. "SEQUENCE 583 AA; 65492 MW; 74746AFA9D21A0A6 CRC64;"^^ . "FUNCTION: Conversion of sulfated steroid precursors to estrogens during pregnancy. CATALYTIC ACTIVITY: 3-beta-hydroxyandrost-5-en-17-one 3-sulfate + H(2)O = 3-beta-hydroxyandrost-5-en-17-one + sulfate. COFACTOR: Binds 1 calcium ion per subunit. SUBUNIT: Homodimer. SUBCELLULAR LOCATION: Endoplasmic reticulum membrane; Multi-pass membrane protein. PTM: 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 (By similarity). DISEASE: Defects in STS are the cause of ichthyosis X-linked (IXL) [MIM:308100]. Ichthyosis X-linked is a keratinization disorder manifesting with mild erythroderma and generalized exfoliation of the skin within a few weeks after birth. Affected boys later develop large, polygonal, dark brown scales, especially on the neck, extremities, trunk, and buttocks. SIMILARITY: Belongs to the sulfatase family. WEB RESOURCE: Name=GeneReviews; URL=\"http://www.ncbi.nlm.nih.gov/sites/GeneTests/lab/gene/STS\"; WEB RESOURCE: Name=Wikipedia; Note=Steroid sulfatase entry; URL=\"http://en.wikipedia.org/wiki/Steroid_sulfatase\"; GENE SYNONYMS:STS ARSC1. COPYRIGHT: Protein annotation is derived from the UniProt Consortium (http://www.uniprot.org/). Distributed under the Creative Commons Attribution-NoDerivs License."^^ . . . . . . "STS_HUMAN"^^ . "ASC"^^ . "3.1.6.2"^^ . "Steryl-sulfate sulfohydrolase"^^ . "Steroid sulfatase"^^ . "Arylsulfatase C"^^ . "STS"^^ . . . "MPLRKMKIPFLLLFFLWEAESHAASRPNIILVMADDLGIGDPGCYGNKTIRTPNIDRLASGGVKLTQHLAASPLCTPSRAAFMTGRYPVRSGMASWSRTGVFLFTASSGGLPTDEITFAKLLKDQGYSTALIGKWHLGMSCHSKTDFCHHPLHHGFNYFYGISLTNLRDCKPGEGSVFTTGFKRLVFLPLQIVGVTLLTLAALNCLGLLHVPLGVFFSLLFLAALILTLFLGFLHYFRPLNCFMMRNYEIIQQPMSYDNLTQRLTVEAAQFIQRNTETPFLLVLSYLHVHTALFSSKDFAGKSQHGVYGDAVEEMDWSVGQILNLLDELRLANDTLIYFTSDQGAHVEEVSSKGEIHGGSNGIYKGGKANNWEGGIRVPGILRWPRVIQAGQKIDEPTSNMDIFPTVAKLAGAPLPEDRIIDGRDLMPLLEGKSQRSDHEFLFHYCNAYLNAVRWHPQNSTSIWKAFFFTPNFNPVGSNGCFATHVCFCFGSYVTHHDPPLLFDISKDPRERNPLTPASEPRFYEILKVMQEAADRHTQTLPEVPDQFSWNNFLWKPWLQLCCPSTGLSCQCDREKQDKRLSR"^^ . "Steryl-sulfatase"^^ .