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Entry version 153 (31 Jul 2019)
Sequence version 2 (01 Nov 1997)
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Protein

Ribonucleoside-diphosphate reductase 2 subunit beta

Gene

nrdF

Organism
Escherichia coli (strain K12)
Status
Reviewed-Annotation score:

Annotation score:5 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

Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides. R2F contains the tyrosyl radical required for catalysis.

<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

Fe cationBy similarityNote: Binds 2 iron ions per subunit.By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: DNA replication

This protein is involved in the pathway DNA replication, which is part of Genetic information processing.
View all proteins of this organism that are known to be involved in the pathway DNA replication and in Genetic information processing.

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 bindingi67Iron 1PROSITE-ProRule annotation1
Metal bindingi98Iron 1PROSITE-ProRule annotation1
Metal bindingi98Iron 2By similarity1
Metal bindingi101Iron 1PROSITE-ProRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei105PROSITE-ProRule annotation1
Metal bindingi158Iron 2By similarity1
Metal bindingi192Iron 21
Metal bindingi195Iron 21

<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

GO - Biological processi

<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 processDNA replication
LigandIron, Metal-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
EcoCyc:NRDF-MONOMER
ECOL316407:JW2651-MONOMER
MetaCyc:NRDF-MONOMER

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
1.17.4.1 2026

UniPathway: a resource for the exploration and annotation of metabolic pathways

More...
UniPathwayi
UPA00326

<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:
Ribonucleoside-diphosphate reductase 2 subunit beta (EC:1.17.4.1)
Alternative name(s):
R2F protein
Ribonucleotide reductase 2
<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:nrdF
Synonyms:ygaD
Ordered Locus Names:b2676, JW2651
<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>OrganismiEscherichia coli (strain K12)
<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 identifieri83333 [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 lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
<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
  • UP000000318 <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
  • UP000000625 Componenti: Chromosome

Organism-specific databases

Escherichia coli strain K12 genome database

More...
EcoGenei
EG12381 nrdF

<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

<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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001904881 – 319Ribonucleoside-diphosphate reductase 2 subunit betaAdd BLAST319

Proteomic databases

Encyclopedia of Proteome Dynamics

More...
EPDi
P37146

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P37146

PRoteomics IDEntifications database

More...
PRIDEi
P37146

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Induced 2-fold by hydroxyurea.1 Publication

<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

Tetramer of two alpha and two beta subunits.

By similarity

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
4262269, 135 interactors

Protein interaction database and analysis system

More...
IntActi
P37146, 9 interactors

STRING: functional protein association networks

More...
STRINGi
511145.b2676

<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

1319
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
P37146

Database of comparative protein structure models

More...
ModBasei
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P37146

<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

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4107R25 Bacteria
COG0208 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000246153

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P37146

KEGG Orthology (KO)

More...
KOi
K00526

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P37146

Family and domain databases

Conserved Domains Database

More...
CDDi
cd01049 RNRR2, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.620.20, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR009078 Ferritin-like_SF
IPR012348 RNR-like
IPR026494 RNR_NrdF-like
IPR033909 RNR_small
IPR030475 RNR_small_AS
IPR000358 RNR_small_fam

The PANTHER Classification System

More...
PANTHERi
PTHR23409 PTHR23409, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00268 Ribonuc_red_sm, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF000355 NrdB, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF47240 SSF47240, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR04171 RNR_1b_NrdF, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00368 RIBORED_SMALL, 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.

P37146-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKLSRISAIN WNKISDDKDL EVWNRLTSNF WLPEKVPLSN DIPAWQTLTV
60 70 80 90 100
VEQQLTMRVF TGLTLLDTLQ NVIGAPSLMP DALTPHEEAV LSNISFMEAV
110 120 130 140 150
HARSYSSIFS TLCQTKDVDA AYAWSEENAP LQRKAQIIQQ HYRGDDPLKK
160 170 180 190 200
KIASVFLESF LFYSGFWLPM YFSSRGKLTN TADLIRLIIR DEAVHGYYIG
210 220 230 240 250
YKYQKNMEKI SLGQREELKS FAFDLLLELY DNELQYTDEL YAETPWADDV
260 270 280 290 300
KAFLCYNANK ALMNLGYEPL FPAEMAEVNP AILAALSPNA DENHDFFSGS
310
GSSYVMGKAV ETEDEDWNF
Length:319
Mass (Da):36,443
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:i0C95394CF150EEFB
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
U00096 Genomic DNA Translation: AAC75723.1
AP009048 Genomic DNA Translation: BAA16541.1
M24856 Genomic DNA No translation available.

Protein sequence database of the Protein Information Resource

More...
PIRi
E65047

NCBI Reference Sequences

More...
RefSeqi
NP_417162.1, NC_000913.3
WP_000777969.1, NZ_LN832404.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC75723; AAC75723; b2676
BAA16541; BAA16541; BAA16541

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
947149

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW2651
eco:b2676

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|1411691.4.peg.4065

<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
U00096 Genomic DNA Translation: AAC75723.1
AP009048 Genomic DNA Translation: BAA16541.1
M24856 Genomic DNA No translation available.
PIRiE65047
RefSeqiNP_417162.1, NC_000913.3
WP_000777969.1, NZ_LN832404.1

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
3N37X-ray1.65A1-319[»]
3N38X-ray1.90A1-319[»]
3N39X-ray2.50A/B1-319[»]
3N3AX-ray1.99A/B1-319[»]
3N3BX-ray2.36A/B1-319[»]
4M1FX-ray2.00A1-319[»]
SMRiP37146
ModBaseiSearch...

Protein-protein interaction databases

BioGridi4262269, 135 interactors
IntActiP37146, 9 interactors
STRINGi511145.b2676

Proteomic databases

EPDiP37146
PaxDbiP37146
PRIDEiP37146

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAC75723; AAC75723; b2676
BAA16541; BAA16541; BAA16541
GeneIDi947149
KEGGiecj:JW2651
eco:b2676
PATRICifig|1411691.4.peg.4065

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...
EchoBASEi
EB2283
EcoGeneiEG12381 nrdF

Phylogenomic databases

eggNOGiENOG4107R25 Bacteria
COG0208 LUCA
HOGENOMiHOG000246153
InParanoidiP37146
KOiK00526
PhylomeDBiP37146

Enzyme and pathway databases

UniPathwayiUPA00326
BioCyciEcoCyc:NRDF-MONOMER
ECOL316407:JW2651-MONOMER
MetaCyc:NRDF-MONOMER
BRENDAi1.17.4.1 2026

Miscellaneous databases

EvolutionaryTraceiP37146

Protein Ontology

More...
PROi
PR:P37146

Family and domain databases

CDDicd01049 RNRR2, 1 hit
Gene3Di1.10.620.20, 1 hit
InterProiView protein in InterPro
IPR009078 Ferritin-like_SF
IPR012348 RNR-like
IPR026494 RNR_NrdF-like
IPR033909 RNR_small
IPR030475 RNR_small_AS
IPR000358 RNR_small_fam
PANTHERiPTHR23409 PTHR23409, 1 hit
PfamiView protein in Pfam
PF00268 Ribonuc_red_sm, 1 hit
PIRSFiPIRSF000355 NrdB, 1 hit
SUPFAMiSSF47240 SSF47240, 1 hit
TIGRFAMsiTIGR04171 RNR_1b_NrdF, 1 hit
PROSITEiView protein in PROSITE
PS00368 RIBORED_SMALL, 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 nameiRIR4_ECOLI
<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: P37146
Secondary accession number(s): P78244
<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/Swiss-Prot: October 1, 1994
Last sequence update: November 1, 1997
Last modified: July 31, 2019
This is version 153 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, Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families
  4. Escherichia coli
    Escherichia coli (strain K12): entries and cross-references to EcoGene
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