FUNCTION: The 3-beta-HSD enzymatic system plays a crucial role in the biosynthesis of all classes of hormonal steroids. HSD VII is active against four 7-alpha-hydroxylated sterols. Does not metabolize several different C(19/21) steroids as substrates. Involved in bile acid synthesis (PubMed:11067870...
FUNCTION: The 3-beta-HSD enzymatic system plays a crucial role in the biosynthesis of all classes of hormonal steroids. HSD VII is active against four 7-alpha-hydroxylated sterols. Does not metabolize several different C(19/21) steroids as substrates. Involved in bile acid synthesis (PubMed:11067870). Plays a key role in cell positioning and movement in lymphoid tissues by mediating degradation of 7-alpha,25-dihydroxycholesterol (7-alpha,25-OHC): 7-alpha,25-OHC acts as a ligand for the G protein-coupled receptor GPR183/EBI2, a chemotactic receptor for a number of lymphoid cells. {ECO:0000250|UniProtKB:Q9EQC1, ECO:0000269|PubMed:11067870}.
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GO - Biological processes (BP):
B cell chemotaxis [GO:0035754]; bile acid biosynthetic process [GO:0006699]...
B cell chemotaxis [GO:0035754]; bile acid biosynthetic process [GO:0006699]
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GO - Molecular function (MF):
3-beta-hydroxy-delta5-steroid dehydrogenase activity [GO:0003854]; cholest-5-ene-3-beta,7-alpha-diol 3-beta-dehydrogenase activity [GO:0047016]; oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor [GO:0016616]...
3-beta-hydroxy-delta5-steroid dehydrogenase activity [GO:0003854]; cholest-5-ene-3-beta,7-alpha-diol 3-beta-dehydrogenase activity [GO:0047016]; oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor [GO:0016616]
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GO - Cellular component (CC):
endoplasmic reticulum membrane [GO:0005789]; integral component of membrane [GO:0016021]; lipid droplet [GO:0005811]...
endoplasmic reticulum membrane [GO:0005789]; integral component of membrane [GO:0016021]; lipid droplet [GO:0005811]
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