ID   NAPA_PARXL              Reviewed;         827 AA.
AC   Q13I15;
DT   31-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT   22-AUG-2006, sequence version 1.
DT   27-MAR-2024, entry version 112.
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=Bxeno_C0346; ORFNames=Bxe_C0367;
OS   Paraburkholderia xenovorans (strain LB400).
OC   Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales;
OC   Burkholderiaceae; Paraburkholderia.
OX   NCBI_TaxID=266265;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=LB400;
RX   PubMed=17030797; DOI=10.1073/pnas.0606924103;
RA   Chain P.S.G., Denef V.J., Konstantinidis K.T., Vergez L.M., Agullo L.,
RA   Reyes V.L., Hauser L., Cordova M., Gomez L., Gonzalez M., Land M., Lao V.,
RA   Larimer F., LiPuma J.J., Mahenthiralingam E., Malfatti S.A., Marx C.J.,
RA   Parnell J.J., Ramette A., Richardson P., Seeger M., Smith D., Spilker T.,
RA   Sul W.J., Tsoi T.V., Ulrich L.E., Zhulin I.B., Tiedje J.M.;
RT   "Burkholderia xenovorans LB400 harbors a multi-replicon, 9.73-Mbp genome
RT   shaped for versatility.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:15280-15287(2006).
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; CP000272; ABE36274.1; -; Genomic_DNA.
DR   RefSeq; WP_011493534.1; NZ_CP008761.1.
DR   AlphaFoldDB; Q13I15; -.
DR   SMR; Q13I15; -.
DR   STRING; 266265.Bxe_C0367; -.
DR   KEGG; bxb:DR64_8074; -.
DR   KEGG; bxe:Bxe_C0367; -.
DR   PATRIC; fig|266265.5.peg.8136; -.
DR   eggNOG; COG0243; Bacteria.
DR   OrthoDB; 7376058at2; -.
DR   Proteomes; UP000001817; Chromosome 3.
DR   GO; GO:1990204; C:oxidoreductase complex; IEA:UniProt.
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:0045333; P:cellular respiration; IEA:UniProt.
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   CDD; cd02754; MopB_Nitrate-R-NapA-like; 1.
DR   Gene3D; 2.40.40.20; -; 1.
DR   Gene3D; 3.30.200.210; -; 1.
DR   Gene3D; 3.40.50.740; -; 1.
DR   Gene3D; 3.40.228.10; Dimethylsulfoxide Reductase, domain 2; 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   InterPro; IPR019546; TAT_signal_bac_arc.
DR   NCBIfam; TIGR01706; NAPA; 1.
DR   NCBIfam; TIGR01409; TAT_signal_seq; 1.
DR   PANTHER; PTHR43105:SF11; PERIPLASMIC NITRATE REDUCTASE; 1.
DR   PANTHER; PTHR43105; RESPIRATORY NITRATE REDUCTASE; 1.
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; ADC-like; 1.
DR   SUPFAM; SSF53706; Formate dehydrogenase/DMSO reductase, domains 1-3; 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..32
FT                   /note="Tat-type signal"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   CHAIN           33..827
FT                   /note="Periplasmic nitrate reductase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT                   /id="PRO_0000256070"
FT   DOMAIN          37..93
FT                   /note="4Fe-4S Mo/W bis-MGD-type"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         44
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         47
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         51
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         79
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         81
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         241..245
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         260..262
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         371
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         375
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         481
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         507..508
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         530
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         557
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         717..726
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         793
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         801
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
FT   BINDING         818
FT                   /ligand="Mo-bis(molybdopterin guanine dinucleotide)"
FT                   /ligand_id="ChEBI:CHEBI:60539"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01630"
SQ   SEQUENCE   827 AA;  92597 MW;  3B9D6FE05EE4C769 CRC64;
     MTLSRRAFIK QTAAATAASA AGVVLPGVDA LAASDSLTWS KAPCRFCGTG CGVSVGVKNG
     KVVATQGDPQ AEVNRGLNCV KGYFLSKIMY GQDRLTTPLL RMKDGKYAKD GEFAPVSWDQ
     AFDVMADHFK RTLKEKGPTA VGMFGSGQWT VWEGYAAVKL MKAGFRSNNL DPNARHCMAS
     AVTGFMRTFG MDEPMGCYDD IEQADTFVLW GSNMSEMHPI LWTRITDRRL STPTTRVVVL
     STFEHRSFDL ADQTIIFTPQ SDLAILNYIA NYIIRNGNVN RDFVNRHTVF KQGNADIGYG
     LRPDNPLQKT ARNAGDPNGS QPITFDEFAK FVSKYDAAYV TKLSGVPQNK LDQLARLYAD
     PKVKVMSFWT MGFNQHTRGT WANNMVYNLH LLTGKIATPG NSPFSLTGQP SACGTAREVG
     TFSHRLPADM VVTNPKHREE AEHIWKLPAG TIPDKPGYHA VLQNRMLRDG KLNAYWVQVN
     NNVQAAANIN GEALPGYRNP QAFVVVSDVY PTVTAVAADL ILPSAMWVEK EGAYGNAERR
     TQFWHQLVDA PAGARSDLWQ LVEFSKRFKV EEVWPADLLA KKPEYRGKTL YDVLYRNGQV
     DRFALTETDS HYRNDEAKAF GFYIQKGLFE EYASFGRGHG HDLAPFDAYH KARGLRWPVV
     NGKETRWRYK EGSDPYVKTG TGWQFYGNPD GRAVIYALPY EPPPEVPDKE YPFWLATGRV
     LEHWHSGSMT RRVPELYRAF PNAVCFMHPD DAKAMGVRRG VEVKVMSRRG YILTRVETRG
     RDKPPRGLVF VPWFDSSQLI NKVTLDATDP ISLQTDYKKC AVKIVKV
//