ARSB
Function
Removes sulfate groups from chondroitin-4-sulfate (C4S) and regulates its degradation (PubMed:19306108). Involved in the regulation of cell adhesion, cell migration and invasion in colonic epithelium (PubMed:19306108). In the central nervous system, is a regulator of neurite outgrowth and neuronal plasticity, acting through the control of sulfate glycosaminoglycans and neurocan levels (By similarity).
Involvement in disease
Mucopolysaccharidosis 6
MPS6
A form of mucopolysaccharidosis, a group of lysosomal storage diseases characterized by defective degradation of glycosaminoglycans, resulting in their excessive accumulation and secretion. The diseases are progressive and often display a wide spectrum of clinical severity. MPS6 is an autosomal recessive form characterized by intracellular accumulation of dermatan sulfate. Clinical features can include abnormal growth, short stature, stiff joints, skeletal malformations, corneal clouding, hepatosplenomegaly, and cardiac abnormalities.
None
The disease is caused by variants affecting the gene represented in this entry.
Multiple sulfatase deficiency
MSD
A clinically and biochemically heterogeneous disorder caused by the simultaneous impairment of all sulfatases, due to defective post-translational modification and activation. It combines features of individual sulfatase deficiencies such as metachromatic leukodystrophy, mucopolysaccharidosis, chondrodysplasia punctata, hydrocephalus, ichthyosis, neurologic deterioration and developmental delay.
None
The protein represented in this entry is involved in disease pathogenesis. Arylsulfatase B activity is impaired in multiple sulfatase deficiency due to mutations in SUMF1. SUMF1 mutations result in defective post-translational modification of ARSB at residue Cys-91 that is not converted to 3-oxoalanine.
Post-translational modifications
The conversion to 3-oxoalanine (also known as C-formylglycine, FGly), of a serine or cysteine residue in prokaryotes and of a cysteine residue in eukaryotes, is critical for catalytic activity. This post-translational modification is severely defective in multiple sulfatase deficiency (MSD).
Sequence Similarities
Belongs to the sulfatase family.
Cellular localization
- Lysosome
- Cell surface
Alternative names
Arylsulfatase B, ASB, N-acetylgalactosamine-4-sulfatase, G4S, ARSB