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UniProtKB - P16855 (VNFD_AZOVI)

Entry version 90 (07 Apr 2021)
Sequence version 2 (23 Jan 2007)
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Protein

Nitrogenase vanadium-iron protein alpha chain

Gene

vnfD

Organism
Azotobacter vinelandii
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>-Experimental evidence at protein leveli <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 vanadium-iron protein is part of the nitrogenase complex that catalyzes the key enzymatic reactions in nitrogen fixation.

Miscellaneous

The structure of the 7Fe-V-9S-C-homocitryl cluster is assumed to be analogous to the 7Fe-Mo-9S-C-homocitryl cluster.

<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

Protein has several cofactor binding sites:

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 bindingi49Iron-sulfur (8Fe-7S); shared with beta chainBy similarity1
Metal bindingi75Iron-sulfur (8Fe-7S); shared with beta chainBy similarity1
Metal bindingi138Iron-sulfur (8Fe-7S); shared with beta chainBy similarity1
Metal bindingi257Vanadium-iron-sulfur-carbon (7Fe-V-9S-C-homocitryl)By similarity1
Metal bindingi423Vanadium-iron-sulfur-carbon (7Fe-V-9S-C-homocitryl); via pros nitrogenBy 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, Vanadium

<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 vanadium-iron protein alpha chain (EC:1.18.6.1)
Alternative name(s):
Dinitrogenase 2 subunit alpha
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:vnfD
<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>OrganismiAzotobacter vinelandii
<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 identifieri354 [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 › Gammaproteobacteria › Pseudomonadales › Pseudomonadaceae › Azotobacter

<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 <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section indicates that the initiator methionine is cleaved from the mature protein.<p><a href='/help/init_met' target='_top'>More...</a></p>Initiator methionineiRemoved
<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_00001530602 – 474Nitrogenase vanadium-iron protein alpha chainAdd BLAST473

<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

Hexamer of two alpha, two beta, and two delta chains.

Protein-protein interaction databases

Database of interacting proteins

More...DIPi		DIP-48893N

Protein interaction database and analysis system

More...IntActi		P16855, 2 interactors

<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

Secondary structure

1474
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

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

More...SMRi		P16855

Database of comparative protein structure models

More...ModBasei		Search...

Protein Data Bank in Europe - Knowledge Base

More...PDBe-KBi		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

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR000510, Nase/OxRdtase_comp1
IPR005974, Nase_asu
IPR010143, Nase_comp1_asu
IPR000318, Nase_comp1_CS
IPR010142, Nase_V-Fe_asu

The PANTHER Classification System

More...PANTHERi		PTHR43457, PTHR43457, 1 hit

Pfam protein domain database

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

TIGRFAMs; a protein family database

More...TIGRFAMsi		TIGR01284, alt_nitrog_alph, 1 hit
TIGR01862, N2-ase-Ialpha, 1 hit
TIGR01860, VNFD, 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.

<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 in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

P16855-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MPMVLLECDK DIPERQKHIY LKAPNEDTRE FLPIANAATI PGTLSERGCA 
        60         70         80         90        100
FCGAKLVIGG VLKDTIQMIH GPLGCAYDTW HTKRYPTDNG HFNMKYVWST 
       110        120        130        140        150
DMKESHVVFG GEKRLEKSMH EAFDEMPDIK RMIVYTTCPT ALIGDDIKAV 
       160        170        180        190        200
AKKVMKDRPD VDVFTVECPG FSGVSQSKGH HVLNIGWINE KVETMEKEIT 
       210        220        230        240        250
SEYTMNFIGD FNIQGDTQLL QTYWDRLGIQ VVAHFTGNGT YDDLRCMHQA 
       260        270        280        290        300
QLNVVNCARS SGYIANELKK RYGIPRLDID SWGFNYMAEG IRKICAFFGI 
       310        320        330        340        350
EEKGEELIAE EYAKWKPKLD WYKERLQGKK MAIWTGGPRL WHWTKSVEDD 
       360        370        380        390        400
LGVQVVAMSS KFGHEEDFEK VIARGKEGTY YIDDGNELEF FEIIDLVKPD 
       410        420        430        440        450
VIFTGPRVGE LVKKLHIPYV NGHGYHNGPY MGFEGFVNLA RDMYNAVHNP 
       460        470 
LRHLAAVDIR DKSQTTPVIV RGAA
Length:474
Mass (Da):53,878
Last modified:January 23, 2007 - 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:iD1AB7275E6E033B0
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
M32371 Genomic DNA Translation: AAA22172.1

Protein sequence database of the Protein Information Resource

More...PIRi		C35405

NCBI Reference Sequences

More...RefSeqi		WP_012698950.1, NZ_FPKM01000002.1

<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
M32371 Genomic DNA Translation: AAA22172.1
PIRiC35405
RefSeqiWP_012698950.1, NZ_FPKM01000002.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...PDBei

Protein Data Bank RCSB

More...RCSB PDBi

Protein Data Bank Japan

More...PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
5N6YX-ray1.35A/D1-474[»]
7ADRX-ray1.00A/D1-474[»]
7ADYX-ray1.05A/D1-474[»]
SMRiP16855
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

DIPiDIP-48893N
IntActiP16855, 2 interactors

Family and domain databases

InterProiView protein in InterPro
IPR000510, Nase/OxRdtase_comp1
IPR005974, Nase_asu
IPR010143, Nase_comp1_asu
IPR000318, Nase_comp1_CS
IPR010142, Nase_V-Fe_asu
PANTHERiPTHR43457, PTHR43457, 1 hit
PfamiView protein in Pfam
PF00148, Oxidored_nitro, 1 hit
TIGRFAMsiTIGR01284, alt_nitrog_alph, 1 hit
TIGR01862, N2-ase-Ialpha, 1 hit
TIGR01860, VNFD, 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 nameiVNFD_AZOVI
<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: P16855
<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: August 1, 1990
Last sequence update: January 23, 2007
Last modified: April 7, 2021
This is version 90 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

3D-structure

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
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