UGT1A1


Summary: This gene encodes a UDP-glucuronosyltransferase, an enzyme of the glucuronidation pathway that transforms small lipophilic molecules, such as steroids, bilirubin, hormones, and drugs, into water-soluble, excretable metabolites. This gene is part of a complex locus that encodes several UDP-glucuronosyltransferases. The locus includes thirteen unique alternate first exons followed by four common exons. Four of the alternate first exons are considered pseudogenes. Each of the remaining nine 5' exons may be spliced to the four common exons, resulting in nine proteins with different N-termini and identical C-termini. Each first exon encodes the substrate binding site, and is regulated by its own promoter. The preferred substrate of this enzyme is bilirubin, although it also has moderate activity with simple phenols, flavones, and C18 steroids. Mutations in this gene result in Crigler-Najjar syndromes types I and II and in Gilbert syndrome. [provided by RefSeq, Jul 2008].

NameOMIM IDEnsembl IDHGNC IDPHARMGKB IDMap Location
UDP glucuronosyltransferase family 1 member A1MIM:191740Ensembl:ENSG00000241635HGNC:HGNC:12530PA4202q37.1

GO terms in UGT1A1


Term TypeEvidence TypeGO Term IDGO Des.
BPIEAGO:0001889liver development
BPTASGO:0006789bilirubin conjugation
BPIEAGO:0006953acute-phase response
BPIEAGO:0007584response to nutrient
BPICGO:0008202steroid metabolic process
BPTASGO:0008210estrogen metabolic process
BPICGO:0017144drug metabolic process
BPIEAGO:0031100animal organ regeneration
BPIEAGO:0032496response to lipopolysaccharide
BPTASGO:0042167heme catabolic process
BPICGO:0042573retinoic acid metabolic process
BPIEAGO:0042594response to starvation
BPIEAGO:0043086negative regulation of catalytic activity
BPICGO:0045939negative regulation of steroid metabolic process
BPICGO:0046483heterocycle metabolic process
BPIDAGO:0051552flavone metabolic process
BPIDAGO:0052695cellular glucuronidation
BPTASGO:0052695cellular glucuronidation
BPIBAGO:0052696flavonoid glucuronidation
BPIDAGO:0052696flavonoid glucuronidation
BPIBAGO:0052697xenobiotic glucuronidation
BPIDAGO:0052697xenobiotic glucuronidation
BPIEAGO:0070980biphenyl catabolic process
BPIEAGO:0071361cellular response to ethanol
BPIEAGO:0071385cellular response to glucocorticoid stimulus
BPIEAGO:0071392cellular response to estradiol stimulus
CCIDAGO:0005783endoplasmic reticulum
CCTASGO:0005789endoplasmic reticulum membrane
CCIEAGO:0005887integral component of plasma membrane
CCIEAGO:0034663endoplasmic reticulum chaperone complex
CCIBAGO:0043231intracellular membrane-bounded organelle
CCIEAGO:0070069cytochrome complex
MFIDAGO:0001972retinoic acid binding
MFIDAGO:0004857enzyme inhibitor activity
MFIDAGO:0005496steroid binding
MFIBAGO:0008194UDP-glycosyltransferase activity
MFIDAGO:0015020glucuronosyltransferase activity
MFTASGO:0015020glucuronosyltransferase activity
MFIEAGO:0019899enzyme binding
MFIDAGO:0042803protein homodimerization activity
MFIDAGO:0046982protein heterodimerization activity

Gene expression in normal tissue: UGT1A1

Gene-model tissue-cancer distribution: Bubble Plot

Gene-drug pathway distribution

Pathways in UGT1A1


DatabasePathway IDPathway Des.
pharmgkbPA145011108Statin Pathway - Generalized, Pharmacokinetics
pharmgkbPA145011109Atorvastatin/Lovastatin/Simvastatin Pathway, Pharmacokinetics
pharmgkbPA145011111Fluvastatin Pathway, Pharmacokinetics
pharmgkbPA145011115Phenytoin Pathway, Pharmacokinetics
pharmgkbPA145011118Estrogen Metabolism Pathway
pharmgkbPA146123006Codeine and Morphine Pathway, Pharmacokinetics
pharmgkbPA154426903Erlotinib Pathway, Pharmacokinetics
pharmgkbPA164713428Losartan Pathway, Pharmacokinetics
pharmgkbPA165959537Sorafenib Pharmacokinetics
pharmgkbPA165986194Pathway_PA165986194 -need delete
pharmgkbPA165986279Acetaminophen Pathway, Pharmacokinetics
pharmgkbPA2001Irinotecan Pathway, Pharmacokinetics
pharmgkbPA2025Etoposide Pathway, Pharmacokinetics/Pharmacodynamics
pharmgkbPA2029Irinotecan Pathway, Pharmacodynamics
kegghsa00040Pentose and glucuronate interconversions - Homo sapiens (human)
kegghsa00053Ascorbate and aldarate metabolism - Homo sapiens (human)
kegghsa00140Steroid hormone biosynthesis - Homo sapiens (human)
kegghsa00830Retinol metabolism - Homo sapiens (human)
kegghsa00860Porphyrin and chlorophyll metabolism - Homo sapiens (human)
kegghsa00980Metabolism of xenobiotics by cytochrome P450 - Homo sapiens (human)
kegghsa00982Drug metabolism - cytochrome P450 - Homo sapiens (human)
kegghsa00983Drug metabolism - other enzymes - Homo sapiens (human)
kegghsa05204Chemical carcinogenesis - Homo sapiens (human)
wikipathwaysWP1604Codeine and Morphine Metabolism
wikipathwaysWP229Irinotecan Pathway
wikipathwaysWP2873Aryl Hydrocarbon Receptor Pathway
wikipathwaysWP2875Constitutive Androstane Receptor Pathway
wikipathwaysWP2876Pregnane X Receptor pathway
wikipathwaysWP2882Nuclear Receptors Meta-Pathway
wikipathwaysWP2884NRF2 pathway
wikipathwaysWP4010Liver steatosis AOP
wikipathwaysWP697Estrogen metabolism
wikipathwaysWP698Glucuronidation
wikipathwaysWP702Metapathway biotransformation Phase I and II
smpdbSMP00074Retinol Metabolism
smpdbSMP00086Ibuprofen Action Pathway
smpdbSMP00327Phenytoin (Antiarrhythmic) Action Pathway
smpdbSMP00336Vitamin A Deficiency
smpdbSMP00406Morphine Action Pathway
smpdbSMP00433Irinotecan Action Pathway
smpdbSMP00442Etoposide Action Pathway
smpdbSMP00590Ibuprofen Metabolism Pathway
smpdbSMP00600Irinotecan Metabolism Pathway
smpdbSMP00601Etoposide Metabolism Pathway
smpdbSMP00622Morphine Metabolism Pathway
smpdbSMP00640Acetaminophen Metabolism Pathway
smpdbSMP00648Sorafenib Metabolism Pathway
reactomeR-HSA-1430728Metabolism
reactomeR-HSA-156580Phase II - Conjugation of compounds
reactomeR-HSA-156588Glucuronidation
reactomeR-HSA-1643685Disease
reactomeR-HSA-189445Metabolism of porphyrins
reactomeR-HSA-189483Heme degradation
reactomeR-HSA-211859Biological oxidations
reactomeR-HSA-5579002Defective UGT1A1 causes hyperbilirubinemia
reactomeR-HSA-5579029Metabolic disorders of biological oxidation enzymes
reactomeR-HSA-5668914Diseases of metabolism

Gene-Drug: Aster Plot


Drug IDDrug NameModel Num.
iGMDRD1035X16 beta bromoandrosterone1
iGMDRD38Prochlorperazine1
iGMDRD883CIL55A1
iGMDRD154NSC237661
iGMDRD50Cytarabine1
iGMDRD532Olaparib1
iGMDRD703KPT1851
iGMDRD560MK-22061
iGMDRD366PI-1031
iGMDRD104Fingolimod2
iGMDRD87Epigallocatechin-3-monogallate1
iGMDRD704Ganetespib (STA-9090)1
iGMDRD147Prima-11
iGMDRD373IC-871141
iGMDRD787PF 1841
iGMDRD251ML1621
iGMDRD158NSC1415401
iGMDRD244ML3111
iGMDRD186SMER32
iGMDRD265Dacarbazine1
iGMDRD105Triptolide1
iGMDRD221Tamoxifen1
iGMDRD537Silmitasertib1
iGMDRD861BRD-K928560601
iGMDRD661UNC-03211
iGMDRD488KU-600191
iGMDRD385CD15301
iGMDRD425ERASTIN2
iGMDRD866BRD18121
iGMDRD580MLN24801
iGMDRD397Pazopanib1
iGMDRD483SCH-5290741
iGMDRD779PRL-3 Inhibitor I1
iGMDRD1Nicotin-Amide1
iGMDRD670ML 2101
iGMDRD546BMS-7548071
iGMDRD851BRD-K342228891
iGMDRD188Piperlongumine1
iGMDRD94Narciclasine1
iGMDRD190Nilotinib3
iGMDRD340SU 112741
iGMDRD848BRD-K284567061
iGMDRD847BRD-K265311771
iGMDRD178MG-1321
iGMDRD252C20H13BrN2O3S21
iGMDRD279Istradefylline1
iGMDRD426WP11301
iGMDRD492HBX-411081
iGMDRD177Teniposide1
iGMDRD346Nintedanib1
iGMDRD148Pifithrin-mu1
iGMDRD774ETP-464641
iGMDRD307Manumycin A1
iGMDRD652UNC06381
iGMDRD256NVP-2311
iGMDRD125BIRB-7962
iGMDRD80Irinotecan3
iGMDRD141NSC483001
iGMDRD414MST-3121
iGMDRD990PL.DI2
iGMDRD946ML3201
iGMDRD646PHA-7938871
iGMDRD886Compound 1541A1
iGMDRD505Pevonedistat1
iGMDRD208Necrosulfonamide1
iGMDRD231Importazole2
iGMDRD504Obatoclax1
iGMDRD6AM-5802
iGMDRD78Topotecan1
iGMDRD66Doxorubicin1
iGMDRD591PF-37583091
iGMDRD853BRD-K456814781
iGMDRD401Afatinib1
iGMDRD579PF7501
iGMDRD387CHIR-990211
iGMDRD302C6 ceramide1
iGMDRD144NSC953971
iGMDRD398Sepantronium1
iGMDRD562Navitoclax1
iGMDRD609BRD-K664538931
iGMDRD577BIX012941
iGMDRD145Omacetaxine mepesuccinate1
iGMDRD325Belinostat2
iGMDRD268Cerulenin1
iGMDRD640CAY106181
iGMDRD533HSCI1_0002701
iGMDRD852BRD-K356044181
iGMDRD255SB2250021
iGMDRD613CHEMBL2581481
iGMDRD138PX 121
iGMDRD727Alpelisib1
iGMDRD441TW 371
iGMDRD1037X1S.3R.RSL.31

Gene in drug-gene network: Network Plot

Gene-drug targets distribution

Gene Structure: PDB

Models in UGT1A1

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