3UK1

Crystal structure of a transketolase from Burkholderia thailandensis with an oxidized cysteinesulfonic acid in the active site

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Transketolase_C_1	e3uk1A3	A: a/b three-layered sandwiches	X: TK C-terminal domain-like (From Topology)	H: TK C-terminal domain-like (From Topology)	T: TK C-terminal domain-like	F: Transketolase_C_1	ECOD (1.6)
A	Transketolase_N	e3uk1A1	A: a/b three-layered sandwiches	X: Thiamin diphosphate-binding fold (THDP-binding) (From Topology)	H: Thiamin diphosphate-binding fold (THDP-binding) (From Topology)	T: Thiamin diphosphate-binding fold (THDP-binding)	F: Transketolase_N	ECOD (1.6)
A	Transket_pyr	e3uk1A2	A: a/b three-layered sandwiches	X: Thiamin diphosphate-binding fold (THDP-binding) (From Topology)	H: Thiamin diphosphate-binding fold (THDP-binding) (From Topology)	T: Thiamin diphosphate-binding fold (THDP-binding)	F: Transket_pyr	ECOD (1.6)
B	Transketolase_C_1	e3uk1B1	A: a/b three-layered sandwiches	X: TK C-terminal domain-like (From Topology)	H: TK C-terminal domain-like (From Topology)	T: TK C-terminal domain-like	F: Transketolase_C_1	ECOD (1.6)
B	Transketolase_N	e3uk1B3	A: a/b three-layered sandwiches	X: Thiamin diphosphate-binding fold (THDP-binding) (From Topology)	H: Thiamin diphosphate-binding fold (THDP-binding) (From Topology)	T: Thiamin diphosphate-binding fold (THDP-binding)	F: Transketolase_N	ECOD (1.6)
B	Transket_pyr	e3uk1B2	A: a/b three-layered sandwiches	X: Thiamin diphosphate-binding fold (THDP-binding) (From Topology)	H: Thiamin diphosphate-binding fold (THDP-binding) (From Topology)	T: Thiamin diphosphate-binding fold (THDP-binding)	F: Transket_pyr	ECOD (1.6)

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)
B	3.40.50.970	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Thiamin diphosphate (ThDP)-binding fold, Pyr/PP domains	CATH (4.3.0)
B	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, B	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, B	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, B	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, B	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 purine-containing compound metabolic process NADP 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 purine-containing compound metabolic process NADP 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 pyridine nucleotide metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR005478	Transketolase, bacterial-like	Family
A, B	IPR033247	Transketolase family	Family
A, B	IPR005474	Transketolase, N-terminal	Domain
A, B	IPR005475	Transketolase-like, pyrimidine-binding domain	Domain
A, B	IPR029061	Thiamin diphosphate-binding fold	Homologous Superfamily
A, B	IPR009014	Transketolase C-terminal/Pyruvate-ferredoxin oxidoreductase domain II	Homologous Superfamily
A, B	IPR049557	Transketolase conserved site	Conserved Site

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, B	OCS	Parent Component: CYS RESID: AA0556 PSI-MOD : L-cysteic acid (L-cysteine sulfonic acid) MOD:00460

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.