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Entry version 84 (16 Jan 2019)
Sequence version 1 (13 Sep 2004)
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Protein

Transketolase

Gene

TKT

Organism
Bos taurus (Bovine)
Status
Reviewed-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 transcript 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 transfer of a two-carbon ketol group from a ketose donor to an aldose acceptor, via a covalent intermediate with the cofactor thiamine pyrophosphate.By similarity

<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

Protein has several cofactor binding sites:

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ 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 sitei37SubstrateBy similarity1
<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>Sitei37Important for catalytic activityBy similarity1
Binding sitei40Thiamine pyrophosphateBy similarity1
Binding sitei77Thiamine pyrophosphateBy similarity1
<p>This subsection of the ‘Function’ 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 bindingi155MagnesiumBy similarity1
Binding sitei156Thiamine pyrophosphate; via amide nitrogenBy similarity1
Metal bindingi185MagnesiumBy similarity1
Binding sitei185Thiamine pyrophosphateBy similarity1
Metal bindingi187Magnesium; via carbonyl oxygenBy similarity1
Binding sitei244Thiamine pyrophosphateBy similarity1
Binding sitei258SubstrateBy similarity1
Binding sitei258Thiamine pyrophosphateBy similarity1
Sitei258Important for catalytic activityBy similarity1
Binding sitei318SubstrateBy similarity1
Binding sitei345SubstrateBy similarity1
<p>This subsection of the ‘Function’ 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 sitei366Proton donorBy similarity1
Binding sitei392Thiamine pyrophosphateBy similarity1
Binding sitei416SubstrateBy similarity1
Binding sitei424SubstrateBy similarity1
Binding sitei428Thiamine pyrophosphateBy similarity1
Binding sitei474SubstrateBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ 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 bindingi123 – 125Thiamine pyrophosphateBy similarity3

<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 functionTransferase
LigandCalcium, Magnesium, Metal-binding, Thiamine pyrophosphate

<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:
Transketolase (EC:2.2.1.1)
Short name:
TK
<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:TKT
Synonyms:TKT1
<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>OrganismiBos taurus (Bovine)
<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 identifieri9913 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCetartiodactylaRuminantiaPecoraBovidaeBovinaeBos
<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
  • UP000009136 <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: Unplaced

<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_00001918931 – 623TransketolaseAdd BLAST623

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei1N-acetylmethionineBy similarity1
Modified residuei6N6-acetyllysineBy similarity1
Modified residuei11N6-acetyllysineBy similarity1
Modified residuei144N6-acetyllysineBy similarity1
Modified residuei204N6-acetyllysineBy similarity1
Modified residuei232N6-acetyllysineBy similarity1
Modified residuei241N6-acetyllysineBy similarity1
Modified residuei260N6-acetyllysineBy similarity1
Modified residuei287PhosphothreonineBy similarity1
Modified residuei295PhosphoserineBy similarity1
Modified residuei345PhosphoserineBy similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section describes <strong>covalent linkages</strong> of various types formed <strong>between two proteins (interchain cross-links)</strong> or <strong>between two parts of the same protein (intrachain cross-links)</strong>, except the disulfide bonds that are annotated in the <a href="http://www.uniprot.org/manual/disulfid">'Disulfide bond'</a> subsection.<p><a href='/help/crosslnk' target='_top'>More...</a></p>Cross-linki352Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)By similarity
Modified residuei538N6-acetyllysineBy similarity1
Modified residuei603N6-acetyllysineBy similarity1

Keywords - PTMi

Acetylation, Isopeptide bond, Phosphoprotein, Ubl conjugation

Proteomic databases

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

More...
PaxDbi
Q6B855

PeptideAtlas

More...
PeptideAtlasi
Q6B855

PRoteomics IDEntifications database

More...
PRIDEi
Q6B855

<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.By similarity

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
9913.ENSBTAP00000004892

<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

Protein Model Portal of the PSI-Nature Structural Biology Knowledgebase

More...
ProteinModelPortali
Q6B855

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

More...
SMRi
Q6B855

Database of comparative protein structure models

More...
ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
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 transketolase family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0523 Eukaryota
COG0021 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000243868

The HOVERGEN Database of Homologous Vertebrate Genes

More...
HOVERGENi
HBG004036

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q6B855

KEGG Orthology (KO)

More...
KOi
K00615

Database of Orthologous Groups

More...
OrthoDBi
354970at2759

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.50.920, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR029061 THDP-binding
IPR009014 Transketo_C/PFOR_II
IPR005475 Transketolase-like_Pyr-bd
IPR020826 Transketolase_BS
IPR033248 Transketolase_C
IPR005474 Transketolase_N

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF02779 Transket_pyr, 1 hit
PF02780 Transketolase_C, 1 hit
PF00456 Transketolase_N, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00861 Transket_pyr, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF52518 SSF52518, 2 hits
SSF52922 SSF52922, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00801 TRANSKETOLASE_1, 1 hit
PS00802 TRANSKETOLASE_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_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>.<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.

Q6B855-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MEAYHKPDQQ KLQALKDTAN RLRISSIQAT TAAGSGHPTS CCSAAEIMAV
60 70 80 90 100
LFFHTMRYKA LDPRNPHNDR FVLSKGHAAP ILYAVWAEAG FLPESELLNL
110 120 130 140 150
RKINSDLDGH PVPKQAFTDV ATGSLGQGLG AACGMAYTGK YFDKASYRVY
160 170 180 190 200
CMLGDGELSE GSVWEAMAFA SIYKLDNLVA ILDINRLGQS DPAPLQHQMD
210 220 230 240 250
IYQKRCEAFG WNAVIVDGHS VEELCKAFGQ VKNQPTAIIA KTFKGRGITG
260 270 280 290 300
IEDKESWHGK PLPKNMADQI IQEISGQIQS KKKILATPPE EDAPSVDITN
310 320 330 340 350
IRMPTPPNYK VGDKIATRKA YGQALAKLGH ASNRIIALDG DTKNSTFSEL
360 370 380 390 400
FKKEHPDRFI ECYIAEQNMV SIAVGCATRD RTVPFCSTFA AFFTRAFDQI
410 420 430 440 450
RMAAISESNI NLCGSHCGVS IGEDGPSQMA LEDLAMFRSI PMSTVFYPSD
460 470 480 490 500
GVATEKAVEL AANTKGICFI RTSRPENAII YKQHEDFQIG QAKVVLKNKD
510 520 530 540 550
DQVTVIGAGV TLHEALAAAD LLKREKINIR VLDPFTIKPL DKKLILDSAR
560 570 580 590 600
ATKGRILTVE DHYYEGGIGE AVASAVVGEP GVTVTRLAVS QVPRSGKPAE
610 620
LLKMFGIDRD AIAQAVRGLV TRA
Length:623
Mass (Da):67,906
Last modified:September 13, 2004 - 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:i590E6D2F8D7E2A70
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
AY675082 mRNA Translation: AAT84375.1

NCBI Reference Sequences

More...
RefSeqi
NP_001003906.1, NM_001003906.1

UniGene gene-oriented nucleotide sequence clusters

More...
UniGenei
Bt.4750

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
445425

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
bta:445425

<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
AY675082 mRNA Translation: AAT84375.1
RefSeqiNP_001003906.1, NM_001003906.1
UniGeneiBt.4750

3D structure databases

ProteinModelPortaliQ6B855
SMRiQ6B855
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi9913.ENSBTAP00000004892

Proteomic databases

PaxDbiQ6B855
PeptideAtlasiQ6B855
PRIDEiQ6B855

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi445425
KEGGibta:445425

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
7086

Phylogenomic databases

eggNOGiKOG0523 Eukaryota
COG0021 LUCA
HOGENOMiHOG000243868
HOVERGENiHBG004036
InParanoidiQ6B855
KOiK00615
OrthoDBi354970at2759

Family and domain databases

Gene3Di3.40.50.920, 1 hit
InterProiView protein in InterPro
IPR029061 THDP-binding
IPR009014 Transketo_C/PFOR_II
IPR005475 Transketolase-like_Pyr-bd
IPR020826 Transketolase_BS
IPR033248 Transketolase_C
IPR005474 Transketolase_N
PfamiView protein in Pfam
PF02779 Transket_pyr, 1 hit
PF02780 Transketolase_C, 1 hit
PF00456 Transketolase_N, 1 hit
SMARTiView protein in SMART
SM00861 Transket_pyr, 1 hit
SUPFAMiSSF52518 SSF52518, 2 hits
SSF52922 SSF52922, 1 hit
PROSITEiView protein in PROSITE
PS00801 TRANSKETOLASE_1, 1 hit
PS00802 TRANSKETOLASE_2, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
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 nameiTKT_BOVIN
<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: Q6B855
<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: September 27, 2004
Last sequence update: September 13, 2004
Last modified: January 16, 2019
This is version 84 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 statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata 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

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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