Pathway candidate — not linked to PFS or PSSD by any record here
Gene summary
A protein-coding gene on chromosome X (steroid conjugation and clearance). Encodes a multi-pass membrane protein that is localized to the endoplasmic reticulum. It belongs to the sulfatase family and hydrolyzes several 3-beta-hydroxysteroid sulfates, which serve as metabolic precursors for estrogens, androgens, and cholesterol.
Source: NCBI Gene, accessed 2026-10-07.
Protein reference (UniProt)
- Protein
Steryl-sulfatase
- Function
Catalyzes the conversion of sulfated steroid precursors, such as dehydroepiandrosterone sulfate (DHEA-S) and estrone sulfate to the free steroid.
- Subcellular location
Cytoplasmic vesicle, secretory vesicle, microneme membrane; Endoplasmic reticulum membrane.
- Associated conditions
Ichthyosis, X-linked (IXL).
Source: UniProtKB/Swiss-Prot P08842, release 2026_03, licensed CC BY 4.0. This is the protein’s normal biology, not evidence about post-drug syndromes; associated conditions are inherited disorders of the gene, not PFS, PSSD or PRSD.
Why its pathway is in the library
Steroid clearance is the exit route for androgens and their metabolites — the pathway at the center of Powers' PFS model (defective glucuronidation/sulfation trapping androgens intracellularly). Gut bacterial enzymes can undo this clearance, linking it to the microbiome thread.
Written for the whole conjugation & clearance family, not for STS specifically.
Mentioned in 0 corpus records
No corpus record names STS directly yet. It is in the library because it sits in a pathway the corpus tracks (Conjugation & clearance).
Also in steroid conjugation and clearance
All 31 genes- UGT2B17Powers
UDP glucuronosyltransferase family 2 member B17
chr 4· Conjugation & clearance· 30 records - UGT2B15Powers
UDP glucuronosyltransferase family 2 member B15
chr 4· Conjugation & clearance· 13 records - AKR1C2Powers
aldo-keto reductase family 1 member C2
chr 10· Steroid synthesis· 12 records - UGT2B7Powers
UDP glucuronosyltransferase family 2 member B7
chr 4· Conjugation & clearance· 11 records - AKR1C3Powers
aldo-keto reductase family 1 member C3
chr 10· Steroid synthesis· 9 records - AKR1C4Powers
aldo-keto reductase family 1 member C4
chr 10· Steroid synthesis· 8 records - AKR1C1Powers
aldo-keto reductase family 1 member C1
chr 10· Steroid synthesis· 7 records - SULT2A1Powers
sulfotransferase family 2A member 1
chr 19· Conjugation & clearance· 7 records
Browse by family on the gene families page.