SUMF1 cDNA Clone – Sulfatase Modifying Factor 1 (Human)

This gene encodes an enzyme that catalyzes the hydrolysis of sulfate esters by oxidizing a cysteine residue in the substrate sulfatase to an active site 3-oxoalanine residue, which is also known as C-alpha-formylglycine. Mutations in this gene cause multiple sulfatase deficiency, a lysosomal storage disorder. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

SUMF1: Using molecular oxygen and an unidentified reducing agent, oxidizes a cysteine residue in the substrate sulfatase to an active site 3-oxoalanine residue, which is also called C(alpha)-formylglycine. Known substrates include GALNS, ARSA, STS and ARSE. Defects in SUMF1 are the cause of multiple sulfatase deficiency (MSD). MSD is 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. Inheritance is autosomal recessive. Belongs to the sulfatase-modifying factor family. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Endoplasmic reticulum; Secreted; Oxidoreductase; Secreted, signal peptide; EC 1.8.99.-

Chromosomal Location of Human Ortholog: 3p26.1

Cellular Component: endoplasmic reticulum lumen

Molecular Function: oxidoreductase activity

Biological Process: glycosphingolipid metabolic process; post-translational protein modification

Disease: Multiple Sulfatase Deficiency