CP1A1_MESAU
ID CP1A1_MESAU Reviewed; 524 AA.
AC Q00557; Q64665;
DT 01-OCT-1993, integrated into UniProtKB/Swiss-Prot.
DT 15-DEC-1998, sequence version 2.
DT 03-AUG-2022, entry version 109.
DE RecName: Full=Cytochrome P450 1A1;
DE EC=1.14.14.1 {ECO:0000250|UniProtKB:P04798};
DE AltName: Full=CYPIA1;
DE AltName: Full=Cytochrome P-450MC;
DE AltName: Full=Cytochrome P450 form 6;
DE AltName: Full=Cytochrome P450-C;
DE AltName: Full=Cytochrome P450-P1;
DE AltName: Full=Hydroperoxy icosatetraenoate dehydratase;
DE EC=4.2.1.152 {ECO:0000250|UniProtKB:P04798};
GN Name=CYP1A1;
OS Mesocricetus auratus (Golden hamster).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea;
OC Cricetidae; Cricetinae; Mesocricetus.
OX NCBI_TaxID=10036;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC TISSUE=Lung;
RX PubMed=1778988; DOI=10.1093/oxfordjournals.jbchem.a123633;
RA Sagami I., Ohmachi T., Fujii H., Kikuchi H., Watanabe M.;
RT "Hamster cytochrome P-450 IA gene family, P-450IA1 and P-450IA2 in lung and
RT liver: cDNA cloning and sequence analysis.";
RL J. Biochem. 110:641-647(1991).
RN [2]
RP NUCLEOTIDE SEQUENCE.
RA Ohgiya S., Goda T., Ishizaki K., Morimoto M., Sakamoto T., Kamataki T.,
RA Shinriki N.;
RT "Molecular cloning and expression of hamster cytochrome P450 1A1 and
RT cytochrome P450 reductase.";
RL Submitted (SEP-1992) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: A cytochrome P450 monooxygenase involved in the metabolism of
CC various endogenous substrates, including fatty acids, steroid hormones
CC and vitamins. Mechanistically, uses molecular oxygen inserting one
CC oxygen atom into a substrate, and reducing the second into a water
CC molecule, with two electrons provided by NADPH via cytochrome P450
CC reductase (CPR; NADPH-ferrihemoprotein reductase). Catalyzes the
CC hydroxylation of carbon-hydrogen bonds. Exhibits high catalytic
CC activity for the formation of hydroxyestrogens from estrone (E1) and
CC 17beta-estradiol (E2), namely 2-hydroxy E1 and E2, as well as D-ring
CC hydroxylated E1 and E2 at the C15alpha and C16alpha positions. Displays
CC different regioselectivities for polyunsaturated fatty acids (PUFA)
CC hydroxylation. Catalyzes the epoxidation of double bonds of certain
CC PUFA. Converts arachidonic acid toward epoxyeicosatrienoic acid (EET)
CC regioisomers, 8,9-, 11,12-, and 14,15-EET, that function as lipid
CC mediators in the vascular system. Displays an absolute
CC stereoselectivity in the epoxidation of eicosapentaenoic acid (EPA)
CC producing the 17(R),18(S) enantiomer. May play an important role in
CC all-trans retinoic acid biosynthesis in extrahepatic tissues. Catalyzes
CC two successive oxidative transformation of all-trans retinol to all-
CC trans retinal and then to the active form all-trans retinoic acid. May
CC also participate in eicosanoids metabolism by converting hydroperoxide
CC species into oxo metabolites (lipoxygenase-like reaction, NADPH-
CC independent). {ECO:0000250|UniProtKB:P04798}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=an organic molecule + O2 + reduced [NADPH--hemoprotein
CC reductase] = an alcohol + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:17149, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:30879, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:142491; EC=1.14.14.1;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:17151;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=estrone + O2 + reduced [NADPH--hemoprotein reductase] = 2-
CC hydroxyestrone + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:47208, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:1156, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:17263, ChEBI:CHEBI:57618,
CC ChEBI:CHEBI:58210; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47209;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=estrone + O2 + reduced [NADPH--hemoprotein reductase] = 4-
CC hydroxyestrone + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:47292, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:17263, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:87602; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47293;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=estrone + O2 + reduced [NADPH--hemoprotein reductase] =
CC 6alpha-hydroxyestrone + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:47308, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:17263, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:87605; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47309;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=estrone + O2 + reduced [NADPH--hemoprotein reductase] =
CC 15alpha-hydroxyestrone + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:47312, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:17263, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:87618; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47313;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=estrone + O2 + reduced [NADPH--hemoprotein reductase] =
CC 16alpha-hydroxyestrone + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:47204, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:776, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:17263, ChEBI:CHEBI:57618,
CC ChEBI:CHEBI:58210; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47205;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=17beta-estradiol + O2 + reduced [NADPH--hemoprotein reductase]
CC = 2-hydroxy-17beta-estradiol + H(+) + H2O + oxidized [NADPH--
CC hemoprotein reductase]; Xref=Rhea:RHEA:47212, Rhea:RHEA-COMP:11964,
CC Rhea:RHEA-COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:16469, ChEBI:CHEBI:28744,
CC ChEBI:CHEBI:57618, ChEBI:CHEBI:58210;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47213;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=17beta-estradiol + O2 + reduced [NADPH--hemoprotein reductase]
CC = 4-hydroxy-17beta-estradiol + H(+) + H2O + oxidized [NADPH--
CC hemoprotein reductase]; Xref=Rhea:RHEA:47280, Rhea:RHEA-COMP:11964,
CC Rhea:RHEA-COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:16469, ChEBI:CHEBI:57618,
CC ChEBI:CHEBI:58210, ChEBI:CHEBI:62845;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47281;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=17beta-estradiol + O2 + reduced [NADPH--hemoprotein reductase]
CC = 6alpha-hydroxy-17beta-estradiol + H(+) + H2O + oxidized [NADPH--
CC hemoprotein reductase]; Xref=Rhea:RHEA:47284, Rhea:RHEA-COMP:11964,
CC Rhea:RHEA-COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:16469, ChEBI:CHEBI:57618,
CC ChEBI:CHEBI:58210, ChEBI:CHEBI:62847;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47285;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=17beta-estradiol + O2 + reduced [NADPH--hemoprotein reductase]
CC = 7alpha-hydroxy-17beta-estradiol + H(+) + H2O + oxidized [NADPH--
CC hemoprotein reductase]; Xref=Rhea:RHEA:47288, Rhea:RHEA-COMP:11964,
CC Rhea:RHEA-COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:16469, ChEBI:CHEBI:57618,
CC ChEBI:CHEBI:58210, ChEBI:CHEBI:87598;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47289;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=17beta-estradiol + O2 + reduced [NADPH--hemoprotein reductase]
CC = 15alpha-hydroxy-17beta-estradiol + H(+) + H2O + oxidized [NADPH--
CC hemoprotein reductase]; Xref=Rhea:RHEA:47276, Rhea:RHEA-COMP:11964,
CC Rhea:RHEA-COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:16469, ChEBI:CHEBI:57618,
CC ChEBI:CHEBI:58210, ChEBI:CHEBI:87593;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47277;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z)-eicosatrienoate + O2 + reduced [NADPH--hemoprotein
CC reductase] = 19-hydroxy-(5Z,8Z,11Z)-eicosatrienoate + H(+) + H2O +
CC oxidized [NADPH--hemoprotein reductase]; Xref=Rhea:RHEA:50076,
CC Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:15379, ChEBI:CHEBI:57618,
CC ChEBI:CHEBI:58210, ChEBI:CHEBI:78043, ChEBI:CHEBI:132024;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:50077;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = 16-hydroxy-(5Z,8Z,11Z,14Z)-eicosatetraenoate
CC + H(+) + H2O + oxidized [NADPH--hemoprotein reductase];
CC Xref=Rhea:RHEA:49972, Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:32395, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:132019; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:49973;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = 17-hydroxy-(5Z,8Z,11Z,14Z)-eicosatetraenoate
CC + H(+) + H2O + oxidized [NADPH--hemoprotein reductase];
CC Xref=Rhea:RHEA:49968, Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:32395, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:132016; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:49969;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = 18-hydroxy-(5Z,8Z,11Z,14Z)-eicosatetraenoate
CC + H(+) + H2O + oxidized [NADPH--hemoprotein reductase];
CC Xref=Rhea:RHEA:39811, Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:32395, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:63590; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:39812;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = 19-hydroxy-(5Z,8Z,11Z,14Z)-eicosatetraenoate
CC + H(+) + H2O + oxidized [NADPH--hemoprotein reductase];
CC Xref=Rhea:RHEA:39759, Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:32395, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:76627; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:39760;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z,17Z)-eicosapentaenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = 19-hydroxy-(5Z,8Z,11Z,14Z,17Z)-
CC eicosapentaenoate + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:39787, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:57618, ChEBI:CHEBI:58210, ChEBI:CHEBI:58562,
CC ChEBI:CHEBI:76636; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:39788;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = (8R,9S)-epoxy-(5Z,11Z,14Z)-eicosatrienoate +
CC H(+) + H2O + oxidized [NADPH--hemoprotein reductase];
CC Xref=Rhea:RHEA:49884, Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:32395, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:131975; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:49885;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = (11R,12S)-epoxy-(5Z,8Z,14Z)-eicosatrienoate
CC + H(+) + H2O + oxidized [NADPH--hemoprotein reductase];
CC Xref=Rhea:RHEA:49880, Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:32395, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:131970; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:49881;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = (14S,15R)-epoxy-(5Z,8Z,11Z)-eicosatrienoate
CC + H(+) + H2O + oxidized [NADPH--hemoprotein reductase];
CC Xref=Rhea:RHEA:49856, Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:32395, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:131964; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:49857;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = (14R,15S)-epoxy-(5Z,8Z,11Z)-eicosatrienoate
CC + H(+) + H2O + oxidized [NADPH--hemoprotein reductase];
CC Xref=Rhea:RHEA:49860, Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:32395, ChEBI:CHEBI:57618, ChEBI:CHEBI:58210,
CC ChEBI:CHEBI:131965; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:49861;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5Z,8Z,11Z,14Z,17Z)-eicosapentaenoate + O2 + reduced [NADPH--
CC hemoprotein reductase] = (17R,18S)-epoxy-(5Z,8Z,11Z,14Z)-
CC eicosatetraenoate + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:39779, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:57618, ChEBI:CHEBI:58210, ChEBI:CHEBI:58562,
CC ChEBI:CHEBI:76634; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:39780;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoate + O2 + reduced
CC [NADPH--hemoprotein reductase] = (19S,20R)-epoxy-(4Z,7Z,10Z,13Z,16Z)-
CC docosapentaenoate + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:52124, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:57618, ChEBI:CHEBI:58210, ChEBI:CHEBI:77016,
CC ChEBI:CHEBI:136411; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:52125;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoate + O2 + reduced
CC [NADPH--hemoprotein reductase] = (19R,20S)-epoxy-(4Z,7Z,10Z,13Z,16Z)-
CC docosapentaenoate + H(+) + H2O + oxidized [NADPH--hemoprotein
CC reductase]; Xref=Rhea:RHEA:52120, Rhea:RHEA-COMP:11964, Rhea:RHEA-
CC COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC ChEBI:CHEBI:57618, ChEBI:CHEBI:58210, ChEBI:CHEBI:77016,
CC ChEBI:CHEBI:136410; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:52121;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=all-trans-retinol + O2 + reduced [NADPH--hemoprotein
CC reductase] = all-trans-retinal + H(+) + 2 H2O + oxidized [NADPH--
CC hemoprotein reductase]; Xref=Rhea:RHEA:42092, Rhea:RHEA-COMP:11964,
CC Rhea:RHEA-COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:17336, ChEBI:CHEBI:17898,
CC ChEBI:CHEBI:57618, ChEBI:CHEBI:58210;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:42093;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=all-trans-retinal + O2 + reduced [NADPH--hemoprotein
CC reductase] = all-trans-retinoate + 2 H(+) + H2O + oxidized [NADPH--
CC hemoprotein reductase]; Xref=Rhea:RHEA:42088, Rhea:RHEA-COMP:11964,
CC Rhea:RHEA-COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:15379, ChEBI:CHEBI:17898, ChEBI:CHEBI:35291,
CC ChEBI:CHEBI:57618, ChEBI:CHEBI:58210;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:42089;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(13S)-hydroperoxy-(9Z,11E)-octadecadienoate = 13-oxo-(9Z,11E)-
CC octadecadienoate + H2O; Xref=Rhea:RHEA:48716, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:57466, ChEBI:CHEBI:90781;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:48717;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(12S)-hydroperoxy-(5Z,8Z,10E,14Z)-eicosatetraenoate = 12-oxo-
CC (5Z,8Z,10E,14Z)-eicosatetraenoate + H2O; Xref=Rhea:RHEA:37947,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:57444, ChEBI:CHEBI:75231;
CC EC=4.2.1.152; Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:37948;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(15S)-hydroperoxy-(5Z,8Z,11Z,13E)-eicosatetraenoate = 15-oxo-
CC (5Z,8Z,11Z,13E)-eicosatetraenoate + H2O; Xref=Rhea:RHEA:48636,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:57410, ChEBI:CHEBI:57446;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:48637;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(5S)-hydroperoxy-(6E,8Z,11Z,14Z)-eicosatetraenoate = 5-oxo-
CC (6E,8Z,11Z,14Z)-eicosatetraenoate + H2O; Xref=Rhea:RHEA:48632,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:57450, ChEBI:CHEBI:65342;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:48633;
CC Evidence={ECO:0000250|UniProtKB:P04798};
CC -!- COFACTOR:
CC Name=heme; Xref=ChEBI:CHEBI:30413; Evidence={ECO:0000250};
CC -!- PATHWAY: Steroid hormone biosynthesis. {ECO:0000250|UniProtKB:P04798}.
CC -!- PATHWAY: Lipid metabolism; fatty acid metabolism.
CC {ECO:0000250|UniProtKB:P04798}.
CC -!- PATHWAY: Cofactor metabolism; retinol metabolism.
CC {ECO:0000250|UniProtKB:P04798}.
CC -!- SUBUNIT: Interacts with cytosolic chaperones HSP70 and HSP90; this
CC interaction is required for initial targeting to mitochondria.
CC Interacts (via mitochondrial targeting signal) with TOMM40 (via N-
CC terminus); this interaction is required for translocation across the
CC mitochondrial outer membrane. {ECO:0000250|UniProtKB:P00185}.
CC -!- SUBCELLULAR LOCATION: Endoplasmic reticulum membrane
CC {ECO:0000250|UniProtKB:P00185}; Peripheral membrane protein
CC {ECO:0000250|UniProtKB:P00185}. Mitochondrion inner membrane
CC {ECO:0000250|UniProtKB:P00185}; Peripheral membrane protein
CC {ECO:0000250|UniProtKB:P00185}. Microsome membrane
CC {ECO:0000250|UniProtKB:P00185}; Peripheral membrane protein
CC {ECO:0000250|UniProtKB:P00185}. Cytoplasm
CC {ECO:0000250|UniProtKB:P00185}.
CC -!- INDUCTION: By 3-methylcholanthrene (3MC).
CC -!- SIMILARITY: Belongs to the cytochrome P450 family. {ECO:0000305}.
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DR EMBL; D10251; BAA01096.1; -; mRNA.
DR EMBL; D12977; BAA02354.1; -; mRNA.
DR EMBL; D10913; BAA01717.1; -; Genomic_DNA.
DR PIR; JX0189; JX0189.
DR RefSeq; NP_001268352.1; NM_001281423.1.
DR AlphaFoldDB; Q00557; -.
DR SMR; Q00557; -.
DR STRING; 10036.XP_005069377.1; -.
DR GeneID; 101844540; -.
DR eggNOG; KOG0156; Eukaryota.
DR OrthoDB; 702827at2759; -.
DR UniPathway; UPA00199; -.
DR UniPathway; UPA00912; -.
DR Proteomes; UP000189706; Unplaced.
DR GO; GO:0005789; C:endoplasmic reticulum membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0005743; C:mitochondrial inner membrane; ISS:UniProtKB.
DR GO; GO:0070330; F:aromatase activity; IEA:UniProtKB-EC.
DR GO; GO:0101020; F:estrogen 16-alpha-hydroxylase activity; ISS:UniProtKB.
DR GO; GO:0101021; F:estrogen 2-hydroxylase activity; ISS:UniProtKB.
DR GO; GO:0020037; F:heme binding; IEA:InterPro.
DR GO; GO:0030544; F:Hsp70 protein binding; ISS:UniProtKB.
DR GO; GO:0051879; F:Hsp90 protein binding; ISS:UniProtKB.
DR GO; GO:0106256; F:hydroperoxy icosatetraenoate dehydratase activity; IEA:UniProtKB-EC.
DR GO; GO:0005506; F:iron ion binding; IEA:InterPro.
DR GO; GO:0008210; P:estrogen metabolic process; ISS:UniProtKB.
DR GO; GO:0006631; P:fatty acid metabolic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0042572; P:retinol metabolic process; ISS:UniProtKB.
DR GO; GO:0006694; P:steroid biosynthetic process; IEA:UniProtKB-KW.
DR Gene3D; 1.10.630.10; -; 1.
DR InterPro; IPR001128; Cyt_P450.
DR InterPro; IPR017972; Cyt_P450_CS.
DR InterPro; IPR002401; Cyt_P450_E_grp-I.
DR InterPro; IPR008066; Cyt_P450_E_grp-I_CYP1.
DR InterPro; IPR036396; Cyt_P450_sf.
DR Pfam; PF00067; p450; 1.
DR PRINTS; PR00463; EP450I.
DR PRINTS; PR01683; EP450ICYP1A.
DR PRINTS; PR00385; P450.
DR SUPFAM; SSF48264; SSF48264; 1.
DR PROSITE; PS00086; CYTOCHROME_P450; 1.
PE 2: Evidence at transcript level;
KW Cytoplasm; Endoplasmic reticulum; Glycoprotein; Heme; Iron;
KW Lipid biosynthesis; Lipid metabolism; Lyase; Membrane; Metal-binding;
KW Microsome; Mitochondrion; Mitochondrion inner membrane; Monooxygenase;
KW Oxidoreductase; Reference proteome; Steroid biosynthesis.
FT CHAIN 1..524
FT /note="Cytochrome P450 1A1"
FT /id="PRO_0000051630"
FT REGION 33..44
FT /note="Mitochondrial targeting signal"
FT /evidence="ECO:0000250|UniProtKB:P00185"
FT BINDING 228
FT /ligand="substrate"
FT /evidence="ECO:0000250"
FT BINDING 461
FT /ligand="heme"
FT /ligand_id="ChEBI:CHEBI:30413"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250"
FT CARBOHYD 71
FT /note="O-linked (GlcNAc) serine"
FT /evidence="ECO:0000250"
FT CONFLICT 18
FT /note="L -> V (in Ref. 1; BAA01096)"
FT /evidence="ECO:0000305"
FT CONFLICT 521
FT /note="H -> Y (in Ref. 1; BAA01096)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 524 AA; 59136 MW; 2A4C6AF9AE5FD8E0 CRC64;
MSSIYGLLNF MSATELLLAI TVFCLGFWVV RALRTQVPKG LKTPPGPWGL PILGHVLTLG
KNPHLSLTKL SKQYGDVLQI RIGSTPVVVL SGLDTIRQAL VRQGDDFKGR PDFYSFTLIT
NGKSMTFNPD CGPVWAARRR LAQDALKSFS IALDPASASS CYLEEYVIKE ADYLISKFQK
LMAEVGHFDP DRYLVVSVTN VICAMCFGQR YDHDDQELLS IVNLSNEFGK VTGSGYPPDF
IPILRYLPNS SLDAFKDLNK KFYSFMQKSV KEHYRTFEKG HIRDITDSLI EHCQDKSLDE
NANVQLSDDR VINIIVDLFG AGFDTVTTAI SWSLMYLVTN PGVQRKIQEE LDTVIGRSRR
PRLCDRSQLP YLEAFILETF RHSSFLPFTI PHSTTRDTSL CGFYIPKGHC VFVNQWQINH
NQELWGDPNK FRPERFLTSS GTLDKVLSGK VTLFGLGKRK CIGETIGRLE VFLFLAILLQ
QIEFTVSPGE KVDMTPIYGL TLKHARCEYF QAQTRSSGPQ HPQA
