Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Entry version 138 (29 Sep 2021)
Sequence version 1 (01 Oct 2000)
Previous versions | rss
Add a publicationFeedback
Protein

Inosine-5'-monophosphate dehydrogenase

Gene

guaB

Organism
Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)
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>
-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 conversion of inosine 5'-phosphate (IMP) to xanthosine 5'-phosphate (XMP), the first committed and rate-limiting step in the de novo synthesis of guanine nucleotides, and therefore plays an important role in the regulation of cell growth.

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

K+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

Mycophenolic acid (MPA) is a non-competitive inhibitor that prevents formation of the closed enzyme conformation by binding to the same site as the amobile flap. In contrast, mizoribine monophosphate (MZP) is a competitive inhibitor that induces the closed conformation. MPA is a potent inhibitor of mammalian IMPDHs but a poor inhibitor of the bacterial enzymes. MZP is a more potent inhibitor of bacterial IMPDH.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: XMP biosynthesis via de novo pathway

This protein is involved in step 1 of the subpathway that synthesizes XMP from IMP.UniRule annotation This subpathway is part of the pathway XMP biosynthesis via de novo pathway, which is itself part of Purine metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes XMP from IMP, the pathway XMP biosynthesis via de novo pathway and in Purine metabolism.

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 sitei25NAD; via carbonyl oxygenCombined sources1
Binding sitei228NAD; via amide nitrogenCombined sources1
Binding sitei279NADCombined sources1
<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 bindingi302Potassium; via carbonyl oxygenUniRule annotation1
Metal bindingi304Potassium; via carbonyl oxygenUniRule annotation1
Binding sitei305IMPUniRule 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 sitei307Thioimidate intermediateUniRule annotation1
Metal bindingi307Potassium; via carbonyl oxygenUniRule annotation1
Active sitei403Proton acceptorUniRule annotation1
Binding sitei417IMPUniRule annotation1
Binding sitei442NADCombined sources1
Metal bindingi471Potassium; via carbonyl oxygen; shared with tetrameric partnerUniRule annotation1
Metal bindingi472Potassium; via carbonyl oxygen; shared with tetrameric partnerUniRule annotation1
Metal bindingi473Potassium; via carbonyl oxygen; shared with tetrameric 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 bindingi250 – 256NADCombined sources7
Nucleotide bindingi250 – 252NADUniRule annotation3
Nucleotide bindingi300 – 302NADUniRule annotation3

<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 functionOxidoreductaseUniRule annotationARBA annotation
Biological processGMP biosynthesisUniRule annotationARBA annotation, Purine biosynthesis
LigandMetal-bindingUniRule annotationARBA annotation, NADUniRule annotation, Nucleotide-bindingCombined sources, PotassiumUniRule annotationARBA annotation

Enzyme and pathway databases

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

More...
UniPathwayi
UPA00601;UER00295

<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:
Inosine-5'-monophosphate dehydrogenaseUniRule annotation (EC:1.1.1.205UniRule annotation)
Short name:
IMP dehydrogenaseUniRule annotation
Short name:
IMPDUniRule annotation
Short name:
IMPDHUniRule 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:guaBUniRule annotation
Ordered Locus Names:VC_0767Imported
<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>OrganismiVibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)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 identifieri243277 [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 lineageiBacteriaProteobacteriaGammaproteobacteriaVibrionalesVibrionaceaeVibrio
<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
  • UP000000584 <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 1

<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

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q9KTW3

<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

Homotetramer.

UniRule annotation

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
243277.VC_0767

<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

More...
SMRi
Q9KTW3

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

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>Domaini95 – 154CBSInterPro annotationAdd BLAST60
Domaini155 – 216CBSInterPro annotationAdd BLAST62

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni340 – 342IMP bindingUniRule annotation3
Regioni363 – 364IMP bindingUniRule annotation2
Regioni387 – 391IMP bindingUniRule annotation5

<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 IMPDH/GMPR family.UniRule annotationARBA annotation

Keywords - Domaini

CBS domainPROSITE-ProRule annotationARBA annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
COG0516, Bacteria
COG0517, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_022552_2_2_6

Identification of Orthologs from Complete Genome Data

More...
OMAi
MGYCGAK

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00381, IMPDH, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.20.20.70, 1 hit

HAMAP database of protein families

More...
HAMAPi
MF_01964, IMPDH, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR013785, Aldolase_TIM
IPR000644, CBS_dom
IPR005990, IMP_DH
IPR015875, IMP_DH/GMP_Rdtase_CS
IPR001093, IMP_DH_GMPRt

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00571, CBS, 2 hits
PF00478, IMPDH, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF000130, IMPDH, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00116, CBS, 2 hits

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR01302, IMP_dehydrog, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51371, CBS, 2 hits
PS00487, IMP_DH_GMP_RED, 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.

Q9KTW3-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MHMLRIAKEA LTFDDVLLVP AHSTVLPNTA DLRTRLTKNI ALNIPMVSAS
60 70 80 90 100
MDTVTEARLA IALAQEGGIG FIHKNMSIEQ QAAQVHQVKI FEAGVVTHPV
110 120 130 140 150
TVRPEQTIAD VMELTHYHGF AGFPVVTENN ELVGIITGRD VRFVTDLTKS
160 170 180 190 200
VAAVMTPKER LATVKEGATG AEVQEKMHKA RVEKILVVND EFQLKGMITA
210 220 230 240 250
KDFHKAESKP NACKDEQGRL RVGAAVGAAP GNEERVKALV EAGVDVLLID
260 270 280 290 300
SSHGHSEGVL QRIRETRAAY PHLEIIGGNV ATAEGARALI EAGVSAVKVG
310 320 330 340 350
IGPGSICTTR IVTGVGVPQI TAIADAAGVA NEYGIPVIAD GGIRFSGDIS
360 370 380 390 400
KAIAAGASCV MVGSMFAGTE EAPGEVILYQ GRSYKAYRGM GSLGAMSKGS
410 420 430 440 450
SDRYFQTDNA ADKLVPEGIE GRIAYKGHLK EIIHQQMGGL RSCMGLTGSA
460 470 480
TVEDLRTKAQ FVRISGAGMK ESHVHDVQIT KEAPNYRLG
Length:489
Mass (Da):51,943
Last modified:October 1, 2000 - 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:iB38133B52F8661C4
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
AE003852 Genomic DNA Translation: AAF93932.1

Protein sequence database of the Protein Information Resource

More...
PIRi
C82282

NCBI Reference Sequences

More...
RefSeqi
NP_230416.1, NC_002505.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAF93932; AAF93932; VC_0767

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
vch:VC0767

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|243277.26.peg.731

<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
AE003852 Genomic DNA Translation: AAF93932.1
PIRiC82282
RefSeqiNP_230416.1, NC_002505.1

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
4FEZX-ray2.16A/B1-489[»]
4FO4X-ray2.03A/B1-489[»]
4FXSX-ray2.24A1-489[»]
4IX2X-ray2.15A/B/C/D1-90[»]
A/B/C/D220-489[»]
4QNEX-ray2.32A/B1-90[»]
A/B220-489[»]
4QQ3X-ray1.72A1-90[»]
A220-489[»]
4X3ZX-ray1.62A/B1-90[»]
A/B220-489[»]
SMRiQ9KTW3
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

STRINGi243277.VC_0767

Proteomic databases

PRIDEiQ9KTW3

Protocols and materials databases

The DNASU plasmid repository

More...
DNASUi
2615310

Genome annotation databases

EnsemblBacteriaiAAF93932; AAF93932; VC_0767
KEGGivch:VC0767
PATRICifig|243277.26.peg.731

Phylogenomic databases

eggNOGiCOG0516, Bacteria
COG0517, Bacteria
HOGENOMiCLU_022552_2_2_6
OMAiMGYCGAK

Enzyme and pathway databases

UniPathwayiUPA00601;UER00295

Family and domain databases

CDDicd00381, IMPDH, 1 hit
Gene3Di3.20.20.70, 1 hit
HAMAPiMF_01964, IMPDH, 1 hit
InterProiView protein in InterPro
IPR013785, Aldolase_TIM
IPR000644, CBS_dom
IPR005990, IMP_DH
IPR015875, IMP_DH/GMP_Rdtase_CS
IPR001093, IMP_DH_GMPRt
PfamiView protein in Pfam
PF00571, CBS, 2 hits
PF00478, IMPDH, 1 hit
PIRSFiPIRSF000130, IMPDH, 1 hit
SMARTiView protein in SMART
SM00116, CBS, 2 hits
TIGRFAMsiTIGR01302, IMP_dehydrog, 1 hit
PROSITEiView protein in PROSITE
PS51371, CBS, 2 hits
PS00487, IMP_DH_GMP_RED, 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 nameiQ9KTW3_VIBCH
<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: Q9KTW3
<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: October 1, 2000
Last sequence update: October 1, 2000
Last modified: September 29, 2021
This is version 138 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

3D-structureCombined sources, Reference proteomeImported
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again