Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Due to a server migration, the UniProt 'ID mapping', 'Peptide search' and 'community bibliography submission' tools will not be available on the 19th April 2021 during the morning (EST).

UniProtKB - P19067 (NIFK_SINFN)

Entry version 140 (07 Apr 2021)
Sequence version 2 (01 Nov 1997)
Previous versions | rss
Add a publicationFeedback
Protein

Nitrogenase molybdenum-iron protein beta chain

Gene

nifK1

more
Organism
Sinorhizobium fredii (strain NBRC 101917 / NGR234)
Status
Reviewed-Annotation score:

Annotation score:4 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>-Protein inferred from homologyi <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

This molybdenum-iron protein is part of the nitrogenase complex that catalyzes the key enzymatic reactions in nitrogen fixation.

Miscellaneous

Ala-188 is present instead of the usual Ser that would serve as a ligand for the 8Fe-7S cluster in the oxidized state.

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the 'Function' section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

[8Fe-7S] clusterBy similarityNote: Binds 1 [8Fe-7S] cluster per heterodimer.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi70Iron-sulfur (8Fe-7S); shared with alpha chainBy similarity1
Metal bindingi95Iron-sulfur (8Fe-7S); shared with alpha chainBy similarity1
Metal bindingi153Iron-sulfur (8Fe-7S); shared with alpha chainBy similarity1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionOxidoreductase
Biological processNitrogen fixation
LigandATP-binding, Iron, Iron-sulfur, Metal-binding, Nucleotide-binding

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Nitrogenase molybdenum-iron protein beta chain (EC:1.18.6.1)
Alternative name(s):
Dinitrogenase
Nitrogenase component I
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:nifK1
Ordered Locus Names:NGR_a01110
ORF Names:y4vM
AND
Name:nifK2
Ordered Locus Names:NGR_a00870
ORF Names:y4xC
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates if the gene coding for the protein originates from the hydrogenosome, the mitochondrion, the nucleomorph, different plastids or a plasmid. The absence of this section means that the gene is located in one of the main chromosomal element(s).<p><a href='/help/encoded_on' target='_top'>More...</a></p>Encoded oniPlasmid sym pNGR234a
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiSinorhizobium fredii (strain NBRC 101917 / NGR234)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri394 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteria › Proteobacteria › Alphaproteobacteria › Rhizobiales › Rhizobiaceae › Sinorhizobium/Ensifer group › Sinorhizobium ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000001054 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Plasmid sym pNGR234a

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001531071 – 513Nitrogenase molybdenum-iron protein beta chainAdd BLAST513

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Tetramer of two alpha and two beta chains. Forms complex with the iron protein (nitrogenase component 2).

Protein-protein interaction databases

STRING: functional protein association networks

More...STRINGi		394.NGR_a01110

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		P19067

Database of comparative protein structure models

More...ModBasei		Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the NifD/NifK/NifE/NifN family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		COG2710, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_025876_2_0_5

Identification of Orthologs from Complete Genome Data

More...OMAi		GLNNMID

Database of Orthologous Groups

More...OrthoDBi		397330at2

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR000510, Nase/OxRdtase_comp1
IPR000318, Nase_comp1_CS
IPR005976, Nase_Mo-Fe_CF_bsu
IPR024564, Nase_Mo-Fe_CF_bsu_N

Pfam protein domain database

More...Pfami		View protein in Pfam
PF11844, DUF3364, 1 hit
PF00148, Oxidored_nitro, 1 hit

TIGRFAMs; a protein family database

More...TIGRFAMsi		TIGR01286, nifK, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00699, NITROGENASE_1_1, 1 hit
PS00090, NITROGENASE_1_2, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P19067-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MPQSAEKILD HAPLFREPEY RQMLAEKKLN FECPHPERLV TDQREYSKGW 
        60         70         80         90        100
EYREKNLARE ALVVNPAKAC QPLGAVFAAA GFERTMSFVH GSQGCVAYYR 
       110        120        130        140        150
SHLSRHFKEP ASAVSSSMTE DAAVFGGLKN MVDGLANTYA LYDPKMIAVS 
       160        170        180        190        200
TTCMAEVIGD DLHGFIENAK SEGAVPPEFD VPFAHTPAFV GSHVDGYDSM 
       210        220        230        240        250
VKGILEHFWK GQARTQAAGT INIIPGFDGF CVGNNRELQR LLTLMGVSYT 
       260        270        280        290        300
FIQDASDQFD TPSDGEYRMY DGGTTIKALR AALNAEATLS LQHYNSRKTL 
       310        320        330        340        350
EYCREVGQAT AAFHYPLGIN ATDAFLMKVS AISGREIPET IRLERGRLVD 
       360        370        380        390        400
AMADSQSWLH GKTYAIYGDP DFVYAMARFV METGGEPRHC LATNGTAAWQ 
       410        420        430        440        450
AEMTELLASS PFGKQAKVWP GKDLWALRSL LFTEPVDLLI GNSYGKYLER 
       460        470        480        490        500
DTGTPLIRLM FPIFDRHHHH RFPLMGYQGG LRLLTTILDT IFDRLDRETM 
       510 
QTAVTDYSYD LTR
Length:513
Mass (Da):57,302
Last modified:November 1, 1997 - v2
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i41631040335541AE
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...EMBLi

GenBank nucleotide sequence database

More...GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...DDBJi
Links Updated
U00090 Genomic DNA Translation: AAB91901.1
U00090 Genomic DNA Translation: AAB91925.1
M26963 Genomic DNA Translation: AAA26327.1

Protein sequence database of the Protein Information Resource

More...PIRi		PS0046
T10830

NCBI Reference Sequences

More...RefSeqi		NP_444114.1, NC_000914.2
NP_444138.1, NC_000914.2
WP_010875128.1, NC_000914.2

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		AAB91901; AAB91901; NGR_a00870
AAB91925; AAB91925; NGR_a01110

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		rhi:NGR_a00870
rhi:NGR_a01110

Pathosystems Resource Integration Center (PATRIC)

More...PATRICi		fig|394.7.peg.76

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U00090 Genomic DNA Translation: AAB91901.1
U00090 Genomic DNA Translation: AAB91925.1
M26963 Genomic DNA Translation: AAA26327.1
PIRiPS0046
T10830
RefSeqiNP_444114.1, NC_000914.2
NP_444138.1, NC_000914.2
WP_010875128.1, NC_000914.2

3D structure databases

SMRiP19067
ModBaseiSearch...

Protein-protein interaction databases

STRINGi394.NGR_a01110

Genome annotation databases

EnsemblBacteriaiAAB91901; AAB91901; NGR_a00870
AAB91925; AAB91925; NGR_a01110
KEGGirhi:NGR_a00870
rhi:NGR_a01110
PATRICifig|394.7.peg.76

Phylogenomic databases

eggNOGiCOG2710, Bacteria
HOGENOMiCLU_025876_2_0_5
OMAiGLNNMID
OrthoDBi397330at2

Family and domain databases

InterProiView protein in InterPro
IPR000510, Nase/OxRdtase_comp1
IPR000318, Nase_comp1_CS
IPR005976, Nase_Mo-Fe_CF_bsu
IPR024564, Nase_Mo-Fe_CF_bsu_N
PfamiView protein in Pfam
PF11844, DUF3364, 1 hit
PF00148, Oxidored_nitro, 1 hit
TIGRFAMsiTIGR01286, nifK, 1 hit
PROSITEiView protein in PROSITE
PS00699, NITROGENASE_1_1, 1 hit
PS00090, NITROGENASE_1_2, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...ProtoNeti		Search...

MobiDB: a database of protein disorder and mobility annotations

More...MobiDBi		Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiNIFK_SINFN
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P19067
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 1, 1990
Last sequence update: November 1, 1997
Last modified: April 7, 2021
This is version 140 of the entry and version 2 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Plasmid

Documents

  1. SIMILARITY comments
    Index of protein domains and families
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again