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Entry version 96 (02 Dec 2020)
Sequence version 2 (17 Oct 2006)
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Protein

Ketol-acid reductoisomerase (NADP(+))

Gene

ilvC

Organism
Synechococcus elongatus (strain PCC 7942 / FACHB-805) (Anacystis nidulans R2)
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

Involved in the biosynthesis of branched-chain amino acids (BCAA). Catalyzes an alkyl-migration followed by a ketol-acid reduction of (S)-2-acetolactate (S2AL) to yield (R)-2,3-dihydroxy-isovalerate. In the isomerase reaction, S2AL is rearranged via a Mg-dependent methyl migration to produce 3-hydroxy-3-methyl-2-ketobutyrate (HMKB). In the reductase reaction, this 2-ketoacid undergoes a metal-dependent reduction by NADPH to yield (R)-2,3-dihydroxy-isovalerate.

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

Mg2+UniRule annotationNote: Binds 2 magnesium ions per subunit.UniRule annotation

<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: L-isoleucine biosynthesis

This protein is involved in step 2 of the subpathway that synthesizes L-isoleucine from 2-oxobutanoate.UniRule annotation This subpathway is part of the pathway L-isoleucine biosynthesis, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-isoleucine from 2-oxobutanoate, the pathway L-isoleucine biosynthesis and in Amino-acid biosynthesis.

Pathwayi: L-valine biosynthesis

This protein is involved in step 2 of the subpathway that synthesizes L-valine from pyruvate.UniRule annotation This subpathway is part of the pathway L-valine biosynthesis, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-valine from pyruvate, the pathway L-valine biosynthesis and in Amino-acid biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei51NADPUniRule annotation1
Binding sitei53NADPUniRule 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 sitei108UniRule annotation1
Binding sitei134NADP; via amide nitrogenUniRule annotation1
<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 bindingi191Magnesium 1UniRule annotation1
Metal bindingi191Magnesium 2UniRule annotation1
Metal bindingi195Magnesium 1UniRule annotation1
Metal bindingi227Magnesium 2UniRule annotation1
Metal bindingi231Magnesium 2UniRule annotation1
Binding sitei252SubstrateUniRule 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 bindingi25 – 28NADPUniRule annotation4
Nucleotide bindingi83 – 86NADPUniRule annotation4

<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 processAmino-acid biosynthesis, Branched-chain amino acid biosynthesis
LigandMagnesium, Metal-binding, NADP

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
SYNEL:SYNPCC7942_1552-MONOMER

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

More...
UniPathwayi
UPA00047;UER00056
UPA00049;UER00060

<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:
Ketol-acid reductoisomerase (NADP(+))UniRule annotation (EC:1.1.1.86UniRule annotation)
Short name:
KARIUniRule annotation
Alternative name(s):
Acetohydroxy-acid isomeroreductaseUniRule annotation
Short name:
AHIRUniRule annotation
Alpha-keto-beta-hydroxylacyl reductoisomeraseUniRule annotation
Ketol-acid reductoisomerase type 1UniRule annotation
Ketol-acid reductoisomerase type IUniRule 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:ilvCUniRule annotation
Ordered Locus Names:Synpcc7942_1552
<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>OrganismiSynechococcus elongatus (strain PCC 7942 / FACHB-805) (Anacystis nidulans R2)
<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 identifieri1140 [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 lineageiBacteriaCyanobacteriaSynechococcalesSynechococcaceaeSynechococcus
<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
  • UP000002717 <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 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_00002527971 – 330Ketol-acid reductoisomerase (NADP(+))Add BLAST330

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q31MY7

<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

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
1140.Synpcc7942_1552

<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

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SMRi
Q31MY7

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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini2 – 182KARI N-terminal RossmannPROSITE-ProRule annotationAdd BLAST181
Domaini183 – 328KARI C-terminal knottedPROSITE-ProRule annotationAdd BLAST146

<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 ketol-acid reductoisomerase family.UniRule annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
COG0059, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_033821_0_1_3

Database of Orthologous Groups

More...
OrthoDBi
188901at2

Family and domain databases

HAMAP database of protein families

More...
HAMAPi
MF_00435, IlvC, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR008927, 6-PGluconate_DH-like_C_sf
IPR013023, KARI
IPR000506, KARI_C
IPR013116, KARI_N
IPR014359, KARI_prok
IPR036291, NAD(P)-bd_dom_sf

The PANTHER Classification System

More...
PANTHERi
PTHR21371, PTHR21371, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01450, IlvC, 1 hit
PF07991, IlvN, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF000116, IlvC_gammaproteo, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF48179, SSF48179, 1 hit
SSF51735, SSF51735, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR00465, ilvC, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51851, KARI_C, 1 hit
PS51850, KARI_N, 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.

Q31MY7-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MARMYYDADA NLDLLNGKTV AIIGYGSQGH AHALNLRDSG VNVVVGLYPG
60 70 80 90 100
SKSAAKAEAE GLKVLPVAEA AQAADWIMIL LPDEFQKSVF ENEIRPALSA
110 120 130 140 150
GKVLAFAHGF NIHFAQIVPP ADVDVVMIAP KSPGHLVRRT YEQGQGVPCL
160 170 180 190 200
FAIYQDASGQ ARDRAMAYAK GIGGTRAGIL ETSFREETET DLFGEQAVLC
210 220 230 240 250
GGLSALIKAG FETLVEAGYQ PELAYFECLH EVKLIVDLIV EGGLAAMRDS
260 270 280 290 300
ISNTAEYGDY VTGPRLITEE TKAEMKRVLA DIQQGRFALD FVQECGAGKP
310 320 330
VMTATRRLEA EHPIESVGKD LRAMFSWLKK
Length:330
Mass (Da):35,695
Last modified:October 17, 2006 - 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:i5EDC1EFE3274CE22
GO

<p>This subsection of the 'Sequence' section reports difference(s) between the protein sequence shown in the UniProtKB entry and other available protein sequences derived from the same gene.<p><a href='/help/sequence_caution' target='_top'>More...</a></p>Sequence cautioni

The sequence ABB57582 differs from that shown. Reason: Erroneous initiation.Curated

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
CP000100 Genomic DNA Translation: ABB57582.1 Different initiation.

NCBI Reference Sequences

More...
RefSeqi
WP_039755692.1, NC_007604.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
ABB57582; ABB57582; Synpcc7942_1552

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
syf:Synpcc7942_1552

<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
CP000100 Genomic DNA Translation: ABB57582.1 Different initiation.
RefSeqiWP_039755692.1, NC_007604.1

3D structure databases

SMRiQ31MY7
ModBaseiSearch...

Protein-protein interaction databases

STRINGi1140.Synpcc7942_1552

Proteomic databases

PRIDEiQ31MY7

Genome annotation databases

EnsemblBacteriaiABB57582; ABB57582; Synpcc7942_1552
KEGGisyf:Synpcc7942_1552

Phylogenomic databases

eggNOGiCOG0059, Bacteria
HOGENOMiCLU_033821_0_1_3
OrthoDBi188901at2

Enzyme and pathway databases

UniPathwayiUPA00047;UER00056
UPA00049;UER00060
BioCyciSYNEL:SYNPCC7942_1552-MONOMER

Family and domain databases

HAMAPiMF_00435, IlvC, 1 hit
InterProiView protein in InterPro
IPR008927, 6-PGluconate_DH-like_C_sf
IPR013023, KARI
IPR000506, KARI_C
IPR013116, KARI_N
IPR014359, KARI_prok
IPR036291, NAD(P)-bd_dom_sf
PANTHERiPTHR21371, PTHR21371, 1 hit
PfamiView protein in Pfam
PF01450, IlvC, 1 hit
PF07991, IlvN, 1 hit
PIRSFiPIRSF000116, IlvC_gammaproteo, 1 hit
SUPFAMiSSF48179, SSF48179, 1 hit
SSF51735, SSF51735, 1 hit
TIGRFAMsiTIGR00465, ilvC, 1 hit
PROSITEiView protein in PROSITE
PS51851, KARI_C, 1 hit
PS51850, KARI_N, 1 hit

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 nameiILVC_SYNE7
<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: Q31MY7
<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 17, 2006
Last sequence update: October 17, 2006
Last modified: December 2, 2020
This is version 96 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

Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families
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