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Entry version 155 (02 Jun 2021)
Sequence version 2 (01 Nov 1995)
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Protein

3-isopropylmalate dehydrogenase

Gene

leuB

Organism
Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)
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

Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate.

UniRule annotation2 Publications

<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 annotation1 Publication, Mn2+UniRule annotation2 PublicationsNote: Binds 1 Mg2+ or Mn2+ ion per subunit.UniRule annotation

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

Inhibited by p-hydroxymercuribenzoate and N-ethylmaleimide, but not by iodoacetate or iodoacetamide.1 Publication

<p>This subsection of the 'Function' section describes biophysical and chemical properties, such as maximal absorption, kinetic parameters, pH dependence, redox potentials and temperature dependence.<p><a href='/help/biophysicochemical_properties' target='_top'>More...</a></p>Kineticsi

  1. KM=19 µM for beta-isopropylmalate1 Publication
  2. KM=0.1 mM for NAD1 Publication

pH dependencei

Optimum pH is 9.0 (PubMed:4889950). Optimum pH is 9.5 (PubMed:14087358).2 Publications

<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-leucine biosynthesis

This protein is involved in step 3 of the subpathway that synthesizes L-leucine from 3-methyl-2-oxobutanoate.UniRule annotation This subpathway is part of the pathway L-leucine 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-leucine from 3-methyl-2-oxobutanoate, the pathway L-leucine 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 sitei99SubstrateUniRule annotation1
Binding sitei109SubstrateUniRule annotation1
Binding sitei138SubstrateUniRule annotation1
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections ('Function', 'PTM / Processing', 'Pathology and Biotech') according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei145Important for catalysisUniRule annotation1
Sitei195Important for catalysisUniRule 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 bindingi227Magnesium or manganeseUniRule annotation1 Publication1
Binding sitei227SubstrateUniRule annotation1
Metal bindingi251Magnesium or manganeseUniRule annotation1 Publication1
Metal bindingi255Magnesium or manganeseUniRule annotation1 Publication1

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 bindingi78 – 91NADUniRule annotationAdd BLAST14
Nucleotide bindingi285 – 297NADUniRule annotationAdd BLAST13

<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, Leucine biosynthesis
LigandMagnesium, Manganese, Metal-binding, NAD

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
1.1.1.85, 5542

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

More...
UniPathwayi
UPA00048;UER00072

<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:
3-isopropylmalate dehydrogenase1 PublicationUniRule annotation (EC:1.1.1.85UniRule annotation2 Publications)
Alternative name(s):
3-IPM-DHUniRule annotation
Beta-IPM dehydrogenaseUniRule annotation
Short name:
IMDHUniRule 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:leuB1 PublicationUniRule annotation
Ordered Locus Names:STM0112
<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>OrganismiSalmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)
<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 identifieri99287 [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 lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeSalmonella
<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
  • UP000001014 <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

Keywords - Cellular componenti

Cytoplasm

<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_00000837431 – 3633-isopropylmalate dehydrogenaseAdd BLAST363

Proteomic databases

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

More...
PaxDbi
P37412

PRoteomics IDEntifications database

More...
PRIDEi
P37412

<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 annotation2 Publications

<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

1363
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
P37412

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P37412

<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 isocitrate and isopropylmalate dehydrogenases family. LeuB type 1 subfamily.UniRule annotationCurated

Phylogenomic databases

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_031953_0_3_6

Identification of Orthologs from Complete Genome Data

More...
OMAi
EYDLGAR

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P37412

Family and domain databases

HAMAP database of protein families

More...
HAMAPi
MF_01033, LeuB_type1, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR019818, IsoCit/isopropylmalate_DH_CS
IPR024084, IsoPropMal-DH-like_dom
IPR004429, Isopropylmalate_DH

The PANTHER Classification System

More...
PANTHERi
PTHR42979, PTHR42979, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00180, Iso_dh, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM01329, Iso_dh, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR00169, leuB, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00470, IDH_IMDH, 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.

P37412-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSKNYHIAVL PGDGIGPEVM AQALKVMDAV RSRFDMRITT SHYDVGGIAI
60 70 80 90 100
DNHGHPLPKA TVEGCEQADA ILFGSVGGPK WENLPPESQP ERGALLPLRK
110 120 130 140 150
HFKLFSNLRP AKLYQGLEAF CPLRADIAAN GFDILCVREL TGGIYFGQPK
160 170 180 190 200
GREGSGQYEK AFDTEVYHRF EIERIARIAF ESARKRRRKV TSIDKANVLQ
210 220 230 240 250
SSILWREIVN DVAKTYPDVE LAHMYIDNAT MQLIKDPSQF DVLLCSNLFG
260 270 280 290 300
DILSDECAMI TGSMGMLPSA SLNEQGFGLY EPAGGSAPDI AGKNIANPIA
310 320 330 340 350
QILSLALLLR YSLDANDAAT AIEQAINRAL EEGVRTGDLA RGAAAVSTDE
360
MGDIIARYVA EGV
Length:363
Mass (Da):39,513
Last modified:November 1, 1995 - 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:i3AEEED0A4BAB7FB4
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti32 – 40SRFDMRITT → VLICVYH in CAA37456 (PubMed:1730062).Curated9
Sequence conflicti52 – 55NHGH → SSGI in CAA37456 (PubMed:1730062).Curated4
Sequence conflicti81 – 94WENLP…PERGA → MGKFAPGKPAGARR (PubMed:1730062).CuratedAdd BLAST14
Sequence conflicti188R → C in CAA37456 (PubMed:1730062).Curated1
Sequence conflicti311 – 313YSL → TA in CAA37456 (PubMed:1730062).Curated3
Sequence conflicti345Missing in CAA37456 (PubMed:1730062).Curated1

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
X53376 Genomic DNA Translation: CAA37456.1
U20795 Genomic DNA Translation: AAB60185.1
AE006468 Genomic DNA Translation: AAL19076.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S20606

NCBI Reference Sequences

More...
RefSeqi
NP_459117.1, NC_003197.2
WP_000042325.1, NC_003197.2

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAL19076; AAL19076; STM0112

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
1251630

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
stm:STM0112

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|99287.12.peg.118

<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
X53376 Genomic DNA Translation: CAA37456.1
U20795 Genomic DNA Translation: AAB60185.1
AE006468 Genomic DNA Translation: AAL19076.1
PIRiS20606
RefSeqiNP_459117.1, NC_003197.2
WP_000042325.1, NC_003197.2

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
1CNZX-ray1.76A/B1-363[»]
SMRiP37412
ModBaseiSearch...
PDBe-KBiSearch...

Proteomic databases

PaxDbiP37412
PRIDEiP37412

Genome annotation databases

EnsemblBacteriaiAAL19076; AAL19076; STM0112
GeneIDi1251630
KEGGistm:STM0112
PATRICifig|99287.12.peg.118

Phylogenomic databases

HOGENOMiCLU_031953_0_3_6
OMAiEYDLGAR
PhylomeDBiP37412

Enzyme and pathway databases

UniPathwayiUPA00048;UER00072
BRENDAi1.1.1.85, 5542

Miscellaneous databases

EvolutionaryTraceiP37412

Family and domain databases

HAMAPiMF_01033, LeuB_type1, 1 hit
InterProiView protein in InterPro
IPR019818, IsoCit/isopropylmalate_DH_CS
IPR024084, IsoPropMal-DH-like_dom
IPR004429, Isopropylmalate_DH
PANTHERiPTHR42979, PTHR42979, 1 hit
PfamiView protein in Pfam
PF00180, Iso_dh, 1 hit
SMARTiView protein in SMART
SM01329, Iso_dh, 1 hit
TIGRFAMsiTIGR00169, leuB, 1 hit
PROSITEiView protein in PROSITE
PS00470, IDH_IMDH, 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 nameiLEU3_SALTY
<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: P37412
<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, 1995
Last modified: June 2, 2021
This is version 155 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, 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
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