Annotations: 4KXX

Human transketolase in covalent complex with donor ketose D-sedoheptulose-7-phosphate

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Pribosyltran	e4kxxA1	A: alpha arrays	X: PRTase-like	H: PRTase-like	T: PRTase-like	F: Pribosyltran	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.970	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Thiamin diphosphate (ThDP)-binding fold, Pyr/PP domains	CATH (4.3.0)
A	3.40.50.920	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02779	Transketolase, pyrimidine binding domain (Transket_pyr)	Transketolase, pyrimidine binding domain	This family includes transketolase enzymes, pyruvate dehydrogenases, and branched chain alpha-keto acid decarboxylases.	Domain
A	PF02780	Transketolase, C-terminal domain (Transketolase_C)	Transketolase, C-terminal domain	The C-terminal domain of transketolase has been proposed as a regulatory molecule binding site [2].	Domain
A	PF00456	Transketolase, thiamine diphosphate binding domain (Transketolase_N)	Transketolase, thiamine diphosphate binding domain	This family includes transketolase enzymes EC:2.2.1.1. and also partially matches to 2-oxoisovalerate dehydrogenase beta subunit Swiss:P37941 EC:1.2.4.4. Both these enzymes utilise thiamine pyrophosphate as a cofactor, suggesting there may be common ...	This family includes transketolase enzymes EC:2.2.1.1. and also partially matches to 2-oxoisovalerate dehydrogenase beta subunit Swiss:P37941 EC:1.2.4.4. Both these enzymes utilise thiamine pyrophosphate as a cofactor, suggesting there may be common aspects in their mechanism of catalysis.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Transketolase	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding calcium ion binding identical protein binding protein binding protein homodimerization activity protein dimerization activity transketolase activity transketolase or transaldolase activity transferase activity cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding calcium ion binding identical protein binding protein binding protein homodimerization activity protein dimerization activity transketolase activity transketolase or transaldolase activity transferase activity catalytic activity vitamin binding thiamine pyrophosphate binding anion binding quaternary ammonium group binding heterocyclic compound binding sulfur compound binding	carbohydrate derivative biosynthetic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process carbohydrate derivative metabolic process D-xylulose 5-phosphate biosynthetic process metabolic process cellular process D-xylulose 5-phosphate metabolic process phosphorus metabolic process nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process primary metabolic process generation of precursor metabolites and energy carbohydrate derivative biosynthetic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process carbohydrate derivative metabolic process D-xylulose 5-phosphate biosynthetic process metabolic process cellular process D-xylulose 5-phosphate metabolic process phosphorus metabolic process nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process primary metabolic process generation of precursor metabolites and energy glucose 6-phosphate metabolic process nucleotide metabolic process NADP+ metabolic process purine-containing compound metabolic process nucleobase-containing compound metabolic process NADPH regeneration purine nucleotide metabolic process nucleobase-containing small molecule metabolic process pentose-phosphate shunt pyridine-containing compound metabolic process small molecule metabolic process glyceraldehyde-3-phosphate metabolic process aldehyde biosynthetic process aldehyde metabolic process glyceraldehyde-3-phosphate biosynthetic process pentose-phosphate shunt, non-oxidative branch	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule intracellular organelle nuclear body cellular anatomical structure nucleoplasm organelle lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule intracellular organelle nuclear body cellular anatomical structure nucleoplasm organelle lumen organelle membraneless organelle supramolecular complex nuclear ribonucleoprotein granule nuclear lumen vesicle extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular membrane-bounded organelle peroxisome microbody cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005474	Transketolase, N-terminal	Domain
A	IPR029061	Thiamin diphosphate-binding fold	Homologous Superfamily
A	IPR009014	Transketolase C-terminal/Pyruvate-ferredoxin oxidoreductase domain II	Homologous Superfamily
A	IPR049557	Transketolase conserved site	Conserved Site
A	IPR051424	Transketolase-like	Family
A	IPR005475	Transketolase-like, pyrimidine-binding domain	Domain
A	IPR033248	Transketolase, C-terminal domain	Domain
A	IPR020826	Transketolase binding site	Binding Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: P29401	Mammary Neoplasms, Experimental transketolase deficiency Wernicke encephalopathy sarcomatoid carcinoma carcinoma malignant pancreatic neoplasm non-alcoholic fatty liver disease ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia autism spectrum disorder large cell medulloblastoma lung carcinoma medulloblastoma non-small cell lung carcinoma pancreatic ductal adenocarcinoma Mammary Neoplasms, Experimental transketolase deficiency Wernicke encephalopathy sarcomatoid carcinoma carcinoma malignant pancreatic neoplasm non-alcoholic fatty liver disease ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia autism spectrum disorder large cell medulloblastoma lung carcinoma medulloblastoma non-small cell lung carcinoma pancreatic ductal adenocarcinoma plasma cell myeloma tuberculosis B-cell chronic lymphocytic leukemia Wernicke-Korsakoff syndrome ductal breast carcinoma in situ lung adenocarcinoma malignant colon neoplasm mammary neoplasms, animal osteosarcoma pancreatic intraductal papillary-mucinous neoplasm astrocytic tumor undifferentiated carcinoma Emery-Dreifuss muscular dystrophy invasive ductal breast carcinoma lung cancer