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UniProtKB - B2IV87 (B2IV87_NOSP7)

Entry version 75 (16 Oct 2019)
Sequence version 1 (10 Jun 2008)
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Protein

Nitrogenase iron protein

Gene

nifH

Organism
Nostoc punctiforme (strain ATCC 29133 / PCC 73102)
Status
Unreviewed-Annotation score:

Annotation score:3 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

The key enzymatic reactions in nitrogen fixation are catalyzed by the nitrogenase complex, which has 2 components: the iron protein and the molybdenum-iron protein.UniRule annotation

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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

[4Fe-4S] clusterUniRule annotationNote: Binds 1 [4Fe-4S] cluster per dimer.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 bindingi101Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation1
Metal bindingi135Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi13 – 20ATPUniRule annotation8

<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 functionOxidoreductaseUniRule annotationSAAS annotationImported
Biological processNitrogen fixationUniRule annotationSAAS annotation
Ligand4Fe-4SUniRule annotationSAAS annotation, ATP-bindingUniRule annotationSAAS annotation, Iron, Iron-sulfur, Metal-binding, Nucleotide-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...BioCyci		NPUN63737:G1GBR-1063-MONOMER

<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_and_taxonomy_section">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 iron proteinUniRule annotation (EC:1.18.6.1UniRule annotation)
Alternative name(s):
Nitrogenase Fe proteinUniRule annotation
Nitrogenase component IIUniRule annotation
Nitrogenase reductaseUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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:nifHUniRule annotation
Ordered Locus Names:Npun_R1035Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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>OrganismiNostoc punctiforme (strain ATCC 29133 / PCC 73102)Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 identifieri63737 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 › Cyanobacteria › Nostocales › Nostocaceae › Nostoc ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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
  • UP000001191 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">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: Chromosome

<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

GO - Cellular componenti

Complete GO annotation on QuickGO ...

<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

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei104ADP-ribosylarginine; by dinitrogenase reductase ADP-ribosyltransferaseUniRule annotation1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

The reversible ADP-ribosylation of Arg inactivates the nitrogenase reductase and regulates nitrogenase activity.UniRule annotation
The reversible ADP-ribosylation of Arg-104 inactivates the nitrogenase reductase and regulates nitrogenase activity.UniRule annotation

Keywords - PTMi

ADP-ribosylationUniRule annotation

<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_section">'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_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homodimer.

UniRule annotationSAAS annotation

Protein-protein interaction databases

STRING: functional protein association networks

More...STRINGi		63737.Npun_R1035

<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 NifH/BchL/ChlL family.UniRule annotationSAAS annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		ENOG4105DSM Bacteria
COG1348 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		HOG000228826

KEGG Orthology (KO)

More...KOi		K02588

Database of Orthologous Groups

More...OrthoDBi		729012at2

Database for complete collections of gene phylogenies

More...PhylomeDBi		B2IV87

Family and domain databases

HAMAP database of protein families

More...HAMAPi		MF_00533 NifH, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR030655 NifH/chlL_CS
IPR000392 NifH/frxC
IPR005977 Nitrogenase_Fe_NifH
IPR027417 P-loop_NTPase

The PANTHER Classification System

More...PANTHERi		PTHR42864 PTHR42864, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00142 Fer4_NifH, 1 hit

PIRSF; a whole-protein classification database

More...PIRSFi		PIRSF000363 Nitrogenase_iron, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF52540 SSF52540, 1 hit

TIGRFAMs; a protein family database

More...TIGRFAMsi		TIGR01287 nifH, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00746 NIFH_FRXC_1, 1 hit
PS00692 NIFH_FRXC_2, 1 hit
PS51026 NIFH_FRXC_3, 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_length">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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.

B2IV87-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTDEKIRQIA FYGKGGIGKS TTSQNTLAAM AEMGQRILIV GCDPKADSTR 
        60         70         80         90        100
LMLHSKAQTS VLQLAAERGA VEDIELEEVM LTGFRDVRCV ESGGPEPGVG 
       110        120        130        140        150
CAGRGIITAI NFLEENGAYK DVDFVSYDVL GDVVCGGFAM PIREGKAQEI 
       160        170        180        190        200
YIVTSGEMMA MYAANNIARG VLKYAHTGGV RLGGLICNSR NVDREIDLIE 
       210        220        230        240        250
TLAKRLNTQM IHYVPRDNIV QHAELRRMTV NEYAPDSNQS NEYRILAKKI 
       260        270        280        290 
IDNDKLAVPT PIEMEELEEL LIEFGILESD ENTAMLVGKT ATEAPVK
Length:297
Mass (Da):32,506
Last modified:June 10, 2008 - v1
<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:i0B5A0B1415315485
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
CP001037 Genomic DNA Translation: ACC79763.1

NCBI Reference Sequences

More...RefSeqi		WP_012407784.1, NC_010628.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		ACC79763; ACC79763; Npun_R1035

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		npu:Npun_R1035

<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
CP001037 Genomic DNA Translation: ACC79763.1
RefSeqiWP_012407784.1, NC_010628.1

3D structure databases

Database of comparative protein structure models

More...ModBasei		Search...

SWISS-MODEL Interactive Workspace

More...SWISS-MODEL-Workspacei		Submit a new modelling project...

Protein-protein interaction databases

STRINGi63737.Npun_R1035

Genome annotation databases

EnsemblBacteriaiACC79763; ACC79763; Npun_R1035
KEGGinpu:Npun_R1035

Phylogenomic databases

eggNOGiENOG4105DSM Bacteria
COG1348 LUCA
HOGENOMiHOG000228826
KOiK02588
OrthoDBi729012at2
PhylomeDBiB2IV87

Enzyme and pathway databases

BioCyciNPUN63737:G1GBR-1063-MONOMER

Family and domain databases

HAMAPiMF_00533 NifH, 1 hit
InterProiView protein in InterPro
IPR030655 NifH/chlL_CS
IPR000392 NifH/frxC
IPR005977 Nitrogenase_Fe_NifH
IPR027417 P-loop_NTPase
PANTHERiPTHR42864 PTHR42864, 1 hit
PfamiView protein in Pfam
PF00142 Fer4_NifH, 1 hit
PIRSFiPIRSF000363 Nitrogenase_iron, 1 hit
SUPFAMiSSF52540 SSF52540, 1 hit
TIGRFAMsiTIGR01287 nifH, 1 hit
PROSITEiView protein in PROSITE
PS00746 NIFH_FRXC_1, 1 hit
PS00692 NIFH_FRXC_2, 1 hit
PS51026 NIFH_FRXC_3, 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 nameiB2IV87_NOSP7
<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: B2IV87
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/TrEMBL: June 10, 2008
Last sequence update: June 10, 2008
Last modified: October 16, 2019
This is version 75 of the entry and version 1 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 statusiUnreviewed (UniProtKB/TrEMBL)

<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

Complete proteome, Reference proteomeImported
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Main funding by: National Institutes of Health

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