Nucleus envelopePresynapseCell projection, axonPerikaryonCell projection, dendriteCytoplasmic vesicle, secretory vesicle, synaptic vesicle

Kohlschuetter-Toenz syndrome

An autosomal recessive disorder characterized by severe global developmental delay, early-onset intractable seizures, spasticity, and amelogenesis imperfecta affecting both primary and secondary teeth and causing yellow or brown discoloration of the teeth. Although the phenotype is consistent, there is variability. Intellectual disability is related to the severity of seizures, and the disorder can thus be considered an epileptic encephalopathy. Some infants show normal development until seizure onset, whereas others are delayed from birth. The most severely affected individuals have profound intellectual disability, never acquire speech, and become bedridden early in life.

High-affinity sodium/citrate cotransporter that mediates the entry of citrate into cells, which is a critical participant of biochemical pathways (PubMed:12445824, PubMed:12826022, PubMed:26324167, PubMed:26384929, PubMed:30054523, PubMed:33597751, PubMed:39622972). May function in various metabolic processes in which citrate has a critical role such as energy production (Krebs cycle), fatty acid synthesis, cholesterol synthesis, glycolysis, and gluconeogenesis (PubMed:12826022). Transports citr

Cell membrane

Developmental and epileptic encephalopathy 25, with amelogenesis imperfecta

An autosomal recessive disease characterized by subclinical seizures appearing in the first days of life, evolving to severe epileptic disease. Affected individuals have profound or severe delayed development with lack of speech, and most patients do not acquire the ability to sit. Additional variable features include axial hypotonia, peripheral hypertonia, and abnormal involuntary movements such as dystonia and choreoathetosis. Dental abnormalities, including delayed eruption, hypodontia, tooth hypoplasia, yellow discoloration, thin enamel, and enamel chipping are observed in most patients.