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Protein

Periplasmic nitrate reductase

Gene

napA

Organism
Escherichia coli TA054
Status
Unreviewed-Annotation score: -Protein inferred from homologyi

Functioni

Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite.UniRule annotationSAAS annotation

Caution

The sequence shown here is derived from an EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is preliminary data.Imported

Catalytic activityi

2 ferrocytochrome + nitrate + 2 H+ = 2 ferricytochrome + nitrite.UniRule annotationSAAS annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi46Iron-sulfur (4Fe-4S)UniRule annotation1
Metal bindingi49Iron-sulfur (4Fe-4S)UniRule annotation1
Metal bindingi53Iron-sulfur (4Fe-4S)UniRule annotation1
Metal bindingi81Iron-sulfur (4Fe-4S)UniRule annotation1
Binding sitei83Mo-bis(molybdopterin guanine dinucleotide)UniRule annotation1
Binding sitei150Mo-bis(molybdopterin guanine dinucleotide)UniRule annotation1
Binding sitei175Mo-bis(molybdopterin guanine dinucleotide)UniRule annotation1
Binding sitei179Mo-bis(molybdopterin guanine dinucleotide)UniRule annotation1
Binding sitei372Mo-bis(molybdopterin guanine dinucleotide); via amide nitrogenUniRule annotation1
Binding sitei376Mo-bis(molybdopterin guanine dinucleotide)UniRule annotation1
Binding sitei482Mo-bis(molybdopterin guanine dinucleotide); via amide nitrogenUniRule annotation1
Binding sitei531Mo-bis(molybdopterin guanine dinucleotide)UniRule annotation1
Binding sitei558Mo-bis(molybdopterin guanine dinucleotide)UniRule annotation1
Binding sitei794Substrate; via amide nitrogenUniRule annotation1
Binding sitei802Mo-bis(molybdopterin guanine dinucleotide)UniRule annotation1
Binding sitei819Mo-bis(molybdopterin guanine dinucleotide)UniRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionOxidoreductaseUniRule annotationSAAS annotation
Biological processElectron transportUniRule annotationSAAS annotation, Nitrate assimilationUniRule annotationSAAS annotation, Transport
Ligand4Fe-4SUniRule annotationSAAS annotation, Iron, Iron-sulfur, Metal-binding, MolybdenumUniRule annotationSAAS annotation

Names & Taxonomyi

Protein namesi
Recommended name:
Periplasmic nitrate reductaseUniRule annotation (EC:1.9.6.1UniRule annotation)
Gene namesi
Name:napAUniRule annotation
ORF Names:EAXG_01788Imported
OrganismiEscherichia coli TA054Imported
Taxonomic identifieri656433 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
Proteomesi
  • UP000193131 Componenti: Unassembled WGS sequence

Subcellular locationi

  • Periplasm UniRule annotationSAAS annotation

GO - Cellular componenti

Keywords - Cellular componenti

PeriplasmUniRule annotation

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 31Sequence analysisAdd BLAST31
ChainiPRO_501086463932 – 828Periplasmic nitrate reductaseSequence analysisAdd BLAST797

Post-translational modificationi

Predicted to be exported by the Tat system. The position of the signal peptide cleavage has not been experimentally proven.UniRule annotation

Interactioni

Subunit structurei

Component of the periplasmic nitrate reductase NapAB complex composed of NapA and NapB.UniRule annotationSAAS annotation

Structurei

3D structure databases

SMRiA0A1X3LLK8
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini39 – 954Fe-4S Mo/W bis-MGD-typeInterPro annotationAdd BLAST57

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni212 – 219Mo-bis(molybdopterin guanine dinucleotide) bindingUniRule annotation8
Regioni243 – 247Mo-bis(molybdopterin guanine dinucleotide) bindingUniRule annotation5
Regioni262 – 264Mo-bis(molybdopterin guanine dinucleotide) bindingUniRule annotation3
Regioni508 – 509Mo-bis(molybdopterin guanine dinucleotide) bindingUniRule annotation2
Regioni718 – 727Mo-bis(molybdopterin guanine dinucleotide) bindingUniRule annotation10

Sequence similaritiesi

Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily.SAAS annotation

Keywords - Domaini

SignalUniRule annotation

Family and domain databases

HAMAPiMF_01630 Nitrate_reduct_NapA, 1 hit
InterProiView protein in InterPro
IPR009010 Asp_de-COase-like_dom_sf
IPR006657 MoPterin_dinucl-bd_dom
IPR006656 Mopterin_OxRdtase
IPR006963 Mopterin_OxRdtase_4Fe-4S_dom
IPR027467 MopterinOxRdtase_cofactor_BS
IPR010051 Periplasm_NO3_reductase_lsu
IPR006311 TAT_signal
IPR019546 TAT_signal_bac_arc
PANTHERiPTHR11615:SF123 PTHR11615:SF123, 1 hit
PfamiView protein in Pfam
PF04879 Molybdop_Fe4S4, 1 hit
PF00384 Molybdopterin, 1 hit
PF01568 Molydop_binding, 1 hit
SMARTiView protein in SMART
SM00926 Molybdop_Fe4S4, 1 hit
SUPFAMiSSF50692 SSF50692, 1 hit
TIGRFAMsiTIGR01706 NAPA, 1 hit
TIGR01409 TAT_signal_seq, 1 hit
PROSITEiView protein in PROSITE
PS51669 4FE4S_MOW_BIS_MGD, 1 hit
PS00551 MOLYBDOPTERIN_PROK_1, 1 hit
PS51318 TAT, 1 hit

Sequencei

Sequence statusi: Complete.

A0A1X3LLK8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKLSRRSFMK ANAVAAAAAA AGLSVPGVAR AVVGQQEAIK WDKAPCRFCG
60 70 80 90 100
TGCGVLVGTQ QGRVVACQGD PDAPVNRGLN CIKGYFLPKI MYGKDRLTQP
110 120 130 140 150
LLRMKNGKYD KEGEFTPITW DQAFDVMEEK FKTALKEKGP ESIGMFGSGQ
160 170 180 190 200
WTIWEGYAAS KLFKAGFRSN NIDPNARHCM ASAVVGFMRT FGMDEPMGCY
210 220 230 240 250
DDIEQADAFV LWGANMAEMH PILWSRITNR RLSNQDVTVA VLSTYQHRSF
260 270 280 290 300
ELADNGIIFT PQSDLVILNY IANYIIQNNA INQDFFSKHV NLRKGATDIG
310 320 330 340 350
YGLRPTHPLE KAAKNPGSDA SEPMSFEDYK AFVAEYTLEK TAEMTGVPKD
360 370 380 390 400
QLEQLAQLYA DPNKKVISYW TMGFNQHTRG VWANNLVYNL HLLTGKISQP
410 420 430 440 450
GCGPFSLTGQ PSACGTAREV GTFAHRLPAD MVVTNEKHRD ICEKKWNIPS
460 470 480 490 500
GTIPAKIGLH AVAQDRALKD GKLNVYWTMC TNNMQAGPNI NEERMPGWRD
510 520 530 540 550
PRNFIIVSDP YPTVSALAAD LILPTAMWVE KEGAYGNAER RTQFWRQQVQ
560 570 580 590 600
APGEAKSDLW QLVQFSRRFK TEEVWPEELL AKKPELRGKT LYEVLYATPE
610 620 630 640 650
VSKFPVSELA EDQLNDESRE LGFYLQKGLF EEYAWFGRGH GHDLAPFDDY
660 670 680 690 700
HKARGLRWPV VNGKETQWRY SEGNDPYVKA GEGYKFYGKP DGKAVIFALP
710 720 730 740 750
FEPAAEAPDE EYDLWLSTGR VLEHWHTGSM TRRVPELHRA FPEAVLFIHP
760 770 780 790 800
LDAKARDLRR GDKVKVVSRR GEVISIVETR GRNRPPQGLV YMPFFDAAQL
810 820
VNKLTLDATD PLSKETDFKK CAVKLEKV
Length:828
Mass (Da):93,057
Last modified:July 5, 2017 - v1
Checksum:i967121CB05C59323
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
ADKB01000005 Genomic DNA Translation: OSL75253.1
RefSeqiWP_000778047.1, NZ_ADKB01000005.1

Similar proteinsi

Entry informationi

Entry nameiA0A1X3LLK8_ECOLX
AccessioniPrimary (citable) accession number: A0A1X3LLK8
Entry historyiIntegrated into UniProtKB/TrEMBL: July 5, 2017
Last sequence update: July 5, 2017
Last modified: May 23, 2018
This is version 9 of the entry and version 1 of the sequence. See complete history.
Entry statusiUnreviewed (UniProtKB/TrEMBL)

Miscellaneousi

Keywords - Technical termi

Complete proteomeImported

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