Exhibits arylsulfatase activity towards the artificial substrate 4-methylumbelliferyl sulfate (PubMed:7720070, PubMed:9497243). May be essential for the correct composition of cartilage and bone matrix during development (PubMed:7720070). Has no activity toward steroid sulfates (PubMed:7720070)

Golgi apparatus, Golgi stack

Chondrodysplasia punctata 1, X-linked recessive

A clinically and genetically heterogeneous disorder characterized by punctiform calcification of the bones. CDPX1 is a congenital defect of bone and cartilage development characterized by aberrant bone mineralization, severe underdevelopment of nasal cartilage, and distal phalangeal hypoplasia. This disease can also be induced by inhibition with the drug warfarin.

Isomerase that catalyzes the conversion of Delta(8)-sterols to their corresponding Delta(7)-isomers a catalytic step in the postlanosterol biosynthesis of cholesterol Component of the microsomal antiestrogen binding site (AEBS), a multiproteic complex at the ER membrane that consists of an association between EBP and 7-dehydrocholesterol reductase/DHCR7 (PubMed:15175332, PubMed:20615952). This complex is responsible for cholesterol-5,6-epoxide hydrolase (ChEH) activity, which consists in the hyd

Endoplasmic reticulum membraneNucleus envelopeCytoplasmic vesicle

Chondrodysplasia punctata 2, X-linked dominant

A clinically and genetically heterogeneous disorder characterized by punctiform calcification of the bones. The key clinical features of CDPX2 are chondrodysplasia punctata, linear ichthyosis, cataracts and short stature. CDPX2 is a rare disorder of defective cholesterol biosynthesis, biochemically characterized by an increased amount of 8-dehydrocholesterol and cholest-8(9)-en-3-beta-ol in the plasma and tissues.