6KTQ | pdb_00006ktq

Crystal structure of catalytic domain of homocitrate synthase from Sulfolobus acidocaldarius (SaHCS(dRAM)) in complex with alpha-ketoglutarate/Zn2+/CoA

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)
B	F_UNCLASSIFIED	e6ktqB2	A: alpha arrays	X: RuvA-C	H: post-HMGL domain-like (From Topology)	T: post-HMGL domain-like	F: F_UNCLASSIFIED	ECOD (1.6)
B	HMGL-like	e6ktqB1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: HMGL-like	ECOD (1.6)
A	F_UNCLASSIFIED	e6ktqA2	A: alpha arrays	X: RuvA-C	H: post-HMGL domain-like (From Topology)	T: post-HMGL domain-like	F: F_UNCLASSIFIED	ECOD (1.6)
A	HMGL-like	e6ktqA1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: HMGL-like	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.20.20.70	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Aldolase class I	CATH (utative)
A	3.20.20.70	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Aldolase class I	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00682	HMGL-like (HMGL-like)	HMGL-like	This family contains a diverse set of enzymes. These include various aldolases and a region of pyruvate carboxylase.	Domain
A, B	PF22617	Homocitrate synthase post-HMGL domain-like (HCS_D2)	Homocitrate synthase post-HMGL domain-like	This entry represents domain found in diverse homologues of Homocitrate synthase (HCS) [2]. This domain follows the catalytic domain and is required for the enzymatic activity.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Homocitrate synthase	2-isopropylmalate synthase activity acyltransferase activity acyltransferase activity, acyl groups converted into alkyl on transfer transferase activity catalytic activity homocitrate synthase activity cation binding ion binding binding metal ion binding small molecule binding	oxoacid metabolic process pyruvate family amino acid biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process branched-chain amino acid metabolic process L-leucine metabolic process L-leucine biosynthetic process small molecule biosynthetic process carboxylic acid metabolic process L-amino acid biosynthetic process oxoacid metabolic process pyruvate family amino acid biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process branched-chain amino acid metabolic process L-leucine metabolic process L-leucine biosynthetic process small molecule biosynthetic process carboxylic acid metabolic process L-amino acid biosynthetic process primary metabolic process L-amino acid metabolic process proteinogenic amino acid metabolic process amino acid biosynthetic process biosynthetic process branched-chain amino acid biosynthetic process proteinogenic amino acid biosynthetic process metabolic process cellular process alpha-amino acid biosynthetic process lysine metabolic process lysine biosynthetic process via aminoadipic acid aspartate family amino acid biosynthetic process lysine biosynthetic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR050073	2-IPM synthase/homocitrate synthase-like	Family
A, B	IPR013785	Aldolase-type TIM barrel	Homologous Superfamily
A, B	IPR011872	Homocitrate synthase	Family
A, B	IPR019887	Transcription regulator AsnC/Lrp, ligand binding domain	Domain
A, B	IPR000891	Pyruvate carboxyltransferase	Domain
A, B	IPR002034	Alpha-isopropylmalate/homocitrate synthase, conserved site	Conserved Site
A, B	IPR054691	2-isopropylmalate synthase/homocitrate synthase, post-catalytic domain	Domain
A, B	IPR011008	Dimeric alpha-beta barrel	Homologous Superfamily

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.