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CTAA_RHOP5
ID   CTAA_RHOP5              Reviewed;         362 AA.
AC   Q07MP8;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   31-OCT-2006, sequence version 1.
DT   03-AUG-2022, entry version 81.
DE   RecName: Full=Heme A synthase {ECO:0000255|HAMAP-Rule:MF_01665};
DE            Short=HAS {ECO:0000255|HAMAP-Rule:MF_01665};
DE            EC=1.17.99.9 {ECO:0000255|HAMAP-Rule:MF_01665};
DE   AltName: Full=Cytochrome aa3-controlling protein {ECO:0000255|HAMAP-Rule:MF_01665};
GN   Name=ctaA {ECO:0000255|HAMAP-Rule:MF_01665}; OrderedLocusNames=RPE_2849;
OS   Rhodopseudomonas palustris (strain BisA53).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Rhodopseudomonas.
OX   NCBI_TaxID=316055;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=BisA53;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Chain P., Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Pelletier D.A., Kyrpides N., Kim E., Harwood C.S., Oda Y.,
RA   Richardson P.;
RT   "Complete sequence of Rhodopseudomonas palustris BisA53.";
RL   Submitted (SEP-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the conversion of heme O to heme A by two
CC       successive hydroxylations of the methyl group at C8. The first
CC       hydroxylation forms heme I, the second hydroxylation results in an
CC       unstable dihydroxymethyl group, which spontaneously dehydrates,
CC       resulting in the formyl group of heme A. {ECO:0000255|HAMAP-
CC       Rule:MF_01665}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 A + Fe(II)-heme o + H2O = 2 AH2 + Fe(II)-heme a;
CC         Xref=Rhea:RHEA:63388, ChEBI:CHEBI:13193, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:17499, ChEBI:CHEBI:60530, ChEBI:CHEBI:61715;
CC         EC=1.17.99.9; Evidence={ECO:0000255|HAMAP-Rule:MF_01665};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:63389;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01665};
CC   -!- COFACTOR:
CC       Name=heme b; Xref=ChEBI:CHEBI:60344;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01665};
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; heme A biosynthesis;
CC       heme A from heme O: step 1/1. {ECO:0000255|HAMAP-Rule:MF_01665}.
CC   -!- SUBUNIT: Interacts with CtaB. {ECO:0000255|HAMAP-Rule:MF_01665}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_01665};
CC       Multi-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_01665}.
CC   -!- SIMILARITY: Belongs to the COX15/CtaA family. Type 2 subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01665}.
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DR   EMBL; CP000463; ABJ06786.1; -; Genomic_DNA.
DR   RefSeq; WP_011664263.1; NC_008435.1.
DR   AlphaFoldDB; Q07MP8; -.
DR   SMR; Q07MP8; -.
DR   STRING; 316055.RPE_2849; -.
DR   EnsemblBacteria; ABJ06786; ABJ06786; RPE_2849.
DR   KEGG; rpe:RPE_2849; -.
DR   eggNOG; COG1612; Bacteria.
DR   HOGENOM; CLU_017627_0_0_5; -.
DR   OMA; YWWEWGH; -.
DR   OrthoDB; 1135592at2; -.
DR   UniPathway; UPA00269; UER00713.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0016653; F:oxidoreductase activity, acting on NAD(P)H, heme protein as acceptor; IEA:InterPro.
DR   GO; GO:0006784; P:heme A biosynthetic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01665; HemeA_synth_type2; 1.
DR   InterPro; IPR003780; COX15/CtaA_fam.
DR   InterPro; IPR023754; HemeA_Synthase_type2.
DR   PANTHER; PTHR23289; PTHR23289; 1.
DR   Pfam; PF02628; COX15-CtaA; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Heme biosynthesis; Iron; Membrane; Metal-binding;
KW   Oxidoreductase; Transmembrane; Transmembrane helix.
FT   CHAIN           1..362
FT                   /note="Heme A synthase"
FT                   /id="PRO_0000349067"
FT   TRANSMEM        12..32
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT   TRANSMEM        102..122
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT   TRANSMEM        128..148
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT   TRANSMEM        159..179
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT   TRANSMEM        198..218
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT   TRANSMEM        264..286
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT   TRANSMEM        291..311
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT   TRANSMEM        314..334
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01665"
FT   BINDING         262
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:0000255|HAMAP-Rule:MF_01665"
FT   BINDING         322
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:0000255|HAMAP-Rule:MF_01665"
SQ   SEQUENCE   362 AA;  39801 MW;  13F17A9DC5D4A194 CRC64;
     MPGSAAARPL RAVKIWLGAI AALIAAMVLV GGATRLTESG LSIVEWKPIT GTLPPLTDAQ
     WAQAFEGYKT IPQYRELNAG MSLSEFKTIF WWEWSHRLLG RVIGLAYLLP FLWFIWRGHL
     GGELKRRLWL IFGLGALQGA VGWWMVASGL SQRVEVAQER LAIHLTLALV IFAAIVWTLR
     RLDERPVGAV PLRLRITAAA LLALTFVQIF FGALVAGLRA GKLYNTWPTI DGALIPSAER
     LWFQEPWWRN LFDNHLTVQF DHRMLAYALW ALAIAHAIDA VRARAGAAAR GAVWFAAALT
     LQAALGIFTL LYEVPIGLAL AHQAVAVLVL MLGVLQLERL WPRASASAAN LPKSAMAAAS
     RN
 
 
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