6LPI

Crystal Structure of AHAS holo-enzyme

External Resource: Annotation

Domain Annotation: ECOD Classification
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 [auth E]	ACT_5	e6lpiE1	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_5	ECOD (1.6)
C [auth F]	ACT_5	e6lpiF1	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_5	ECOD (1.6)
E [auth G]	ACT_5	e6lpiG1	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_5	ECOD (1.6)
G [auth H]	ACT_5	e6lpiH1	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_5	ECOD (1.6)
B [auth A]	TPP_enzyme_M	e6lpiA1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: DHS-like NAD/FAD-binding domain	F: TPP_enzyme_M	ECOD (1.6)
B [auth A]	TPP_enzyme_C	e6lpiA2	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: TPP_enzyme_C	ECOD (1.6)
B [auth A]	TPP_enzyme_N	e6lpiA3	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: TPP_enzyme_N	ECOD (1.6)
D [auth B]	TPP_enzyme_M	e6lpiB2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: DHS-like NAD/FAD-binding domain	F: TPP_enzyme_M	ECOD (1.6)
D [auth B]	TPP_enzyme_C	e6lpiB3	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: TPP_enzyme_C	ECOD (1.6)
D [auth B]	TPP_enzyme_N	e6lpiB1	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: TPP_enzyme_N	ECOD (1.6)
F [auth C]	TPP_enzyme_M	e6lpiC1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: DHS-like NAD/FAD-binding domain	F: TPP_enzyme_M	ECOD (1.6)
F [auth C]	TPP_enzyme_C	e6lpiC3	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: TPP_enzyme_C	ECOD (1.6)
F [auth C]	TPP_enzyme_N	e6lpiC2	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: TPP_enzyme_N	ECOD (1.6)
H [auth D]	TPP_enzyme_M	e6lpiD1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: DHS-like NAD/FAD-binding domain	F: TPP_enzyme_M	ECOD (1.6)
H [auth D]	TPP_enzyme_C	e6lpiD3	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: TPP_enzyme_C	ECOD (1.6)
H [auth D]	TPP_enzyme_N	e6lpiD2	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: TPP_enzyme_N	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth E], C [auth F], E [auth G], G [auth H]	PF01842	ACT domain (ACT)	ACT domain	This family of domains generally have a regulatory role. ACT domains are linked to a wide range of metabolic enzymes that are regulated by amino acid concentration. Pairs of ACT domains bind specifically to a particular amino acid leading to regulati ...	This family of domains generally have a regulatory role. ACT domains are linked to a wide range of metabolic enzymes that are regulated by amino acid concentration. Pairs of ACT domains bind specifically to a particular amino acid leading to regulation of the linked enzyme. The ACT domain is found in: D-3-phosphoglycerate dehydrogenase EC:1.1.1.95 Swiss:P08328, which is inhibited by serine [1]. Aspartokinase EC:2.7.2.4 Swiss:P53553, which is regulated by lysine. Acetolactate synthase small regulatory subunit Swiss:P00894, which is inhibited by valine. Phenylalanine-4-hydroxylase EC:1.14.16.1 Swiss:P00439, which is regulated by phenylalanine. Prephenate dehydrogenase EC:4.2.1.51 Swiss:P21203. formyltetrahydrofolate deformylase EC:3.5.1.10, Swiss:P37051, which is activated by methionine and inhibited by glycine. GTP pyrophosphokinase EC:2.7.6.5 Swiss:P11585	Domain
B [auth A], D [auth B], F [auth C], H [auth D]	PF00205	Thiamine pyrophosphate enzyme, central domain (TPP_enzyme_M)	Thiamine pyrophosphate enzyme, central domain	The central domain of TPP enzymes contains a 2-fold Rossman fold.	Domain
B [auth A], D [auth B], F [auth C], H [auth D]	PF02775	Thiamine pyrophosphate enzyme, C-terminal TPP binding domain (TPP_enzyme_C)	Thiamine pyrophosphate enzyme, C-terminal TPP binding domain	-	Domain
B [auth A], D [auth B], F [auth C], H [auth D]	PF02776	Thiamine pyrophosphate enzyme, N-terminal TPP binding domain (TPP_enzyme_N)	Thiamine pyrophosphate enzyme, N-terminal TPP binding domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth E], C [auth F], E [auth G], G [auth H]	Acetolactate synthase isozyme 1 small subunit	transketolase or transaldolase activity transferase activity acetolactate synthase activity catalytic activity enzyme regulator activity acetolactate synthase regulator activity molecular function regulator activity	oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process organic substance metabolic process isoleucine biosynthetic process organic substance biosynthetic process small molecule metabolic process branched-chain amino acid metabolic process organonitrogen compound metabolic process oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process organic substance metabolic process isoleucine biosynthetic process organic substance biosynthetic process small molecule metabolic process branched-chain amino acid metabolic process organonitrogen compound metabolic process small molecule biosynthetic process cellular metabolic process carboxylic acid metabolic process primary metabolic process amino acid biosynthetic process biosynthetic process branched-chain amino acid biosynthetic process metabolic process cellular process isoleucine metabolic process alpha-amino acid biosynthetic process valine biosynthetic process valine metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol protein-containing complex catalytic complex acetolactate synthase complex transferase complex
B [auth A], D [auth B], F [auth C], H [auth D]	Acetolactate synthase isozyme 1 large subunit	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding flavin adenine dinucleotide binding nucleoside phosphate binding organic cyclic compound binding anion binding nucleotide binding heterocyclic compound binding transketolase or transaldolase activity transferase activity cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding flavin adenine dinucleotide binding nucleoside phosphate binding organic cyclic compound binding anion binding nucleotide binding heterocyclic compound binding transketolase or transaldolase activity transferase activity acetolactate synthase activity catalytic activity vitamin binding thiamine pyrophosphate binding quaternary ammonium group binding sulfur compound binding	oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process organic substance metabolic process isoleucine biosynthetic process organic substance biosynthetic process small molecule metabolic process branched-chain amino acid metabolic process organonitrogen compound metabolic process oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process organic substance metabolic process isoleucine biosynthetic process organic substance biosynthetic process small molecule metabolic process branched-chain amino acid metabolic process organonitrogen compound metabolic process small molecule biosynthetic process cellular metabolic process carboxylic acid metabolic process primary metabolic process amino acid biosynthetic process biosynthetic process branched-chain amino acid biosynthetic process metabolic process cellular process isoleucine metabolic process alpha-amino acid biosynthetic process valine biosynthetic process valine metabolic process	protein-containing complex intracellular anatomical structure catalytic complex acetolactate synthase complex transferase complex cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth E], C [auth F], E [auth G], G [auth H]	IPR039557	AHAS, ACT domain	Domain
A [auth E], C [auth F], E [auth G], G [auth H]	IPR004789	Acetolactate synthase, small subunit	Family
A [auth E], C [auth F], E [auth G], G [auth H]	IPR045865	ACT-like domain	Homologous Superfamily
A [auth E], C [auth F], E [auth G], G [auth H]	IPR002912	ACT domain	Domain
B [auth A], D [auth B], F [auth C], H [auth D]	IPR045229	Thiamine pyrophosphate enzyme	Family
B [auth A], D [auth B], F [auth C], H [auth D]	IPR012001	Thiamine pyrophosphate enzyme, N-terminal TPP-binding domain	Domain
B [auth A], D [auth B], F [auth C], H [auth D]	IPR000399	TPP-binding enzyme, conserved site	Conserved Site
B [auth A], D [auth B], F [auth C], H [auth D]	IPR012000	Thiamine pyrophosphate enzyme, central domain	Domain
B [auth A], D [auth B], F [auth C], H [auth D]	IPR012846	Acetolactate synthase, large subunit, biosynthetic	Family
B [auth A], D [auth B], F [auth C], H [auth D]	IPR029061	Thiamin diphosphate-binding fold	Homologous Superfamily
B [auth A], D [auth B], F [auth C], H [auth D]	IPR039368	Acetolactate synthase large subunit, TPP binding domain	Domain
B [auth A], D [auth B], F [auth C], H [auth D]	IPR029035	DHS-like NAD/FAD-binding domain superfamily	Homologous Superfamily
B [auth A], D [auth B], F [auth C], H [auth D]	IPR011766	Thiamine pyrophosphate enzyme, TPP-binding	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.