Oxysterols derived from cholesterol (Homo sapiens)

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Peroxisomal side-chain shortening24S- and 25-Hydroxylase pathway7α-Hydroxylase pathway:neutral/classical pathwayof bile acid biosynthesis25-hydroxylase pathway5, 115385, 351751410525555105516, 21, 28, 451415, 21, 50, 541014325413820, 51Blood-Brain-Barrier NPC1CD4+ Th17 cellsBased on Fig. 1[PMID:31698146]Reduction and oxidation (presumably by AKR1D1 and AKR1C4)may precede before or after 24-hydroxylation.HSDBSLOS419, 2756, 63CYP8B1ACOT17α,12α,(25R)26-TriH-5β-CODDABAATEBI2histamineAMACR3α,7α,12α−tri-H-5β-cholestan-(25R)26-oic acidCYP27A17α,12α−diHCO7a-Hydroxy-3,24-bisoxocholest-4-en-(25R)26-oyl-CoAHSD3B7CYP3A47a-Hydroxy-3-oxochol-4-en-24-oyl-CoA7-oxo-C and7beta-HC pathwaysCholesterolDBPINSIG7a-Hydroxy-3-oxocholest-4,24(E)-dien-26-oyl-CoAEBI2BACS (SLC27A5)AKR1C47α,25-diHCOVLCS (SLC27A2)D8D7I7a-Hydroxy-3-oxochol-4-en-24-oic acidCYP8B1AKR1C424S-HCLBPEstrogen receptor alphaCyp7B1SCPx (SCP2)7α(25S)26-diHC5β-CO-3α,7α,12α−(25R)26-tetrolAKR1D13β,7α-diHCA7a,24S-Dihydroxy-3-oxocholest-4-en-(25R)26-oic acid7α,25-diHCROR-γt ACOT7a,24S-Dihydroxy-3-oxocholest-4-en-(25R)26-oyl CoACYP3A4PXRCYP27A17-beta, (25R)26-diHCDHCR7LXR-alphaHSD3B77a,24R-Dihydroxy-3-oxocholest-4-en-(25R)26-oyl-CoA7a-Hydroxy-3-oxocholest-4-en-(25S)26-oyl-CoAIL-17A7a-Hydroxy-3-oxocholest-4-en-(25R)26-oyl-CoA7a-Hydroxy-3-oxochol-4-en-24-oyl-glycine7a-Hydroxy-3-oxochol-4-en-24-oyl-taurineAKR1D1ACOX27α−HCOCyp3A4HSD3B75, 875996161105,6-alpha-Epoxycholesterol55359Cholestane-3-beta,5-alpha, 6-beta-triol7-beta-HC7-alpha-HC25-HC6, 40, 42, 467-alpha,25-diHC(25R)26-HC20, 517α,26-diHC5, 5310105, 12, 23, 26, 335, 33, 553, 5, 33, 39, 49...55, 30, 47, 60Cyp27A15, 31, 34Cyp27A1Cyp7A131, 345Cyp27A1Cyp7B15, 31, 34CH25H5Cyp46A159ChEH109IL-17BIL-17CIL-17DIL-17EIL-17F14Estrogen receptor beta14LXR-betaCTX1, 2, 27SPG519, 27NP Type B13NP type A137α−HCO557-alpha-HC55, 357α(25S)26-diHCO57α,12α−diH-5β-CO5β-CO-3α,7α,12α−triolCyp27A15, 31, 343β-HCA5, 335Cyp27A15, 31, 3457α(25R)26−diHCO7α-H-3-oxoC-4-en-(25R)26-oic acid5555CYP27A1CYP27A1557α, 12α,(25R)26−triHCO555557α,12α,-H-3-oxoC-4-en-(25R)26-oic acid5CYP8B1557α,12α-diH-3-oxo-5β-CO-(25R)26-oic acid555AKR1D1CYP27A15Based on Fig. 1[PMID:31698146]CYP8B17a,12a,25-TriH-cholest-4-en-3-one7a,25-DiH-cholest-4-en-3-one7a,25-DiH-3-oxocholest-4-en-26-oic acid627a,12a-DiH-3-oxochol-4-en-24-oic acid7a,12a,25-TriH-cholest-4-en-3,24-dioneCholic acid7a,12a,24,25-TetraH-cholest-4-en-3-one97a,24S-DiHCOHSD3B7CYP39A17a,24S-diH,3O-CA9CYP27A152, 627a,24S-DiHC365, 49555, 8555, 4155, 415, 525, 52AKR1C441Based on Fig. 2[PMID:31698146]52LXR-alphaLXR-beta24S-HC16, 28, 4516, 28, 45EBI2327α-H-3-oxoC-4-en-(25R)26-oic acid55555555, 18, 445555Based on Fig. 3[PMID:31698146]5AMACRD22, 43CBAS6595, 18, 44ACOT257, 58ACOT4ACOT658ACOT7ACOT8ACOT9ACOT11ACOT12ACOT13ACOT7LACOT15DBPD24LKDMN48FHCA29BACS (SLC27A5)VLCS (SLC27A2)99


The Oxysterol group of compounds are oxygenated derivatives of cholesterol or its sterol precursors, e.g. 7-dehydrocholesterol (7-DHC) or desmosterol. There are three mechanisms leading to the formation of oxysterols:

1. Enzymatically (first steps of sterol metabolism, being intermediates for the formation of steroid hormones, bile acids and 1,25-dihydroxyvitamin D3). 2. Non-enzymatically by encountering reactive oxygen species (ROS), providing a second pool of metabolites (this pool also includes oxidized cholesterol molecules taken in from diet), see WP5064. 3. Generation by the gut microflora and uptake through the enterohepatic circulation.

Previously oxysterols where though to be inactive metabolic intermediates, however recent findings have established that these metabolites are involved in cholesterol homoeostasis, can be ligands to nuclear and G protein-coupled receptors and biomarkers of diseases (for example Niemann-Pick disease).

This pathway drawing was inspired by Figure 3 of the review article by Griffiths et al. (2016) [1], and has been extended with immune system, receptor agonists, steroidal alkaloid and biomarker information from the same paper. This pathway has been updated with Figure 1 from Griffiths et al (2020) [2] (green boxes), Figure 2 (yellow box) and Figure 3 (blue box).

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121824view07:02, 7 March 2022EgonwLipidMaps ID seems to have been replaced.
120921view12:13, 31 January 2022Conroy lipidscorrected ID for 7a,12a-diHCO. Previous ID was for 7a-HCO
120411view09:29, 30 November 2021Fehrhartboxed pathway node
116235view14:54, 21 April 2021DeSlLast updates to LIPIDMAPS IDs
116234view14:49, 21 April 2021DeSlAdded more LIPIDMAPS IDs
116233view14:40, 21 April 2021DeSlStarted adding LIPIDMAPS IDs again, without UTF-8 encoding issues
116228view14:32, 21 April 2021DeSlReverted to version '10:06, 31 March 2021' by DeSl
116222view09:15, 21 April 2021Conroy lipidsupdated IDs to lipidmaps identifiers from inchikey- inchikey was not giving any cross refs to other DBs
116029view10:06, 31 March 2021DeSlSmall layout change
115605view12:23, 1 March 2021DeSlConnected unconnected line to INSIG
115603view12:20, 1 March 2021DeSl
115586view10:34, 1 March 2021DeSlAdded WP5064 linkout for more details on Fig.4
115571view05:58, 27 February 2021EgonwRemoved a few more InChIKeys with their respective PubChem CIDs
115570view05:52, 27 February 2021EgonwRemoved a number of InChIKeys with their respective PubChem CIDs
115566view18:33, 26 February 2021DeSlOntology Term : 'alpha-methylacyl-CoA racemase deficiency' added !
115565view18:32, 26 February 2021DeSlOntology Term : 'congenital bile acid synthesis defect 6' added !
115564view18:32, 26 February 2021DeSlOntology Term : 'congenital bile acid synthesis defect' added !
115563view18:31, 26 February 2021DeSlOntology Term : 'D-bifunctional protein deficiency' added !
115562view18:29, 26 February 2021DeSlOntology Term : 'familial hypercholanemia pathway' added !
115561view18:28, 26 February 2021DeSl
115560view18:26, 26 February 2021DeSlAdded other missing proteins from Fig.3
115559view18:16, 26 February 2021DeSlAdded diseases for DBP, ACPx and BAAT
115558view18:07, 26 February 2021DeSlAdded BAAT + refs
115557view17:47, 26 February 2021DeSlAdded ACOT
115556view16:41, 26 February 2021DeSlAdded DBP
115555view16:33, 26 February 2021DeSlAdded ACOX2 and accompanying IEM
115552view16:23, 26 February 2021DeSlAdded AMACR protein + disease
115548view15:49, 26 February 2021DeSlAdded first proteins including refs.
115547view15:35, 26 February 2021DeSlConnected last metabolites from Fig.3
115546view15:31, 26 February 2021DeSlAdded metabolites from Fig.3
115536view11:09, 26 February 2021DeSlAdded more refs for bidning to LXR, INSIGa nd estrogen receptors.
115535view10:44, 26 February 2021DeSlAdded last lit. refs for Fig.2
115532view10:28, 26 February 2021DeSlAdded BBB-crossover for 24S-HC
115531view10:22, 26 February 2021DeSlAdded binding of 24S-HC as ligand
115504view14:48, 24 February 2021DeSlAnnotated last missing protein (D8D71), added additional info in comments.
115503view14:44, 24 February 2021DeSlAnnotated 2 more metabolites for Fig.1
115502view14:40, 24 February 2021DeSlAdded Fig. 2 to description
115501view14:39, 24 February 2021DeSlAdded visualization for Fig.2 (yellow)
115500view14:35, 24 February 2021DeSlAdded proteins for Fig.2, righthand part
115499view13:59, 24 February 2021DeSlAdded second part of Fig.2 (metabolites only)
115497view13:50, 24 February 2021DeSlAdded first nodes of Fig.2
115481view10:30, 23 February 2021DeSlOntology Term : 'classic metabolic pathway' added !
115480view10:29, 23 February 2021DeSlUpdate description
115479view10:28, 23 February 2021DeSlConnected unconnected line, small visuale update for CYP8B1
115478view10:25, 23 February 2021DeSlRemoved lone interaction at bottom for better visualisation
115477view10:22, 23 February 2021DeSlAdded last interactions for Fig. 1
115473view13:07, 22 February 2021DeSlAdded 4th row of fig.1
115472view12:54, 22 February 2021DeSlLayout changes to fit Fig. 1, added first 3 rows now.
115469view10:45, 22 February 2021DeSlAdded 3 additional steps from left to right, bottom conversion
115468view10:23, 22 February 2021DeSlStarted adding details Fig.1 lefthand side interactions, top to bottom

External references


View all...
NameTypeDatabase referenceComment
(25R)26-HCMetaboliteQ15634124 (Wikidata)
  • "AKA (25R)26-hydroxycholesterol; Named with systematic nomenclature, where hydroxylation at the terminal side chain of cholesterol is on C-26 leading to 26-hydroxycholesterol (26-HC) which may have 25R or 25S stereochemistry [26]. Unless stated otherwise 25R stereochemistry is assumed. In much of the literature (25R)26-HC is referred to 27-hydroxycholesterol (27-HC), presumably the 25R isomer." [PMID:22366074]
  • "26-HC, 25R-stereochemistry is assumed unless indicated otherwise, also called 27-hydroxycholesterol" [PMID:31698146]
24S-HCMetaboliteQ27071873 (Wikidata)
  • AKA (24S)-hydroxycholesterol
  • Can corss the Blood-Brain-Barrier (to remove cholesterol from brain tissue) [PMID:8790411; 9717719]
25-HCMetaboliteQ27071875 (Wikidata)
  • AKA 25-Hydroxycholesterol
  • Produced by macrophages [PMID: 19805370, 19502589, 23273843], in vivo [PMID: 25104388].
3α,7α,12α−tri-H-5β- cholestan-(25R)26-oic acidMetabolite23657849 (PubChem-compound) AKA (25R)-3alpha,7alpha,12alpha-trihydroxy-5beta-cholestan-26-oic acid
3β,7α-diHCAMetaboliteQ27154974 (Wikidata) Aka 3β,7α-dihydroxycholest-5-en-(25R)26-oic acid
3β-HCAMetabolite40579073 (PubChem-compound)
  • "AKA (25R)-3beta-hydroxycholest-5-en-26-oic acid; 3β-HC-5-en-(25R)26-oic acid
  • "Pathway starting from this metabolite to 3β,7alpha-HCA is considered the acidic or alternative PW of bile acid biosynthesis" [PMID:31698146,12543708]
5,6-alpha-EpoxycholesterolMetaboliteQ27121609 (Wikidata) AKA 5,6α-epoxycholesterol
5β-CO-3α,7α,12α −(25R)26-tetrolMetabolite24771793 (PubChem-compound) aka (25R)-5beta-cholestane-3alpha,7alpha,12alpha,26-tetrol
5β-CO-3α,7α,12α−triolMetabolite160520 (PubChem-compound) aka 5beta-cholestane-3alpha,7alpha,12alpha-triol ; trihydroxycoprostane
7-alpha,25-diHCMetaboliteLMST04030166 (LIPID MAPS)
  • AKA 7α,25-Dihydroxycholesterol
  • Involved in immune response (agonist of G-protein-coupled receptor EBI2 (AKA GPR183)) [PMID: 21796212, 21796211].
7-alpha-HCMetaboliteQ155744 (Wikidata) AKA 7α-hydroxycholesterol (7α-HC)
7-beta, (25R)26-diHCMetaboliteQ27074030 (Wikidata) AKA 7β,26-dihydroxycholesterol (7β,26-diHC).
7-beta-HCMetaboliteQ27074031 (Wikidata) AKA 7β-hydroxycholesterol (7β-HC)
7-oxo-C and 7beta-HC pathwaysPathwayWP5064 (WikiPathways)
7a,12a,24,25-TetraH- cholest-4-en-3-oneMetaboliteLMST04030248 (LIPID MAPS) aka 7a,12a,24,25-Tetrahydroxycholest-4-en-3-one
7a,12a,25-TriH-cholest- 4-en-3,24-dioneMetaboliteLMST04030249 (LIPID MAPS) aka 7a,12a,25-Trihydroxycholest-4-en-3,24-dione
7a,12a,25-TriH-cholest- 4-en-3-oneMetabolite5284265 (PubChem-compound) aka 7a,12a,25-Trihydroxycholest-4-en-3-one
7a,12a-DiH-3-oxochol- 4-en-24-oic acidMetaboliteLMST04010241 (LIPID MAPS) aka 7a,12a-Dihydroxy-3-oxochol-4-en-24-oic acid
7a,24R-Dihydroxy-3-oxocholest- 4-en-(25R)26-oyl-CoAMetaboliteLMST04030256 (LIPID MAPS)
7a,24S-DiHCOMetaboliteLFFHZNXDGBQZCO-GXKBHXPCSA-N (InChIKey) aka 7a,24S-Dihydroxycholest-4-en-3-one, 7a,24S-DiH-cholest-4-en-3-one
  • aka 7a,24S-Dihydroxycholesterol, 7a,24S-DiH-cholesterol
  • Found in human plasma [PMID:31009661]
7a,24S-Dihydroxy-3-oxocholest- 4-en-(25R)26-oic acidMetaboliteLMST04030247 (LIPID MAPS)
7a,24S-Dihydroxy-3-oxocholest- 4-en-(25R)26-oyl CoAMetaboliteLMST04030251 (LIPID MAPS)
7a,24S-diH,3O-CAMetaboliteLMST04030247 (LIPID MAPS)
  • aka 7a,24S-Dihydroxy-3-oxocholest-4-en-26-oic acid, 7a,24S-DiH-3-oxocholest-4-en-26-oic acid
  • Identified in human plasma [PMID:29960034] and CSF [PMID:30578919,29960034]
7a,25-DiH-3-oxocholest- 4-en-26-oic acidMetaboliteDUYGXKURNABVMD-KOGONGFSSA-N (InChIKey)
  • aka 7a,25-Dihydroxy-3-oxocholest-4-en-26-oic acid; 7alpha,25-diH,3O-CA
  • Found in human plasma and cerebrospinal fluid (CSF) [PMID:29960034]; reduced levels found in Alzheimers disease.
7a,25-DiH-cholest- 4-en-3-oneMetabolitePOUKDTOWHPHYQU-HENOKILYSA-N (InChIKey) aka 7a,25-Dihydroxycholest-4-en-3-one, 7a,25-diHCO.
7a-Hydroxy-3,24-bisoxocholest-4- en-(25R)26-oyl-CoAMetaboliteLMST04030254 (LIPID MAPS)
7a-Hydroxy-3-oxochol- 4-en-24-oic acidMetaboliteCFLVYJJIZHNITM-NLXMLWGDSA-N (InChIKey)
7a-Hydroxy-3-oxochol- 4-en-24-oyl-CoAMetaboliteLMST04010462 (LIPID MAPS)
7a-Hydroxy-3-oxochol- 4-en-24-oyl-glycineMetaboliteLMST05030020 (LIPID MAPS)
7a-Hydroxy-3-oxochol- 4-en-24-oyl-taurineMetaboliteLMST05040022 (LIPID MAPS)
7a-Hydroxy-3-oxocholest- 4,24(E)-dien-26-oyl-CoAMetaboliteLMST04030258 (LIPID MAPS)
7a-Hydroxy-3-oxocholest-4- en-(25R)26-oyl-CoAMetaboliteLMST04030252 (LIPID MAPS)
7a-Hydroxy-3-oxocholest-4- en-(25S)26-oyl-CoAMetaboliteLMST04030253 (LIPID MAPS)
7α(25R)26−diHCOMetabolite11144200 (PubChem-compound) aka (25R)-7alpha,26-dihydroxycholest-4-en-3-one
7α(25S)26-diHCMetaboliteLMST01010466 (LIPID MAPS) aka 7α,(25S)26-dihydroxycholesterol
7α(25S)26-diHCOMetaboliteLMST01010465 (LIPID MAPS) aka 7α,(25S)26-dihydroxycholest-4-en-3-one
7α, 12α,(25R)26−triHCOMetaboliteLMST01010464 (LIPID MAPS) aka 7alpha,12alpha,(25R)26-trihydroxycholest-4-en-3-one
7α,12α,(25R)26 -TriH-5β-COMetaboliteLMST04030246 (LIPID MAPS) aka 7α,12α,(25R)26-TriHydroxy-5β-cholestan-3-one
7α,12α,-H-3-oxoC-4- en-(25R)26-oic acidMetabolitePEIQVFBLXUEBGA-GJKGPBNHSA-N (InChIKey) aka 7-alpha,12-alpha-diHydroxy-3-oxocholest-4-en-(25R)26-oic acid (not available in Wikidata)
7α,12α-diH-3-oxo-5β-CO -(25R)26-oic acidMetaboliteIPDDUDDXZPWYCG-RSIKEQKEQTSA-N (InChIKey) aka 7α,12α-diHydroxy-3-oxo-5β-cholestan-(25R)26-oic acid
7α,12α−diH-5β-COMetabolite5284271 (PubChem-compound) aka 7alpha,12alpha-dihydroxy-5beta-cholestan-3-one
7α,12α−diHCOMetaboliteLMST04030114 (LIPID MAPS) aka 7alpha-hydroxycholest-4-en-3-one
7α,25-diHCMetaboliteCHEBI:37623 (ChEBI)
  • aka 7α,25-dihydroxycholesterol
  • "the most potent EBI2 agonist 7α,25-dihydroxycholesterol (7α,25-diHC))" [PMID:31698146]
7α,25-diHCOMetaboliteCHEBI:81013 (ChEBI) aka 7α,25-dihydroxycholest-4-en-3-one
7α,26-diHCMetaboliteQ28487682 (Wikidata) AKA 7α,26-dihydroxycholesterol; 7-alpha, (25R)26-diHC
7α-H-3-oxoC-4-en- (25R)26-oic acidMetaboliteLMST04030242 (LIPID MAPS) aka 7-Hydroxy-3-oxocholest-4-en-(25R)26-oic acid
7α−HCOMetaboliteCHEBI:17899 (ChEBI)
  • aka 7α-hydroxycholest-4-en-3-one
  • "7α−HCO is a ligand to the pregnane X receptor (PXR), a member of the nuclear receptor superfamily" [PMID:31698146]
ACOT11ProteinQ8WXI4 (Uniprot-TrEMBL)
ACOT12ProteinQ8WYK0 (Uniprot-TrEMBL)
ACOT13ProteinQ9NPJ3 (Uniprot-TrEMBL)
ACOT15ProteinQ8N1Q8 (Uniprot-TrEMBL)
ACOT1ProteinQ86TX2 (Uniprot-TrEMBL)
ACOT2ProteinP49753 (Uniprot-TrEMBL) "originally thought to be in peroxisome [PMID:10944470)], later found to be mitochondrial [PMID:16940157]" [https://www.uniprot.org/uniprot/P49753]
ACOTProtein3.1.2.2 (Enzyme Nomenclature) acyl-CoA thioesterase are a group of enzymes
ACOT4ProteinQ8N9L9 (Uniprot-TrEMBL) "Compared to mouse peroxisomal succinyl-coenzyme A thioesterase/ACOT4, the human enzyme has a broad substrate specificity overlapping the activity of three mouse acyl-coenzyme A thioesterases, providing an explanation for the unexpectedly low number of acyl-coenzyme A thioesterase genes in the human genome [PMID:16940157]" [https://www.uniprot.org/uniprot/Q8N9L9]
ACOT6ProteinQ3I5F7 (Uniprot-TrEMBL)
ACOT7LProteinQ6ZUV0 (Uniprot-TrEMBL) "Could be the product of a pseudogene. The peptide used to produce antibodies against ACOT7L matches at 85% with ACOT7 and the antibodies may not be specific to ACOT7L." [https://www.uniprot.org/uniprot/Q6ZUV0]
ACOT7ProteinO00154 (Uniprot-TrEMBL)
ACOT8ProteinO14734 (Uniprot-TrEMBL)
ACOT9ProteinQ9Y305 (Uniprot-TrEMBL)
ACOX2GeneProductACOX2 (HGNC)
AKR1C4GeneProductAKR1C4 (HGNC) Reduction and oxidation

(presumably by AKR1D1 and AKR1C4)

may precede before or after 24-hydroxylation.
AKR1D1GeneProductAKR1D1 (HGNC)
  • alpha-methylacyl-CoA racemase
  • broadly expressed [PMID:24309898, 25409824(mouse)]
BAATGeneProductBAAT (HGNC) amino acid N-acyl transferase
BACS (SLC27A5)GeneProductSLC27A5 (HGNC)
  • Bile Acid CoA ligase (or synthetase)
  • microsomal protein mostly expressed in liver [PMID:24309898, 25409824(mouse)]
CH25HProteinO95992 (Uniprot-TrEMBL) AKA cholesterol 25-hydroxylase
CYP27A1GeneProductCYP27A1 (HGNC)
CYP39A1GeneProductCYP39A1 (HGNC) Mostly expressed in liver, also in brain [PMID:24309898,25409824 (mouse)]
CYP3A4GeneProductCYP3A4 (HGNC) Alternative protein to CH25H for hydroxylation
CYP8B1GeneProductCYP8B1 (HGNC)
ChEHProteinP34913 (Uniprot-TrEMBL)
  • AKA cholesterol epoxide hydrolase (ChEH); EC:
  • "ChEH is a dimer of 7-dehydrocholesterol reductase (DHCR7) and 3β-hydroxysteroid-Δ8-Δ7-isomerase (D8D7I)"
Cholestane-3-beta, 5-alpha, 6-beta-triolMetaboliteQ27103493 (Wikidata)
  • AKA cholestane-3β,5α,6β-triol
  • "Biomarker for NPC1; elevated levels of cholestane-3β,5α,6β-triol in plasma from NPC1 patients." [PMID: 21048217].
CholesterolMetaboliteQ43656 (Wikidata)
Cholic acidMetaboliteLMST04010001 (LIPID MAPS)
Cyp27A1ProteinQ02318 (Uniprot-TrEMBL)
Cyp3A4ProteinP08684 (Uniprot-TrEMBL) Reaction also occurs in mouse: CYP3A11
Cyp46A1ProteinQ9Y6A2 (Uniprot-TrEMBL) Responsible for cholesterol homeostasis in brain [PMID:8790411]. Expressed mainly in Brain, however also small quantities in testis and ovary [PMID:24309898,25409824(mouse)].
Cyp7A1ProteinP22680 (Uniprot-TrEMBL)
  • cholesterol 7 alpha-hydroxylase, the rate-limiting enzyme in bile acid biosynthesis.
  • "the transcript of which is almost exclusively expressed in liver" [PMID:31698146]
Cyp7B1ProteinO75881 (Uniprot-TrEMBL)
D8D7IProteinQ15125 (Uniprot-TrEMBL)
  • "ChEH is a dimer of 7-dehydrocholesterol reductase (DHCR7) and 3β-hydroxysteroid-Δ8-Δ7-isomerase (D8D7I)"
  • also known as the emopamyl binding protein (EBP), which is the catalytic subunit [https://en.wikipedia.org/wiki/Cholesterol-5,6-oxide_hydrolase]
DBPGeneProductDBP (HGNC) D-biofinctional protein; aka MFE2, HSD17B4
DDAMetaboliteQ61983671 (Wikidata) AKA Dendrogenin A
DHCR7ProteinQ9UBM7 (Uniprot-TrEMBL)
  • "ChEH is a dimer of 7-dehydrocholesterol reductase (DHCR7) and 3β-hydroxysteroid-Δ8-Δ7-isomerase (D8D7I)"
  • the 3beta-hydroxysteroid delta7 reductase (DHCR7), which is the regulatory subunit. [https://en.wikipedia.org/wiki/Cholesterol-5,6-oxide_hydrolase]
EBI2ProteinP32249 (Uniprot-TrEMBL)
Estrogen receptor alphaProteinP03372 (Uniprot-TrEMBL) Expressed in vascular cells.
Estrogen receptor betaProteinQ92731 (Uniprot-TrEMBL) Expressed in vascular cells.
HSD3B7GeneProductHSD3B7 (HGNC)
HSD3B7ProteinQ9H2F3 (Uniprot-TrEMBL)
IL-17AProteinQ16552 (Uniprot-TrEMBL) "IL-17 familiy is essential in host defense and may play key pathogenic roles in autoimmune diseases." [PMID: 25092323]
IL-17BProteinQ9UHF5 (Uniprot-TrEMBL) "IL-17 familiy is essential in host defense and may play key pathogenic roles in autoimmune diseases." [PMID: 25092323]
IL-17CProteinQ9P0M4 (Uniprot-TrEMBL) "IL-17 familiy is essential in host defense and may play key pathogenic roles in autoimmune diseases." [PMID: 25092323]
IL-17DProteinQ8TAD2 (Uniprot-TrEMBL) "IL-17 familiy is essential in host defense and may play key pathogenic roles in autoimmune diseases." [PMID: 25092323]
IL-17EProteinQ9H293 (Uniprot-TrEMBL) "IL-17 familiy is essential in host defense and may play key pathogenic roles in autoimmune diseases." [PMID: 25092323]
IL-17FProteinQ96PD4 (Uniprot-TrEMBL) "IL-17 familiy is essential in host defense and may play key pathogenic roles in autoimmune diseases." [PMID: 25092323]
INSIGProteinO15503 (Uniprot-TrEMBL)
LBPGeneProductLBP (HGNC) L-bifunctional protein, aka MFP1, enoyl-CoA hydratase and 3-hydroxacyl CoA dehydrogenase EHHADH).
LXR-alphaProteinP13133 (Uniprot-TrEMBL)
LXR-betaProteinP55055 (Uniprot-TrEMBL)
PXRProteinO75469 (Uniprot-TrEMBL)
ROR-γt ProteinF1D8P6 (Uniprot-TrEMBL)
  • AKA RAR-related orphan receptor gamma (RORγt); consists of 2 isoforms: RORγ and RORγt. This nuclear receptor is required for generating IL-17-producing CD4(+) Th17 T cells.
  • "RORγt (also known as RORγ2) – produced from an mRNA identical to that of RORγ, except that the two 5'-most exons are replaced by an alternative exon, located downstream in the gene. This causes a different, shorter N-terminus." [https://en.wikipedia.org/wiki/RAR-related_orphan_receptor_gamma]
SCPx (SCP2)GeneProductSCP2 (HGNC)
VLCS (SLC27A2)GeneProductSLC27A2 (HGNC)
  • very-long chain acyl-CoA synthetase
  • expressed mostly in liver and kidney, and present in ER and peroxisome [PMID:24309898, 25409824(mouse)]
histamineMetaboliteQ61233 (Wikidata)

Annotated Interactions

View all...
SourceTargetTypeDatabase referenceComment
25-HC7-alpha,25-diHCmim-conversion24309 (Rhea)
7-alpha-HC7α−HCOmim-conversion11897 (Rhea) oxidation
7α,25-diHC7α,25-diHCOmim-conversion47157 (Rhea)
Cholesterol(25R)26-HCmim-conversion46401 (Rhea)
Cholesterol24S-HCmim-conversion22717 (Rhea)
Cholesterol25-HCmim-conversion21105 (Rhea)
Cholesterol7-alpha-HCmim-conversion21813 (Rhea) 7α-hydroxylation
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