3M34 | pdb_00003m34

Crystal structure of transketolase in complex with thiamin diphosphate and calcium ion

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A		e3m34A1	A: Immunoglobulin-like beta-sandwich	X: Metalloproteases (zincins) catalytic domain	H: Metalloproteases (zincins) catalytic domain	T: Transketolase_C_1	F:	ECOD (20:10:01)
A		e3m34A3	A: Immunoglobulin-like beta-sandwich	X: Metalloproteases (zincins) catalytic domain	H: Metalloproteases (zincins) catalytic domain	T:	F:	ECOD (20:10:01)

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	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
A	PF22613	Transketolase-like TK C-terminal domain (Transketolase_C_1)	Transketolase-like TK C-terminal domain	This entry represents the C-terminal domain found in transketolase and transketolase-like enzymes [1-5], such as pyruvate dehydrogenase E1 component (OPD1) [4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Transketolase	transketolase activity transketolase or transaldolase activity transferase activity catalytic activity cation binding ion binding binding metal ion binding small molecule binding	nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process carbohydrate derivative 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 organophosphate metabolic process nucleobase-containing small molecule metabolic process pentose-phosphate shunt nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process carbohydrate derivative 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 organophosphate metabolic process nucleobase-containing small molecule metabolic process pentose-phosphate shunt phosphate-containing compound metabolic process pyridine-containing compound metabolic process metabolic process cellular process small molecule metabolic process phosphorus metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR033247	Transketolase family	Family
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	IPR005478	Transketolase, bacterial-like	Family
A	IPR005475	Transketolase-like, pyrimidine-binding domain	Domain
A	IPR055152	Transketolase-like, C-terminal domain	Domain
A	IPR020826	Transketolase binding site	Binding Site

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.