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Protein

Cytochrome c-type protein NrfB

Gene

nrfB

Organism
Escherichia coli (strain K12)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Plays a role in nitrite reduction.

Pathwayi: nitrogen metabolism

This protein is involved in the pathway nitrogen metabolism, which is part of Energy metabolism.
View all proteins of this organism that are known to be involved in the pathway nitrogen metabolism and in Energy metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei49Heme 1 (covalent)By similarity1
Binding sitei52Heme 1 (covalent)By similarity1
Metal bindingi53Iron (heme 1 axial ligand)By similarity1
Binding sitei78Heme 2 (covalent)By similarity1
Binding sitei81Heme 2 (covalent)By similarity1
Metal bindingi82Iron (heme 2 axial ligand)By similarity1
Binding sitei113Heme 3 (covalent)By similarity1
Binding sitei116Heme 3 (covalent)By similarity1
Metal bindingi117Iron (heme 3 axial ligand)By similarity1
Binding sitei138Heme 4 (covalent)By similarity1
Binding sitei141Heme 4 (covalent)By similarity1
Metal bindingi142Iron (heme 4 axial ligand)By similarity1
Binding sitei163Heme 5 (covalent)By similarity1
Binding sitei166Heme 5 (covalent)By similarity1
Metal bindingi167Iron (heme 5 axial ligand)By similarity1

GO - Molecular functioni

  • electron transfer activity Source: EcoCyc
  • heme binding Source: EcoCyc
  • metal ion binding Source: UniProtKB-KW
  • nitrite reductase (cytochrome, ammonia-forming) activity Source: EcoCyc

GO - Biological processi

  • anaerobic electron transport chain Source: EcoCyc
  • nitrogen compound metabolic process Source: UniProtKB-UniPathway

Keywordsi

Biological processElectron transport, Transport
LigandHeme, Iron, Metal-binding

Enzyme and pathway databases

BioCyciEcoCyc:CYTOCHROMEC-MONOMER
MetaCyc:CYTOCHROMEC-MONOMER
UniPathwayiUPA00045

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome c-type protein NrfB
Gene namesi
Name:nrfB
Synonyms:yjcI
Ordered Locus Names:b4071, JW4032
OrganismiEscherichia coli (strain K12)
Taxonomic identifieri83333 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
Proteomesi
  • UP000000318 Componenti: Chromosome
  • UP000000625 Componenti: Chromosome

Organism-specific databases

EcoGeneiEG11945 nrfB

Subcellular locationi

GO - Cellular componenti

  • outer membrane-bounded periplasmic space Source: EcoCyc

Keywords - Cellular componenti

Periplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 32Sequence analysisAdd BLAST32
ChainiPRO_000000658533 – 188Cytochrome c-type protein NrfBAdd BLAST156

Post-translational modificationi

Binds 5 heme groups per subunit.By similarity

Proteomic databases

PaxDbiP0ABL1
PRIDEiP0ABL1

Interactioni

Protein-protein interaction databases

BioGridi4259404, 17 interactors
IntActiP0ABL1, 3 interactors
STRINGi316407.85676823

Structurei

Secondary structure

1188
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi46 – 49Combined sources4
Turni50 – 52Combined sources3
Turni55 – 57Combined sources3
Helixi63 – 65Combined sources3
Turni70 – 72Combined sources3
Beta strandi73 – 75Combined sources3
Helixi78 – 82Combined sources5
Helixi89 – 91Combined sources3
Beta strandi94 – 96Combined sources3
Beta strandi99 – 101Combined sources3
Helixi106 – 113Combined sources8
Turni114 – 116Combined sources3
Helixi119 – 125Combined sources7
Helixi129 – 132Combined sources4
Turni133 – 135Combined sources3
Helixi138 – 140Combined sources3
Beta strandi145 – 148Combined sources4
Helixi150 – 153Combined sources4
Helixi158 – 172Combined sources15

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2OZYX-ray1.74A26-188[»]
2P0BX-ray1.74A26-188[»]
ProteinModelPortaliP0ABL1
SMRiP0ABL1
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP0ABL1

Family & Domainsi

Keywords - Domaini

Signal

Phylogenomic databases

eggNOGiENOG4105JJ8 Bacteria
ENOG411128Q LUCA
HOGENOMiHOG000278525
InParanoidiP0ABL1
KOiK04013
OMAiDHREGAP
PhylomeDBiP0ABL1

Family and domain databases

InterProiView protein in InterPro
IPR023155 Cyt_c-552/4
IPR017564 Cyt_c_NO2Rdtase_pentahaem-su
IPR011031 Multihaem_cyt
IPR036280 Multihaem_cyt_sf
IPR010177 Paired_CXXCH_1
PfamiView protein in Pfam
PF13435 Cytochrome_C554, 1 hit
PF09699 Paired_CXXCH_1, 1 hit
SUPFAMiSSF48695 SSF48695, 1 hit
TIGRFAMsiTIGR03146 cyt_nit_nrfB, 1 hit
PROSITEiView protein in PROSITE
PS51008 MULTIHEME_CYTC, 1 hit

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P0ABL1-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSVLRSLLTA GVLASGLLWS LNGITATPAA QASDDRYEVT QQRNPDAACL
60 70 80 90 100
DCHKPDTEGM HGKHASVINP NNKLPVTCTN CHGQPSPQHR EGVKDVMRFN
110 120 130 140 150
EPMYKVGEQN SVCMSCHLPE QLQKAFWPHD VHVTKVACAS CHSLHPQQDT
160 170 180
MQTLSDKGRI KICVDCHSDQ RTNPNFNPAS VPLLKEQP
Length:188
Mass (Da):20,714
Last modified:November 8, 2005 - v1
Checksum:i33A354F20FAF1548
GO

Sequence cautioni

The sequence AAC43165 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened.Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X72298 Genomic DNA Translation: CAA51042.1
U00006 Genomic DNA Translation: AAC43165.1 Different initiation.
U00096 Genomic DNA Translation: AAC77041.2
AP009048 Genomic DNA Translation: BAE78073.1
RefSeqiNP_418495.2, NC_000913.3
WP_001295391.1, NZ_LN832404.1

Genome annotation databases

EnsemblBacteriaiAAC77041; AAC77041; b4071
BAE78073; BAE78073; BAE78073
GeneIDi948573
KEGGiecj:JW4032
eco:b4071
PATRICifig|1411691.4.peg.2633

Entry informationi

Entry nameiNRFB_ECOLI
AccessioniPrimary (citable) accession number: P0ABL1
Secondary accession number(s): P32707, P76790, Q2M6N3
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 8, 2005
Last sequence update: November 8, 2005
Last modified: March 28, 2018
This is version 95 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

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