Annotations: 1C4T

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1c4ta_	Alpha and beta proteins (a/b)	CoA-dependent acyltransferases	CoA-dependent acyltransferases	CAT-like	Dihydrolipoamide succinyltransferase	(Escherichia coli BL21(DE3) ) [TaxId: 469008 ],	SCOPe (2.08)
C	d1c4tc_	Alpha and beta proteins (a/b)	CoA-dependent acyltransferases	CoA-dependent acyltransferases	CAT-like	Dihydrolipoamide succinyltransferase	(Escherichia coli BL21(DE3) ) [TaxId: 469008 ],	SCOPe (2.08)
B	d1c4tb_	Alpha and beta proteins (a/b)	CoA-dependent acyltransferases	CoA-dependent acyltransferases	CAT-like	Dihydrolipoamide succinyltransferase	(Escherichia coli BL21(DE3) ) [TaxId: 469008 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	CoA-dependent acyltransferases	8041527	3000272	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	CoA-dependent acyltransferases	8041527	3000272	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	CoA-dependent acyltransferases	8041527	3000272	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	2-oxoacid_dh	e1c4tA1	A: a+b complex topology	X: CoA-dependent acyltransferases (From Topology)	H: CoA-dependent acyltransferases (From Topology)	T: CoA-dependent acyltransferases	F: 2-oxoacid_dh	ECOD (1.6)
C	2-oxoacid_dh	e1c4tC1	A: a+b complex topology	X: CoA-dependent acyltransferases (From Topology)	H: CoA-dependent acyltransferases (From Topology)	T: CoA-dependent acyltransferases	F: 2-oxoacid_dh	ECOD (1.6)
B	2-oxoacid_dh	e1c4tB1	A: a+b complex topology	X: CoA-dependent acyltransferases (From Topology)	H: CoA-dependent acyltransferases (From Topology)	T: CoA-dependent acyltransferases	F: 2-oxoacid_dh	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.559.10	Alpha Beta	2-Layer Sandwich	Chloramphenicol Acetyltransferase	Chloramphenicol acetyltransferase-like domain	CATH (4.3.0)
C	3.30.559.10	Alpha Beta	2-Layer Sandwich	Chloramphenicol Acetyltransferase	Chloramphenicol acetyltransferase-like domain	CATH (4.3.0)
B	3.30.559.10	Alpha Beta	2-Layer Sandwich	Chloramphenicol Acetyltransferase	Chloramphenicol acetyltransferase-like domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF00198	2-oxoacid dehydrogenases acyltransferase (catalytic domain) (2-oxoacid_dh)	2-oxoacid dehydrogenases acyltransferase (catalytic domain)	These proteins contain one to three copies of a lipoyl binding domain followed by the catalytic domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	PROTEIN (DIHYDROLIPOAMIDE SUCCINYLTRANSFERASE)	S-succinyltransferase activity catalytic activity, acting on a protein acyltransferase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity S-acyltransferase activity dihydrolipoyllysine-residue succinyltransferase activity catalytic activity succinyltransferase activity fatty acid binding organic acid binding binding ion binding anion binding S-succinyltransferase activity catalytic activity, acting on a protein acyltransferase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity S-acyltransferase activity dihydrolipoyllysine-residue succinyltransferase activity catalytic activity succinyltransferase activity fatty acid binding organic acid binding binding ion binding anion binding lipid binding lipoic acid binding carboxylic acid binding heterocyclic compound binding monocarboxylic acid binding small molecule binding sulfur compound binding	aerobic respiration cellular respiration tricarboxylic acid cycle energy derivation by oxidation of organic compounds primary metabolic process metabolic process cellular process generation of precursor metabolites and energy lysine metabolic process catabolic process oxoacid metabolic process L-lysine catabolic process aspartate family amino acid metabolic process amino acid metabolic process aerobic respiration cellular respiration tricarboxylic acid cycle energy derivation by oxidation of organic compounds primary metabolic process metabolic process cellular process generation of precursor metabolites and energy lysine metabolic process catabolic process oxoacid metabolic process L-lysine catabolic process aspartate family amino acid metabolic process amino acid metabolic process acetyl-CoA metabolic process organic acid catabolic process organic acid metabolic process alpha-amino acid metabolic process nucleobase-containing compound metabolic process cellular catabolic process acyl-CoA metabolic process nucleobase-containing small molecule metabolic process carboxylic acid catabolic process L-lysine metabolic process amide catabolic process phosphate-containing compound metabolic process sulfur compound metabolic process small molecule metabolic process amide metabolic process thioester metabolic process phosphorus metabolic process amino acid catabolic process nucleoside phosphate metabolic process aspartate family amino acid catabolic process L-lysine catabolic process to acetyl-CoA via saccharopine lysine catabolic process L-amino acid catabolic process carboxylic acid metabolic process L-amino acid metabolic process purine-containing compound metabolic process proteinogenic amino acid metabolic process alpha-amino acid catabolic process proteinogenic amino acid catabolic process L-lysine catabolic process to acetyl-CoA organophosphate metabolic process small molecule catabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex oxoglutarate dehydrogenase complex catalytic complex oxidoreductase complex tricarboxylic acid cycle heteromeric enzyme complex alpha-ketoacid dehydrogenase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR001078	2-oxoacid dehydrogenase acyltransferase, catalytic domain	Domain
A, B, C	IPR006255	Dihydrolipoamide succinyltransferase	Family
A, B, C	IPR050537	2-oxoacid dehydrogenase	Family
A, B, C	IPR023213	Chloramphenicol acetyltransferase-like domain superfamily	Homologous Superfamily
A, B, C	IPR036625	E3-binding domain superfamily	Homologous Superfamily
A, B, C	IPR004167	Peripheral subunit-binding domain	Domain
A, B, C	IPR011053	Single hybrid motif	Homologous Superfamily
A, B, C	IPR003016	2-oxo acid dehydrogenase, lipoyl-binding site	Binding Site
A, B, C	IPR000089	Biotin/lipoyl attachment	Domain

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A, C	dihydrolipoyllysine-residue succinyltransferase M-CSA #704	The alpha-ketoglutarate dehydrogenase complex (KGDC), also known as the oxoglutarate dehydrogenase complex (OGDC), is composed of multiple copies of three enzymes: oxoglutarate dehydrogenase (E1o), dihydrolipoamide succinyltransferase (E2o), and dihydrolipoamide dehydrogenase (E3o). The E2o component of the KGDC is a modular protein that is composed of one lipoyl domain at the N-terminus, followed by an E1o- and/or E3o-binding domain, and then by a carboxyl terminal catalytic domain. Although the catalytic domain forms trimers, the enzyme forms the octahedral inner core of the multienzyme complex, an aggregation of 24 subunits arranged with 432 point group symmetry. The substrate (dihydrolipoamide) is covalently bound to a specific lysine residue in the lipoyl domain. The enzyme catalyses the transfer of a succinyl group from the S-succinyldihydrolipoyl moiety to coenzyme A.	Defined by 2 residues: HIS:A-204 [auth A-375]THR:C-152 [auth C-323] \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 2.3.1.61 (PDB Primary Data) Search M-CSA Motif + EC 2.3.1.61

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.