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Schema
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Reaction
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Entries
CYP8B1 12-hydroxylates 4CHOL7aOLONE
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authored
[InstanceEdit:350358] Jassal, Bijay, 2008年05月19日
catalystActivity
[CatalystActivity:192125] sterol 12-alpha-hydroxylase activity of CYP8B1 [endoplasmic reticulum membrane]
category
transition
compartment
[Compartment:70101] cytosol
[Compartment:12045] endoplasmic reticulum membrane
created
[InstanceEdit:191989] Jassal, Bijay, 2007年01月26日
crossReference
[DatabaseIdentifier:9907725] RHEA:46753
dbId
192157
displayName
CYP8B1 12-hydroxylates 4CHOL7aOLONE
edited
[InstanceEdit:193475] D'Eustachio, P, 2007年02月17日 19:40:28
eventOf
[Pathway:R-HSA-193368] Synthesis of bile acids and bile salts via 7alpha-hydroxycholesterol - Homo sapiens
followingEvent
[Reaction:R-HSA-192067] 4-cholesten-7alpha, 12alpha-diol-3-one is reduced to 5beta-cholesten-7alpha, 12alpha-diol-3-one - Homo sapiens
input
[SimpleEntity:R-ALL-192136] 4CHOL7aOLONE [endoplasmic reticulum membrane]
[SimpleEntity:R-ALL-70106] H+ [cytosol]
[SimpleEntity:R-ALL-29364] NADPH [cytosol]
[SimpleEntity:R-ALL-29368] O2 [cytosol]
isInDisease
false
isInferred
false
literatureReference
[LiteratureReference:192101] Structure and chromosomal assignment of the sterol 12alpha-hydroxylase gene (CYP8B1) in human and mouse: eukaryotic cytochrome P-450 gene devoid of introns
[LiteratureReference:5602286] Purification and characterization of 7 alpha-hydroxy-4-cholesten-3-one 12 alpha-hydroxylase
maxDepth
1
modified
[InstanceEdit:10603480] Weiser, Joel, 2025年08月27日
name
CYP8B1 12-hydroxylates 4CHOL7aOLONE
7alpha-hydroxycholest-4-en-3-one + O2 + reduced (NADPH--hemoprotein reductase) => 7alpha,12alpha-dihydroxycholest-4-en-3-one + H(+) + H2O + oxidized (NADPH--hemoprotein reductase)
4-Cholesten-7alpha-ol-3-one is 12alpha-hydroxylated to 7-alpha,12-alpha-dihydroxycholest-4-en-3-one
7-alpha-hydroxycholest-4-en-3-one + NADPH + H+ + O2 => 7-alpha,12-alpha-dihydroxycholest-4-en-3-one + NADP+ + H2O
orthologousEvent
[Reaction:R-XTR-192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - Xenopus tropicalis
[Reaction:R-DRE-192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - Danio rerio
[Reaction:R-SSC-192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - Sus scrofa
[Reaction:R-CFA-192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - Canis familiaris
[Reaction:R-RNO-192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - Rattus norvegicus
[Reaction:R-MMU-192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - Mus musculus
output
[SimpleEntity:R-ALL-192195] 4CHOL7a,12aDONE [endoplasmic reticulum membrane]
[SimpleEntity:R-ALL-29356] H2O [cytosol]
[SimpleEntity:R-ALL-29366] NADP+ [cytosol]
precedingEvent
[Reaction:R-HSA-192097] 7alpha-hydroxycholesterol is oxidized and isomerized to 4-cholesten-7alpha-ol-3-one - Homo sapiens
releaseDate
2007年05月15日
reviewStatus
[ReviewStatus:9821382] five stars
reviewed
[InstanceEdit:351775] D'Eustachio, P, 2008年05月28日 08:30:54
revised
[InstanceEdit:5602271] Jassal, Bijay, 2014年06月23日
schemaClass
Reaction
species
[Species:48887] Homo sapiens
stId
R-HSA-192157
summation
[Summation:192122] Sterol 12alpha hydroxylase (CYP8B1), an enzyme associated wi...
updateTrackers
[UpdateTracker:9910998] Update Tracker - [Reaction:192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - v89:[modifyText]
[UpdateTracker:9786297] Update Tracker - [Reaction:192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - v50:[addLiteratureReference, modifyText]
Referrals
(updatedInstance)
[UpdateTracker:9910998] Update Tracker - [Reaction:192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - v89:[modifyText]
[UpdateTracker:9786297] Update Tracker - [Reaction:192157] CYP8B1 12-hydroxylates 4CHOL7aOLONE - v50:[addLiteratureReference, modifyText]
(hasEvent)
[Pathway:R-HSA-193368] Synthesis of bile acids and bile salts via 7alpha-hydroxycholesterol
[Pathway:R-HSA-211994] Sterols are 12-hydroxylated by CYP8B1
(precedingEvent)
[Reaction:R-HSA-192067] 4-cholesten-7alpha, 12alpha-diol-3-one is reduced to 5beta-cholesten-7alpha, 12alpha-diol-3-one
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