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NAPA_CAMFF
ID   NAPA_CAMFF              Reviewed;         925 AA.
AC   A0RQ36;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   09-JAN-2007, sequence version 1.
DT   03-AUG-2022, entry version 100.
DE   RecName: Full=Periplasmic nitrate reductase {ECO:0000255|HAMAP-Rule:MF_01630};
DE            EC=1.9.6.1 {ECO:0000255|HAMAP-Rule:MF_01630};
DE   Flags: Precursor;
GN   Name=napA {ECO:0000255|HAMAP-Rule:MF_01630};
GN   OrderedLocusNames=CFF8240_1161;
OS   Campylobacter fetus subsp. fetus (strain 82-40).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Campylobacteraceae; Campylobacter.
OX   NCBI_TaxID=360106;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=82-40;
RA   Fouts D.E., Nelson K.E.;
RT   "Sequence of Campylobacter fetus subsp. fetus 82-40.";
RL   Submitted (NOV-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalytic subunit of the periplasmic nitrate reductase
CC       complex NapAB. Receives electrons from NapB and catalyzes the reduction
CC       of nitrate to nitrite. {ECO:0000255|HAMAP-Rule:MF_01630}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 Fe(II)-[cytochrome] + 2 H(+) + nitrate = 2 Fe(III)-
CC         [cytochrome] + H2O + nitrite; Xref=Rhea:RHEA:12909, Rhea:RHEA-
CC         COMP:11777, Rhea:RHEA-COMP:11778, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:16301, ChEBI:CHEBI:17632,
CC         ChEBI:CHEBI:29033, ChEBI:CHEBI:29034; EC=1.9.6.1;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01630};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01630};
CC       Note=Binds 1 [4Fe-4S] cluster. {ECO:0000255|HAMAP-Rule:MF_01630};
CC   -!- COFACTOR:
CC       Name=Mo-bis(molybdopterin guanine dinucleotide);
CC         Xref=ChEBI:CHEBI:60539; Evidence={ECO:0000255|HAMAP-Rule:MF_01630};
CC       Note=Binds 1 molybdenum-bis(molybdopterin guanine dinucleotide) (Mo-
CC       bis-MGD) cofactor per subunit. {ECO:0000255|HAMAP-Rule:MF_01630};
CC   -!- SUBUNIT: Component of the periplasmic nitrate reductase NapAB complex
CC       composed of NapA and NapB. {ECO:0000255|HAMAP-Rule:MF_01630}.
CC   -!- SUBCELLULAR LOCATION: Periplasm {ECO:0000255|HAMAP-Rule:MF_01630}.
CC   -!- PTM: Predicted to be exported by the Tat system. The position of the
CC       signal peptide cleavage has not been experimentally proven.
CC       {ECO:0000255|HAMAP-Rule:MF_01630}.
CC   -!- SIMILARITY: Belongs to the prokaryotic molybdopterin-containing
CC       oxidoreductase family. NasA/NapA/NarB subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_01630}.
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DR   EMBL; CP000487; ABK82549.1; -; Genomic_DNA.
DR   RefSeq; WP_011732100.1; NC_008599.1.
DR   AlphaFoldDB; A0RQ36; -.
DR   SMR; A0RQ36; -.
DR   STRING; 360106.CFF8240_1161; -.
DR   EnsemblBacteria; ABK82549; ABK82549; CFF8240_1161.
DR   GeneID; 61064986; -.
DR   KEGG; cff:CFF8240_1161; -.
DR   eggNOG; COG0243; Bacteria.
DR   HOGENOM; CLU_000422_13_4_7; -.
DR   OMA; KIVSFWT; -.
DR   OrthoDB; 323168at2; -.
DR   Proteomes; UP000000760; Chromosome.
DR   GO; GO:0042597; C:periplasmic space; IEA:UniProtKB-SubCell.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0009055; F:electron transfer activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0030151; F:molybdenum ion binding; IEA:InterPro.
DR   GO; GO:0043546; F:molybdopterin cofactor binding; IEA:InterPro.
DR   GO; GO:0050140; F:nitrate reductase (cytochrome) activity; IEA:UniProtKB-EC.
DR   GO; GO:0008940; F:nitrate reductase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006777; P:Mo-molybdopterin cofactor biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0042128; P:nitrate assimilation; IEA:UniProtKB-UniRule.
DR   CDD; cd02791; MopB_CT_Nitrate-R-NapA-like; 1.
DR   HAMAP; MF_01630; Nitrate_reduct_NapA; 1.
DR   InterPro; IPR009010; Asp_de-COase-like_dom_sf.
DR   InterPro; IPR041957; CT_Nitrate-R-NapA-like.
DR   InterPro; IPR006657; MoPterin_dinucl-bd_dom.
DR   InterPro; IPR006656; Mopterin_OxRdtase.
DR   InterPro; IPR006963; Mopterin_OxRdtase_4Fe-4S_dom.
DR   InterPro; IPR027467; MopterinOxRdtase_cofactor_BS.
DR   InterPro; IPR010051; Periplasm_NO3_reductase_lsu.
DR   InterPro; IPR006311; TAT_signal.
DR   Pfam; PF04879; Molybdop_Fe4S4; 1.
DR   Pfam; PF00384; Molybdopterin; 1.
DR   Pfam; PF01568; Molydop_binding; 1.
DR   SMART; SM00926; Molybdop_Fe4S4; 1.
DR   SUPFAM; SSF50692; SSF50692; 1.
DR   TIGRFAMs; TIGR01706; NAPA; 1.
DR   PROSITE; PS51669; 4FE4S_MOW_BIS_MGD; 1.
DR   PROSITE; PS00551; MOLYBDOPTERIN_PROK_1; 1.
DR   PROSITE; PS51318; TAT; 1.
PE   3: Inferred from homology;
KW   4Fe-4S; Electron transport; Iron; Iron-sulfur; Metal-binding; Molybdenum;
KW   Nitrate assimilation; Oxidoreductase; Periplasm; Signal; Transport.
FT   SIGNAL          1..30
FT                   /note="Tat-type signal"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   CHAIN           31..925
FT                   /note="Periplasmic nitrate reductase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT                   /id="PRO_1000069712"
FT   DOMAIN          36..92
FT                   /note="4Fe-4S Mo/W bis-MGD-type"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         43
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         46
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         50
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         78
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         80
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         148
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         173
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         177
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         210..217
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         418
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         422
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         528
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         553..554
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         576
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         603
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         815..824
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         891
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         899
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         916
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
SQ   SEQUENCE   925 AA;  104255 MW;  6421C720F2CE60BB CRC64;
     MDRREFIKSS AAAAACSAAG IAVPSSLSAA ENQDGWRWDK SACRFCGTGC GIMVATKNGK
     IVAVKGDPLA PVNRGLNCIK GYFNAKIMYG EDRITKPLLR VNANGEFDKK GKFQEVSWKR
     AFDEMEKQFR KTYAELGPTG IGVFGSGQYT IQEGYAISKL IKGGFRSHNI DPNARHCMAS
     AVVGFMQTFG IDEPAGCYDD IELTDTIVTW GANMAEMHPI LWSRVSDRKL QNSDKVKVVN
     LSTYSTRTSN IADIEIIFTP HTDLAIWNYI AREIVYNHPE AIDEEFVKAN CVFTTGPVDI
     GYGMRANIKH PKYLPSELDT AAKEKSTVLS ENEGVTLAYL GMKAGDTLEN KSTGAPDKHW
     IIQYEDFKKA LAPYTLDFVA KLAKGDPNED LEEFKKKLKA LADLYIEKNR KVVSFWTMGM
     NQHTRGVWVN EQSYMVHFLL GKQAKPGSGA FSLTGQPSAC GTAREVGTFS HRLPADMVVA
     NPKHREITEK IWKIPAGTIN PKPGAPYMKI MRDLEDGKVK FVWVHVNNPW QNSANANHWI
     KAAREMDNFI VVSDPYPGIS AKVGDLILPT AMIYEKWGAY GNAERRTQHW RQQVLPVGDA
     MSDTWQYMEF AKRFKLKDFW GEVKVDGKLT LPNVLDKAVA MGYNPENTLF EVLFANKSAM
     KFSSDDKIMA GYDNTEVFGD SRNVVGSDGN VFKGYGFFVQ KYLWEEYREF GLGHGHDLAD
     FDTYHKVRGL RWPVVDGKET LWRFNTKYDV YAKKDNPNGD FSFYGNKNGA LVTGDLAKAT
     SKEKEALKSR AKIFFRPYMD PPEMPSKDYP LWLCTGRVLE HWHSGTMTMR VPELYRAVPE
     ALCFMNEIDG NKFGIKQNDI IWVESRRGKV KARVDFRGRN KPAEGLIYVP WFDENVFINK
     VCLDATDPLS KQTDFKKCAV KIYKA
 
 
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