Endoplasmic reticulum membraneCell projection, axonCell projection, dendrite

Episodic kinesigenic dyskinesia 3

A form of paroxysmal kinesigenic dyskinesia, a neurologic condition characterized by recurrent and brief attacks of abnormal involuntary movements. These attacks can involve dystonic postures, chorea, or athetosis. EKD3 is an autosomal dominant form with incomplete penetrance and onset in late childhood or early adolescence. Symptoms are usually triggered by sudden movement or stress, and resolve in most patients in their early twenties or later.

Plays a role in vesicle-mediated protein trafficking to lysosomal compartments including the endocytic membrane transport and autophagic pathways. Believed to act as a core component of the putative HOPS and CORVET endosomal tethering complexes which are proposed to be involved in the Rab5-to-Rab7 endosome conversion probably implicating MON1A/B, and via binding SNAREs and SNARE complexes to mediate tethering and docking events during SNARE-mediated membrane fusion. The HOPS complex is proposed

Late endosome membraneLysosome membraneEarly endosomeCytoplasmic vesicle, clathrin-coated vesicleCytoplasmic vesicle, autophagosome

Dystonia 30

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT30 is characterized by early onset and predominantly cervical, bulbar, orofacial, and upper limb involvement. Some patients have a more complex phenotype with neurocognitive impairment, including mild intellectual disability or psychiatric manifestations. Loss of ambulation is observed in some cases. DYT30 inheritance is autosomal dominant with incomplete penetrance.

Actin is a highly conserved protein that polymerizes to produce filaments that form cross-linked networks in the cytoplasm of cells (PubMed:25255767, PubMed:29581253). Actin exists in both monomeric (G-actin) and polymeric (F-actin) forms, both forms playing key functions, such as cell motility and contraction (PubMed:29581253). In addition to their role in the cytoplasmic cytoskeleton, G- and F-actin also localize in the nucleus, and regulate gene transcription and motility and repair of damage

Cytoplasm, cytoskeletonNucleus

Dystonia-deafness syndrome 1

An autosomal dominant form of dystonia with juvenile onset, associated with congenital or childhood-onset sensorineural deafness. Dystonia is defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. Some DDS1 patients have dysmorphic features, skeletal anomalies, and/or mild developmental delay with impaired intellectual development.

Transcriptional regulator which is important for the differentiation and maintenance of meso-diencephalic dopaminergic (mdDA) neurons during development (PubMed:15716272, PubMed:17184956). It is crucial for expression of a set of genes such as SLC6A3, SLC18A2, TH and DRD2 which are essential for development of mdDA neurons (By similarity)

CytoplasmNucleus

Intellectual developmental disorder with language impairment and early-onset DOPA-responsive dystonia-parkinsonism

An autosomal dominant disorder characterized by global developmental delay affecting motor, cognitive, and speech domains apparent in early childhood or infancy. Most patients also show movement abnormalities, often hypotonia with later development of dopa-responsive dystonia or parkinsonism. About half of patients develop various types of seizures.

IFN-induced dsRNA-dependent serine/threonine-protein kinase that phosphorylates the alpha subunit of eukaryotic translation initiation factor 2 (EIF2S1/eIF-2-alpha) and plays a key role in the innate immune response to viral infection (PubMed:18835251, PubMed:19189853, PubMed:19507191, PubMed:21072047, PubMed:21123651, PubMed:22381929, PubMed:22948139, PubMed:23229543). Inhibits viral replication via the integrated stress response (ISR): EIF2S1/eIF-2-alpha phosphorylation in response to viral in

CytoplasmNucleusCytoplasm, perinuclear region

Leukoencephalopathy, developmental delay, and episodic neurologic regression syndrome

An autosomal dominant disorder characterized by global developmental delay apparent in early childhood, cognitive impairment, ataxia, poor or absent speech with dysarthria, hypotonia, hypertonia, extrapyramidal signs, tremor, and abnormal involuntary movements. Affected individuals also exhibit neurological regression in the setting of febrile illness or infection. Many patients have seizures. Brain imaging shows diffuse white matter abnormalities with poor myelination.

Component of the nuclear pore complex, a complex required for the trafficking across the nuclear membrane

Nucleus, nuclear pore complexNucleus membrane

Dystonia 37, early-onset, with striatal lesions

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT37 is an autosomal recessive form characterized by the onset of progressive dystonia, dysphagia, and choreoathetosis in the first months or years of life. Affected individuals show delayed motor development and may have impaired intellectual development.

Transcription factor (PubMed:22194193, PubMed:31691806). Binds to specific sequence motif 5'-TAATTA-3' in regulatory elements of target genes, such as histone demethylase KDM5C (PubMed:22194193, PubMed:31691806). Positively modulates transcription of KDM5C (PubMed:31691806). Activates expression of KDM5C synergistically with histone lysine demethylase PHF8 and perhaps in competition with transcription regulator ZNF711; synergy may be related to enrichment of histone H3K4me3 in regulatory element

Nucleus

Lissencephaly, X-linked 2

A classic type lissencephaly associated with abnormal genitalia. Patients have severe congenital or postnatal microcephaly, lissencephaly, agenesis of the corpus callosum, neonatal-onset intractable epilepsy, poor temperature regulation, chronic diarrhea, and ambiguous or underdeveloped genitalia.

DNA-binding transcription regulator that regulates endothelial cell proliferation and G1/S cell-cycle progression. Specifically binds the 5'-[AT]NTNN[GT]GGCA[AGT]-3' core DNA sequence and acts by modulating expression of pRB-E2F cell-cycle target genes, including RRM1. Component of a THAP1/THAP3-HCFC1-OGT complex that is required for the regulation of the transcriptional activity of RRM1. May also have pro-apoptotic activity by potentiating both serum-withdrawal and TNF-induced apoptosis

Nucleus, nucleoplasmNucleus, PML body

Dystonia 6, torsion

A primary torsion dystonia. Dystonia is defined by the presence of sustained involuntary muscle contractions, often leading to abnormal postures. Dystonia type 6 is characterized by onset in early adulthood, cranial or cervical involvement in about half of the cases, and frequent progression to involve multiple body regions.

Tubulin is the major constituent of microtubules, a cylinder consisting of laterally associated linear protofilaments composed of alpha- and beta-tubulin heterodimers. Microtubules grow by the addition of GTP-tubulin dimers to the microtubule end, where a stabilizing cap forms. Below the cap, tubulin dimers are in GDP-bound state, owing to GTPase activity of alpha-tubulin

Cytoplasm, cytoskeleton

Dystonia 4, torsion, autosomal dominant

A form of torsion dystonia, a disease defined by the presence of sustained involuntary muscle contractions, often leading to abnormal postures. 'Torsion' refers to the twisting nature of body movements, often affecting the trunk. DYT4 is characterized by onset in the second to third decade of progressive laryngeal dysphonia followed by the involvement of other muscles, such as the neck or limbs. Some patients develop an ataxic gait.

Plays a role in vesicle-mediated protein trafficking to lysosomal compartments including the endocytic membrane transport and autophagic pathways. Believed to act as a core component of the putative HOPS and CORVET endosomal tethering complexes which are proposed to be involved in the Rab5-to-Rab7 endosome conversion probably implicating MON1A/B, and via binding SNAREs and SNARE complexes to mediate tethering and docking events during SNARE-mediated membrane fusion. The HOPS complex is proposed

EndosomeLate endosome membraneLysosome membraneEarly endosomeCytoplasmic vesicleCytoplasmic vesicle, autophagosomeCytoplasmic vesicle, clathrin-coated vesicle

Leukodystrophy, hypomyelinating, 12

An autosomal recessive neurologic disorder characterized by developmental delay, spasticity, truncal hypotonia, acquired microcephaly, intellectual disability with variable seizure disorder, accompanied by thin corpus callosum, paucity of white matter and delayed myelination.

Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1A gives rise to P and/or Q-type calcium currents. P/Q-type calcium channels belong to the 'high-voltage activated' (HVA) group and are specifically blocked by the spider omega-agatoxin-IVA

Cell membrane

Spinocerebellar ataxia 6

Spinocerebellar ataxia is a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA6 is an autosomal dominant cerebellar ataxia (ADCA), mainly caused by expansion of a CAG repeat in the coding region of CACNA1A. There seems to be a correlation between the repeat number and earlier onset of the disorder.

Scaffold protein component of the PI(3,5)P2 regulatory complex which regulates both the synthesis and turnover of phosphatidylinositol 3,5-bisphosphate (PtdIns(3,5)P2). Pentamerizes into a star-shaped structure and nucleates the assembly of the complex. The pentamer binds a single copy each of PIKFYVE and FIG4 and coordinates both PIKfyve kinase activity and FIG4 phosphatase activity, being required to maintain normal levels of phosphatidylinositol 3-phosphate (PtdIns(3)P) and phosphatidylinosit

Endosome membraneMicrosome membrane

Striatonigral degeneration, childhood-onset

An autosomal recessive neurological disorder characterized by sudden childhood onset of developmental regression. Affected children develop impaired movements with dystonia, progressively become non-ambulatory and non-verbal, and exhibit striatal abnormalities on MRI.

Required for the quantitative accumulation of H/ACA ribonucleoproteins (RNPs), including telomerase, probably through the stabilization of DKC1, from the time of its synthesis until its association with NOP10, NHP2, and NAF1 at the nascent H/ACA RNA

Cytoplasm, cytosolNucleus, nucleoplasm

Dystonia 35, childhood-onset

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT35 is an autosomal recessive form characterized by the onset of a dystonic movement disorder in the first year of life.

The TFIID basal transcription factor complex plays a major role in the initiation of RNA polymerase II (Pol II)-dependent transcription (PubMed:33795473). TFIID recognizes and binds promoters with or without a TATA box via its subunit TBP, a TATA-box-binding protein, and promotes assembly of the pre-initiation complex (PIC) (PubMed:33795473). The TFIID complex consists of TBP and TBP-associated factors (TAFs), including TAF1, TAF2, TAF3, TAF4, TAF5, TAF6, TAF7, TAF8, TAF9, TAF10, TAF11, TAF12 an

Nucleus

Dystonia 3, torsion, X-linked

An X-linked dystonia-parkinsonism disorder. Dystonia is defined by the presence of sustained involuntary muscle contractions, often leading to abnormal postures. DYT3 is characterized by severe progressive torsion dystonia followed by parkinsonism. It has a well-defined pathology of extensive neuronal loss and mosaic gliosis in the striatum (caudate nucleus and putamen) which appears to resemble that in Huntington disease.

May function as a substrate receptor for CUL4-DDB1 E3 ubiquitin-protein ligase complex

MembraneNucleus, nucleolus

Woodhouse-Sakati syndrome

A rare autosomal recessive disorder characterized by hypogonadism, alopecia, diabetes mellitus, intellectual disability, and extrapyramidal syndrome.

Catalyzes the final one or two reductions in tetra-hydrobiopterin biosynthesis to form 5,6,7,8-tetrahydrobiopterin

Cytoplasm

Dystonia, DOPA-responsive, due to sepiapterin reductase deficiency

A form of DOPA-responsive dystonia. In the majority of cases, patients manifest progressive psychomotor retardation, dystonia and spasticity. Cognitive anomalies are also often present. The disease is due to severe dopamine and serotonin deficiencies in the central nervous system caused by a defect in BH4 synthesis. Dystonia is defined by the presence of sustained involuntary muscle contractions, often leading to abnormal postures.

Receptor tyrosine kinase which binds promiscuously transmembrane ephrin-B family ligands residing on adjacent cells, leading to contact-dependent bidirectional signaling into neighboring cells. The signaling pathway downstream of the receptor is referred to as forward signaling while the signaling pathway downstream of the ephrin ligand is referred to as reverse signaling. Together with its cognate ligand/functional ligand EFNB2 it is involved in the regulation of cell adhesion and migration, an

Cell membrane

Lymphatic malformation 7

A form of primary lymphedema, a disease characterized by swelling of body parts due to developmental anomalies and functional defects of the lymphatic system. Patients with lymphedema may suffer from recurrent local infections. LMPHM7 is an autosomal dominant form with variable expressivity. Some individuals present with severe non-immune hydrops fetalis, which may cause perinatal demise or fully resolve after the neonatal period. Others present with no edema and have milder clinical features, such as atrial septal defect or varicose veins as adults.

May regulate the subcellular localization of CIP/WAF1

Nucleus

Positively regulates nitric oxide synthesis in umbilical vein endothelial cells (HUVECs). May be involved in dopamine synthesis. May modify pain sensitivity and persistence. Isoform GCH-1 is the functional enzyme, the potential function of the enzymatically inactive isoforms remains unknown

CytoplasmNucleus

Hyperphenylalaninemia, BH4-deficient, B

A disease characterized by malignant hyperphenylalaninemia due to tetrahydrobiopterin deficiency, and defective neurotransmission due to depletion of the neurotransmitters dopamine and serotonin. The principal symptoms include: psychomotor retardation, tonicity disorders, convulsions, drowsiness, irritability, abnormal movements, hyperthermia, hypersalivation, and difficulty swallowing. Some patients may present a phenotype of intermediate severity between severe hyperphenylalaninemia and mild dystonia. In this intermediate phenotype, there is marked motor delay, but no intellectual disability and only minimal, if any, hyperphenylalaninemia.

Aminopeptidase which catalyzes the hydrolysis of amino acid residues from the N-terminus of peptide or protein substrates

Nucleus, nucleolusCytoplasm

Dystonia 31

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT31 is an autosomal recessive, progressive form with onset from childhood to young adulthood. Involuntary muscle twisting movements and postural abnormalities affect the upper and lower limbs, neck, face, and trunk. Some patients may have orofacial dyskinesia resulting in articulation and swallowing difficulties.

Component of the sarcoglycan complex, a subcomplex of the dystrophin-glycoprotein complex which forms a link between the F-actin cytoskeleton and the extracellular matrix

Cell membrane, sarcolemmaCytoplasm, cytoskeletonCell projection, dendriteGolgi apparatus

Dystonia 11, myoclonic

A myoclonic dystonia. Dystonia is defined by the presence of sustained involuntary muscle contractions, often leading to abnormal postures. DYT11 is characterized by involuntary lightning jerks and dystonic movements and postures alleviated by alcohol. Inheritance is autosomal dominant. The age of onset, pattern of body involvement, presence of myoclonus and response to alcohol are all variable.

This is the catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of sodium and potassium ions across the plasma membrane. This action creates the electrochemical gradient of sodium and potassium ions, providing the energy for active transport of various nutrients

Cell membrane

Dystonia 12

An autosomal dominant dystonia-parkinsonism disorder. Dystonia is defined by the presence of sustained involuntary muscle contractions, often leading to abnormal postures. DYT12 patients develop dystonia and parkinsonism between 15 and 45 years of age. The disease is characterized by an unusually rapid evolution of signs and symptoms. The sudden onset of symptoms over hours to a few weeks, often associated with physical or emotional stress, suggests a trigger initiating a nervous system insult resulting in permanent neurologic disability.

Voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes, primarily in the brain and the central nervous system, but also in the kidney (PubMed:19903818, PubMed:8845167). Contributes to the regulation of the membrane potential and nerve signaling, and prevents neuronal hyperexcitability (PubMed:17156368). Forms tetrameric potassium-selective channels through which potassium ions pass in accordance with their electrochemical gradient. The channel alte

Cell membraneMembraneCell projection, axonCytoplasmic vesiclePerikaryonEndoplasmic reticulumCell projection, dendriteCell junctionSynapsePresynaptic cell membranePresynapse

Episodic ataxia 1

An autosomal dominant disorder characterized by brief episodes of ataxia and dysarthria. Neurological examination during and between the attacks demonstrates spontaneous, repetitive discharges in the distal musculature (myokymia) that arise from peripheral nerve. Nystagmus is absent.

Protein with chaperone functions important for the control of protein folding, processing, stability and localization as well as for the reduction of misfolded protein aggregates. Involved in the regulation of synaptic vesicle recycling, controls STON2 protein stability in collaboration with the COP9 signalosome complex (CSN). In the nucleus, may link the cytoskeleton with the nuclear envelope, this mechanism seems to be crucial for the control of nuclear polarity, cell movement and, specificall

Endoplasmic reticulum lumenNucleus membraneCell projection, growth coneCytoplasmic vesicle membraneCytoplasmic vesicle, secretory vesicleCytoplasmic vesicle, secretory vesicle, synaptic vesicleCytoplasm, cytoskeleton

Dystonia 1, torsion, autosomal dominant

A primary torsion dystonia, and the most common and severe form. Dystonia is defined by the presence of sustained involuntary muscle contractions, often leading to abnormal postures. Dystonia type 1 is characterized by involuntary, repetitive, sustained muscle contractions or postures involving one or more sites of the body, in the absence of other neurological symptoms. Typically, symptoms develop first in an arm or leg in middle to late childhood and progress in approximately 30% of patients to other body regions (generalized dystonia) within about five years. 'Torsion' refers to the twisting nature of body movements observed in DYT1, often affecting the trunk. Distribution and severity of symptoms vary widely between affected individuals, ranging from mild focal dystonia to severe generalized dystonia, even within families.

Functions as a chaperone protein (PubMed:18287538, PubMed:9396746). Is one of the most abundant endoplasmic reticulum (ER) proteins (PubMed:18287538, PubMed:9396746). Plays a role in the export of secreted proteins in the ER, the recognition of abnormally folded protein and their targeting to the ER associated-degradation (ERAD) (PubMed:18287538, PubMed:9396746). Also serves as a cargo receptor for the export of transmembrane proteins (By similarity). Plays a role in the assembly of the mitochon

Endoplasmic reticulum membraneEndoplasmic reticulum-Golgi intermediate compartment membrane

Deafness, dystonia, and cerebral hypomyelination

An X-linked recessive syndrome characterized by sensorineural deafness, intellectual disability, dysmorphic facial features, dystonia, pyramidal signs, almost no psychomotor development, and hypomyelination on brain imaging.

Collagen VI acts as a cell-binding protein

Secreted, extracellular space, extracellular matrix

Bethlem myopathy 1C

A form of Bethlem myopathy, a slowly progressive muscular dystrophy characterized by joint contractures, most frequently affecting the elbows and ankles, and muscle weakness and wasting involving the proximal and extensor muscles more than the distal and flexor ones. The clinical onset more often occurs in childhood or adulthood, but it can be prenatal with decreased fetal movements or neonatal with hypotonia. The hallmark of Bethlem myopathy is long finger flexion contractures. BTHLM1C inheritance is autosomal dominant.

Plays a role in signal transduction by regulating the intracellular concentration of cyclic nucleotides (PubMed:10373451, PubMed:10393245, PubMed:16330539, PubMed:17389385, PubMed:27058447). Can hydrolyze both cAMP and cGMP, but has higher affinity for cAMP and is more efficient with cAMP as substrate (PubMed:10373451, PubMed:10393245, PubMed:17389385, PubMed:27058447). May play a critical role in regulating cAMP and cGMP levels in the striatum, a region of the brain that contributes to the cont

Cytoplasm, cytosol

Dyskinesia, limb and orofacial, infantile-onset

An autosomal recessive, early-onset hyperkinetic movement disorder characterized by axial hypotonia, dyskinesia of the limbs and trunk, orofacial dyskinesia, drooling, and dysarthria. The severity of the hyperkinesis is variable.

Dopamine receptor whose activity is mediated by G proteins which inhibit adenylyl cyclase (PubMed:21645528). Positively regulates postnatal regression of retinal hyaloid vessels via suppression of VEGFR2/KDR activity, downstream of OPN5 (By similarity)

Cell membraneGolgi apparatus membrane

Serine/threonine protein kinase which activates checkpoint signaling upon double strand breaks (DSBs), apoptosis and genotoxic stresses such as ionizing ultraviolet A light (UVA), thereby acting as a DNA damage sensor (PubMed:10550055, PubMed:10839545, PubMed:10910365, PubMed:12556884, PubMed:14871926, PubMed:15064416, PubMed:15448695, PubMed:15456891, PubMed:15790808, PubMed:15916964, PubMed:17923702, PubMed:21757780, PubMed:24534091, PubMed:35076389, PubMed:9733514). Recognizes the substrate c

NucleusCytoplasmic vesicleCytoplasm, cytoskeleton, microtubule organizing center, centrosomePeroxisome matrix

Ataxia telangiectasia

A rare recessive disorder characterized by progressive cerebellar ataxia, dilation of the blood vessels in the conjunctiva and eyeballs, immunodeficiency, growth retardation and sexual immaturity. Patients have a strong predisposition to cancer; about 30% of patients develop tumors, particularly lymphomas and leukemias. Cells from affected individuals are highly sensitive to damage by ionizing radiation and resistant to inhibition of DNA synthesis following irradiation.

Histone methyltransferase that catalyzes methyl group transfer from S-adenosyl-L-methionine to the epsilon-amino group of 'Lys-4' of histone H3 (H3K4) via a non-processive mechanism. Part of chromatin remodeling machinery predominantly forms H3K4me1 and H3K4me2 methylation marks at active chromatin sites where transcription and DNA repair take place (PubMed:17707229, PubMed:25561738). Likely plays a redundant role with KMT2C in enriching H3K4me1 marks on primed and active enhancer elements (PubM

Nucleus

Dystonia 28, childhood-onset

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT28 is an autosomal dominant, progressive form characterized by onset in the first decade of life and variable severity. Dystonia begins focally in the lower limbs, resulting in gait difficulties, with later progression to other body regions, including the upper limbs, neck, and orofacial region.

Plays a key role in the repair of DNA damage, functioning as part of both the non-homologous end-joining (NHEJ) and base excision repair (BER) pathways (PubMed:10446192, PubMed:10446193, PubMed:15385968, PubMed:20852255, PubMed:28453785). Through its two catalytic activities, PNK ensures that DNA termini are compatible with extension and ligation by either removing 3'-phosphates from, or by phosphorylating 5'-hydroxyl groups on, the ribose sugar of the DNA backbone (PubMed:10446192, PubMed:10446

NucleusChromosome

Microcephaly, seizures, and developmental delay

An autosomal recessive neurodevelopmental disorder characterized by infantile-onset seizures, microcephaly, severe intellectual disability and delayed motor milestones with absent speech or only achieving a few words. Most patients also have behavioral problems with hyperactivity. Microcephaly is progressive and without neuronal migration or structural abnormalities, consistent with primary microcephaly.

Small conductance calcium-activated potassium channel that mediates the voltage-independent transmembrane transfer of potassium across the cell membrane through a constitutive interaction with calmodulin which binds the intracellular calcium allowing its opening (PubMed:10991935, PubMed:33242881, PubMed:9287325). The current is characterized by a voltage-independent activation, an intracellular calcium concentration increase-dependent activation and a single-channel conductance of about 3 picosi

MembraneCytoplasm, myofibril, sarcomere, Z line

Dystonia 34, myoclonic

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT34 is an autosomal dominant form characterized by childhood-onset dystonia predominantly affecting hands and neck, with a fast tremor with superimposed myoclonus and, in some individuals, subtle cerebellar signs.

Substrate-adapter for CUL3-RING ubiquitin ligase complexes which mediates the ubiquitination and subsequent proteasomal degradation of TCHP, a protein involved in ciliogenesis down-regulation. Thereby, positively regulates ciliogenesis, playing a crucial role in the initial steps of axoneme extension (PubMed:25270598). May also play a role in endoplasmic reticulum calcium ion homeostasis (PubMed:25983243)

Cytoplasm

Dystonia 26, myoclonic

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT26 is an autosomal dominant, progressive disorder characterized by a combination of non-epileptic myoclonic jerks and dystonia. Affected individuals manifest myoclonic jerks in the upper limbs during the first or second decade of life, and later develop dystonia with predominant involvement of the craniocervical regions and sometimes the trunk and/or lower limbs.

Electrogenic antiporter that exchanges one cationic monoamine with two intravesicular protons across the membrane of secretory and synaptic vesicles. Uses the electrochemical proton gradient established by the V-type proton-pump ATPase to accumulate high concentrations of monoamines inside the vesicles prior to their release via exocytosis. Transports a variety of catecholamines such as dopamine, adrenaline and noradrenaline, histamine, and indolamines such as serotonin (PubMed:23363473, PubMed:

Cytoplasmic vesicle, secretory vesicle, synaptic vesicle membraneCytoplasmic vesicle, secretory vesicle membraneCell projection, axonCell projection, dendrite

Parkinsonism-dystonia 2, infantile-onset

An autosomal recessive disorder characterized by infantile onset of abnormal movements, including parkinsonism, dystonia, and poor fine motor skills, as well as autonomic dysfunction, including abnormal sweating, cold extremities, and poor sleep. Some patients have variable degrees of developmental delay.

Activates EIF2AK2/PKR in the absence of double-stranded RNA (dsRNA), leading to phosphorylation of EIF2S1/EFI2-alpha and inhibition of translation and induction of apoptosis. Required for siRNA production by DICER1 and for subsequent siRNA-mediated post-transcriptional gene silencing. Does not seem to be required for processing of pre-miRNA to miRNA by DICER1. Promotes UBC9-p53/TP53 association and sumoylation and phosphorylation of p53/TP53 at 'Lys-386' at 'Ser-392' respectively and enhances it

Cytoplasm, perinuclear regionCytoplasm

Dystonia 16

An early-onset dystonia-parkinsonism disorder. Dystonia is defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT16 patients have progressive, generalized dystonia with axial muscle involvement, oro-mandibular (sardonic smile) and laryngeal dystonia and, in some cases, parkinsonian features.

Calcium-binding protein that may play a role in the regulation of voltage-dependent calcium channels (PubMed:28398555). May also play a role in cyclic-nucleotide-mediated signaling through the regulation of adenylate and guanylate cyclases (By similarity)

Cytoplasm, cytosolMembrane

Dystonia 2, torsion, autosomal recessive

A form of torsion dystonia, a disease defined by the presence of sustained involuntary muscle contractions, often leading to abnormal postures. 'Torsion' refers to the twisting nature of body movements, often affecting the trunk. DYT2 is a slowly progressive form that first affects distal limbs and later involves the neck, orofacial, and craniocervical regions.

Guanine nucleotide-binding protein (G protein) involved as transducer in olfactory signal transduction controlled by G protein-coupled receptors (GPCRs) (By similarity). Contains the guanine nucleotide binding site and alternates between an active, GTP-bound state and an inactive, GDP-bound state (By similarity). Signaling by an activated GPCR promotes GDP release and GTP binding (By similarity). The alpha subunit has a low GTPase activity that converts bound GTP to GDP, thereby terminating the

Cell membrane

Dystonia 25

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT25 is an autosomal dominant neurologic disorder characterized by adult onset of focal dystonia, usually involving the neck. The dystonia most often progresses to involve other regions, particularly the face and laryngeal muscles, and less commonly the trunk and limbs.

Catalyzes the NADPH-dependent reduction of trans-2-enoyl thioesters in mitochondrial fatty acid synthesis (fatty acid synthesis type II). Fatty acid chain elongation in mitochondria uses acyl carrier protein (ACP) as an acyl group carrier, but the enzyme accepts both ACP and CoA thioesters as substrates in vitro. Displays a preference for medium-chain over short- and long-chain substrates (PubMed:12654921, PubMed:18479707, PubMed:27817865). May provide the octanoyl chain used for lipoic acid bio

MitochondrionCytoplasmNucleus

Dystonia, childhood-onset, with optic atrophy and basal ganglia abnormalities

An autosomal recessive neurologic disorder characterized by childhood-onset dystonia, basal ganglia degeneration and optic atrophy with decreased visual acuity. Dystonia is defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYTOABG severity is variable, and some patients lose independent ambulation.

Catalyzes the attachment of tryptophan to tRNA(Trp) in a two-step reaction: tryptophan is first activated by ATP to form Trp-AMP and then transferred to the acceptor end of tRNA(Trp)

Mitochondrion matrixMitochondrion

Neurodevelopmental disorder, mitochondrial, with abnormal movements and lactic acidosis, with or without seizures

An autosomal recessive, mitochondrial disorder with a broad phenotypic spectrum ranging from severe neonatal lactic acidosis, encephalomyopathy and early death to an attenuated course with milder manifestations. Clinical features include delayed psychomotor development, intellectual disability, hypotonia, dystonia, ataxia, and spasticity. Severe combined respiratory chain deficiency may be found in severely affected individuals.

As a component of the outer core of AMPAR complex, may be involved in synaptic transmission in the central nervous system. In hippocampal neurons, in presynaptic terminals, plays an important role in the final steps of neurotransmitter release, possibly by regulating Ca(2+)-sensing. In the cerebellum, may inhibit SNARE complex formation and down-regulate short-term facilitation

Cell membranePresynaptic cell membraneSynapseCell projection, axonCytoplasmic vesicle, secretory vesicle, synaptic vesicle membranePostsynaptic density membraneCell projection, dendritic spine

Episodic kinesigenic dyskinesia 1

An autosomal dominant form of paroxysmal kinesigenic dyskinesia, a neurologic condition characterized by recurrent and brief attacks of abnormal involuntary movements, triggered by sudden voluntary movement. These attacks usually have onset during childhood or early adulthood and can involve dystonic postures, chorea, or athetosis.

Mediates sodium- and chloride-dependent transport of dopamine (PubMed:10375632, PubMed:11093780, PubMed:1406597, PubMed:15505207, PubMed:19478460, PubMed:39112701, PubMed:39112703, PubMed:39112705, PubMed:8302271). Also mediates sodium- and chloride-dependent transport of norepinephrine (also known as noradrenaline) (By similarity). Regulator of light-dependent retinal hyaloid vessel regression, downstream of OPN5 signaling (By similarity)

Cell membraneCell projection, neuron projectionCell projection, axon

Parkinsonism-dystonia 1, infantile-onset

An autosomal recessive neurodegenerative disorder characterized by infantile onset of parkinsonism and dystonia. Other neurologic features include global developmental delay, bradykinesia and pyramidal tract signs.

Has calcium-dependent phospholipid scramblase activity; scrambles phosphatidylcholine and galactosylceramide (By similarity). Seems to act as potassium channel regulator and may inhibit pain signaling; can facilitate KCNT1/Slack channel activity by promoting its full single-channel conductance at very low sodium concentrations and by increasing its sodium sensitivity (By similarity). Does not exhibit calcium-activated chloride channel (CaCC) activity (PubMed:21984732)

Cell membrane

Dystonia 24

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT24 is an autosomal dominant focal dystonia affecting the neck, laryngeal muscles, and muscles of the upper limbs.

May be responsible for potassium buffering action of glial cells in the brain (By similarity). Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it (PubMed:8995301). Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages (PubMed:8995301). The inward rectification is mainly d

MembraneBasolateral cell membrane

Seizures, sensorineural deafness, ataxia, impaired intellectual development, and electrolyte imbalance

A complex disorder characterized by generalized seizures with onset in infancy, delayed psychomotor development, ataxia, sensorineural hearing loss, hypokalemia, metabolic alkalosis, and hypomagnesemia.

Facilitative glucose transporter, which is responsible for constitutive or basal glucose uptake (PubMed:10227690, PubMed:10954735, PubMed:18245775, PubMed:19449892, PubMed:25982116, PubMed:27078104, PubMed:32860739). Has a very broad substrate specificity; can transport a wide range of aldoses including both pentoses and hexoses (PubMed:18245775, PubMed:19449892). Most important energy carrier of the brain: present at the blood-brain barrier and assures the energy-independent, facilitative trans

Cell membraneMelanosomePhotoreceptor inner segment

GLUT1 deficiency syndrome 1

A neurologic disorder showing wide phenotypic variability. The most severe 'classic' phenotype comprises infantile-onset epileptic encephalopathy associated with delayed development, acquired microcephaly, motor incoordination, and spasticity. Onset of seizures, usually characterized by apneic episodes, staring spells, and episodic eye movements, occurs within the first 4 months of life. Other paroxysmal findings include intermittent ataxia, confusion, lethargy, sleep disturbance, and headache. Varying degrees of cognitive impairment can occur, ranging from learning disabilities to severe intellectual disability.

Probable thioesterase that may play a role in cellular detoxification processes; it likely acts on a yet-unknown alpha-hydroxythioester substrate (Probable). In vitro, it is able to catalyze the hydrolysis of S-D-lactoyl-glutathione to form glutathione and D-lactic acid at very low rate, though this reaction is not physiologically relevant in vivo (PubMed:21487022)

Cell membraneMitochondrionCytoplasmGolgi apparatusEndoplasmic reticulum

Paroxysmal non-kinesigenic dyskinesia 1

An autosomal dominant movement disorder characterized by attacks of dystonia, chorea, and athetosis. The attacks of involuntary movements are brought on by stress, alcohol, fatigue or caffeine, and generally last between a few seconds and four hours or longer. The attacks may begin in one limb and spread throughout the body, including the face.

Required for synaptic transmission regulation (PubMed:33539324). It probably controls the recruitment of voltage-gated calcium channels to the presynaptic membrane, and modulates neurotransmitter release

CytoplasmMitochondrion

Dystonia 22, adult-onset

A form of dystonia, a disorder defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYT22AO is an autosomal recessive form characterized by focal dystonia or tremor and mild cognitive impairment.

Catalyzes the conversion of inosine 5'-phosphate (IMP) to xanthosine 5'-phosphate (XMP), the first committed and rate-limiting step in the de novo synthesis of guanine nucleotides, and therefore plays an important role in the regulation of cell growth (PubMed:7763314, PubMed:7903306). Could also have a single-stranded nucleic acid-binding activity and could play a role in RNA and/or DNA metabolism (PubMed:14766016). It may also have a role in the development of malignancy and the growth progress

CytoplasmNucleusCytoplasm, cytosol