Steroid sulfatase

Available structures
PDBHuman UniProt search: PDBe RCSB
Aliases STS, ARSC, ARSC2, ARSC1, ASC, ES, SSDD, XLI, Steroid sulfatase (microsomal), isozyme S
External IDs HomoloGene: 47918 GeneCards: STS
RNA expression pattern

More reference expression data
Species Human Mouse









RefSeq (mRNA)


RefSeq (protein)


Location (UCSC) Chr X: 7.22 – 7.35 Mb n/a
PubMed search [1] n/a
View/Edit Human

Steroid sulfatase (STS), or steryl-sulfatase, formerly known as arylsulfatase C, is a sulfatase enzyme involved in the metabolism of steroids. It is encoded by the STS gene.[2]


The protein encoded by this gene catalyzes the conversion of sulfated steroid precursors to the free steroid. This includes DHEA sulfate, estrone sulfate, pregnenolone sulfate, and cholesterol sulfate, all to their unconjugated forms (DHEA, estrone, pregnenolone, and cholesterol, respectively).[3][4] The encoded protein is found in the endoplasmic reticulum, where it is present as a homodimer.[2]

Clinical significance

A congenital deficiency in the enzyme is associated with X-linked ichthyosis, a scaly-skin disease affecting roughly 1 in every 2,000 to 6,000 males.[5][6] The excessive skin scaling or hyperkeratosis is caused by a lack of breakdown and thus accumulation of cholesterol sulfate, a steroid that stabilizes cell membranes and adds cohesion, in the outer layers of the skin.[3]

See also


  1. "Human PubMed Reference:".
  2. 1 2 "Entrez Gene: STS steroid sulfatase (microsomal), arylsulfatase C, isozyme S".
  3. 1 2 Mueller JW, Gilligan LC, Idkowiak J, Arlt W, Foster PA (October 2015). "The Regulation of Steroid Action by Sulfation and Desulfation". Endocrine Reviews. 36 (5): 526–63. doi:10.1210/er.2015-1036. PMID 26213785.
  4. Rižner TL (2016). "The Important Roles of Steroid Sulfatase and Sulfotransferases in Gynecological Diseases". Frontiers in Pharmacology. 7: 30. doi:10.3389/fphar.2016.00030. PMID 26924986.
  5. Alperin ES, Shapiro LJ (August 1997). "Characterization of point mutations in patients with X-linked ichthyosis. Effects on the structure and function of the steroid sulfatase protein". The Journal of Biological Chemistry. 272 (33): 20756–63. doi:10.1074/jbc.272.33.20756. PMID 9252398.
  6. Ghosh D (December 2004). "Mutations in X-linked ichthyosis disrupt the active site structure of estrone/DHEA sulfatase". Biochimica et Biophysica Acta. 1739 (1): 1–4. doi:10.1016/j.bbadis.2004.09.003. PMID 15607112.

Further reading

  • Elias PM, Crumrine D, Rassner U, Hachem JP, Menon GK, Man W, Choy MH, Leypoldt L, Feingold KR, Williams ML (February 2004). "Basis for abnormal desquamation and permeability barrier dysfunction in RXLI". The Journal of Investigative Dermatology. 122 (2): 314–9. doi:10.1046/j.1523-1747.2003.22258.x. PMID 15009711. 
  • Basler E, Grompe M, Parenti G, Yates J, Ballabio A (March 1992). "Identification of point mutations in the steroid sulfatase gene of three patients with X-linked ichthyosis". American Journal of Human Genetics. 50 (3): 483–91. PMC 1684279Freely accessible. PMID 1539590. 
  • Shankaran R, Ameen M, Daniel WL, Davidson RG, Chang PL (June 1991). "Characterization of arylsulfatase C isozymes from human liver and placenta". Biochimica et Biophysica Acta. 1078 (2): 251–7. doi:10.1016/0167-4838(91)90566-I. PMID 2065092. 
  • Stein C, Hille A, Seidel J, Rijnbout S, Waheed A, Schmidt B, Geuze H, von Figura K (August 1989). "Cloning and expression of human steroid-sulfatase. Membrane topology, glycosylation, and subcellular distribution in BHK-21 cells". The Journal of Biological Chemistry. 264 (23): 13865–72. PMID 2668275. 
  • Kawano J, Kotani T, Ohtaki S, Minamino N, Matsuo H, Oinuma T, Aikawa E (August 1989). "Characterization of rat and human steroid sulfatases". Biochimica et Biophysica Acta. 997 (3): 199–205. doi:10.1016/0167-4838(89)90187-8. PMID 2765556. 
  • Yen PH, Allen E, Marsh B, Mohandas T, Wang N, Taggart RT, Shapiro LJ (May 1987). "Cloning and expression of steroid sulfatase cDNA and the frequent occurrence of deletions in STS deficiency: implications for X-Y interchange". Cell. 49 (4): 443–54. doi:10.1016/0092-8674(87)90447-8. PMID 3032454. 
  • Conary JT, Lorkowski G, Schmidt B, Pohlmann R, Nagel G, Meyer HE, Krentler C, Cully J, Hasilik A, von Figura K (April 1987). "Genetic heterogeneity of steroid sulfatase deficiency revealed with cDNA for human steroid sulfatase". Biochemical and Biophysical Research Communications. 144 (2): 1010–7. doi:10.1016/S0006-291X(87)80064-5. PMID 3034252. 
  • Ballabio A, Parenti G, Carrozzo R, Coppa G, Felici L, Migliori V, Silengo M, Franceschini P, Andria G (July 1988). "X/Y translocation in a family with X-linked ichthyosis, chondrodysplasia punctata, and mental retardation: DNA analysis reveals deletion of the steroid sulphatase gene and translocation of its Y pseudogene". Clinical Genetics. 34 (1): 31–7. doi:10.1111/j.1399-0004.1988.tb02612.x. PMID 3165728. 
  • Yen PH, Marsh B, Allen E, Tsai SP, Ellison J, Connolly L, Neiswanger K, Shapiro LJ (December 1988). "The human X-linked steroid sulfatase gene and a Y-encoded pseudogene: evidence for an inversion of the Y chromosome during primate evolution". Cell. 55 (6): 1123–35. doi:10.1016/0092-8674(88)90257-7. PMID 3203382. 
  • Chang PL, Varey PA, Rosa NE, Ameen M, Davidson RG (November 1986). "Association of steroid sulfatase with one of the arylsulfatase C isozymes in human fibroblasts". The Journal of Biological Chemistry. 261 (31): 14443–7. PMID 3464600. 
  • Munroe DG, Chang PL (February 1987). "Tissue-specific expression of human arylsulfatase-C isozymes and steroid sulfatase". American Journal of Human Genetics. 40 (2): 102–14. PMC 1684069Freely accessible. PMID 3471087. 
  • Müller CR, Wahlström J, Ropers HH (1982). "Further evidence for the assignment of the steroid sulfatase X-linked ichthyosis locus to the telomer of Xp". Human Genetics. 58 (4): 446. doi:10.1007/bf00282842. PMID 6948769. 
  • Migeon BR, Shapiro LJ, Norum RA, Mohandas T, Axelman J, Dabora RL (October 1982). "Differential expression of steroid sulphatase locus on active and inactive human X chromosome". Nature. 299 (5886): 838–40. doi:10.1038/299838a0. PMID 6957717. 
  • Bonaldo MF, Lennon G, Soares MB (September 1996). "Normalization and subtraction: two approaches to facilitate gene discovery". Genome Research. 6 (9): 791–806. doi:10.1101/gr.6.9.791. PMID 8889548. 
  • Alperin ES, Shapiro LJ (August 1997). "Characterization of point mutations in patients with X-linked ichthyosis. Effects on the structure and function of the steroid sulfatase protein". The Journal of Biological Chemistry. 272 (33): 20756–63. doi:10.1074/jbc.272.33.20756. PMID 9252398. 
  • Sugawara T, Shimizu H, Hoshi N, Fujimoto Y, Nakajima A, Fujimoto S (March 2000). "PCR diagnosis of X-linked ichthyosis: identification of a novel mutation (E560P) of the steroid sulfatase gene". Human Mutation. 15 (3): 296. doi:10.1002/(SICI)1098-1004(200003)15:3<296::AID-HUMU17>3.0.CO;2-#. PMID 10679952. 
  • Oyama N, Satoh M, Iwatsuki K, Kaneko F (June 2000). "Novel point mutations in the steroid sulfatase gene in patients with X-linked ichthyosis: transfection analysis using the mutated genes". The Journal of Investigative Dermatology. 114 (6): 1195–9. doi:10.1046/j.1523-1747.2000.00004.x. PMID 10844566. 
  • Jimenez Vaca AL, Valdes-Flores Mdel R, Rivera-Vega MR, González-Huerta LM, Kofman-Alfaro SH, Cuevas-Covarrubias SA (December 2001). "Deletion pattern of the STS gene in X-linked ichthyosis in a Mexican population". Molecular Medicine. 7 (12): 845–9. PMC 1950010Freely accessible. PMID 11844872. 
  • Hoffmann R, Rot A, Niiyama S, Billich A (December 2001). "Steroid sulfatase in the human hair follicle concentrates in the dermal papilla". The Journal of Investigative Dermatology. 117 (6): 1342–8. doi:10.1046/j.0022-202x.2001.01547.x. PMID 11886493. 
  • Matsuoka R, Yanaihara A, Saito H, Furusawa Y, Toma Y, Shimizu Y, Yanaihara T, Okai T (June 2002). "Regulation of estrogen activity in human endometrium: effect of IL-1beta on steroid sulfatase activity in human endometrial stromal cells". Steroids. 67 (7): 655–9. doi:10.1016/S0039-128X(02)00016-8. PMID 11996939. 
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