1N0H

Crystal Structure of Yeast Acetohydroxyacid Synthase in Complex with a Sulfonylurea Herbicide, Chlorimuron Ethyl

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Structure Motif: Primary M-CSA Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1n0ha1	Alpha and beta proteins (a/b)	DHS-like NAD/FAD-binding domain	DHS-like NAD/FAD-binding domain	Pyruvate oxidase and decarboxylase, middle domain	Acetohydroxyacid synthase catalytic subunit	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
A	d1n0ha2	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase Pyr module	Acetohydroxyacid synthase catalytic subunit	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
A	d1n0ha3	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase PP module	Acetohydroxyacid synthase catalytic subunit	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
B	d1n0hb1	Alpha and beta proteins (a/b)	DHS-like NAD/FAD-binding domain	DHS-like NAD/FAD-binding domain	Pyruvate oxidase and decarboxylase, middle domain	Acetohydroxyacid synthase catalytic subunit	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
B	d1n0hb2	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase Pyr module	Acetohydroxyacid synthase catalytic subunit	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
B	d1n0hb3	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase PP module	Acetohydroxyacid synthase catalytic subunit	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8042435	3001790	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8042434	3001790	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	DHS-like NAD/FAD-binding domain	8042432	3001728	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8042434	3001790	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8042435	3001790	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	DHS-like NAD/FAD-binding domain	8042432	3001728	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	PF00205	e1n0hA1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: DHS-like NAD/FAD-binding domain	F: PF00205	ECOD (1.6)
A	PF02775	e1n0hA3	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: PF02775	ECOD (1.6)
A	PF02776	e1n0hA2	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: PF02776	ECOD (1.6)
B	PF00205	e1n0hB1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: DHS-like NAD/FAD-binding domain	F: PF00205	ECOD (1.6)
B	PF02775	e1n0hB3	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: PF02775	ECOD (1.6)
B	PF02776	e1n0hB2	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: PF02776	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	3.40.50.1220	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	TPP-binding domain	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	3.40.50.1220	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	TPP-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	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
A, B	PF02775	Thiamine pyrophosphate enzyme, C-terminal TPP binding domain (TPP_enzyme_C)	Thiamine pyrophosphate enzyme, C-terminal TPP binding domain	-	Domain
A, B	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, B	Acetolactate synthase	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	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle protein-containing complex catalytic complex acetolactate synthase complex transferase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR045229	Thiamine pyrophosphate enzyme	Family
A, B	IPR012001	Thiamine pyrophosphate enzyme, N-terminal TPP-binding domain	Domain
A, B	IPR000399	TPP-binding enzyme, conserved site	Conserved Site
A, B	IPR012000	Thiamine pyrophosphate enzyme, central domain	Domain
A, B	IPR012846	Acetolactate synthase, large subunit, biosynthetic	Family
A, B	IPR029061	Thiamin diphosphate-binding fold	Homologous Superfamily
A, B	IPR039368	Acetolactate synthase large subunit, TPP binding domain	Domain
A, B	IPR029035	DHS-like NAD/FAD-binding domain superfamily	Homologous Superfamily
A, B	IPR011766	Thiamine pyrophosphate enzyme, TPP-binding	Domain

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

Chains	Enzyme Name	Description	Catalytic Residues
A, B	acetolactate synthase (biosynthetic) M-CSA #289	Acetolactate synthase is a thiamin pyrophosphate-dependent enzyme that combines two molecules of pyruvate in a stereospecific condensation to yield 2-acetolactate with the release of carbon dioxide. Only the S enantiomer of 2-acetolactate is formed, which is then relayed into the biosynthesis of valine and leucine. Previously it was though that this protein also requires FAD for the protein to fold correctly, although the FAD is not involved in the reaction itself however recent studies (Lonhienne T et al.) have shown that it is involved in reaction by producing the radical that initiates this reaction. It exists in two distinct forms (biosynthetic and catabolic). This entry represents the biosynthetic form that is found in plants, fungi and bacteria.	Defined by 5 residues: GLU:A-129 [auth A-139]PHE:A-191 [auth A-201]GLN:A-192 [auth A-202]LYS:A-241 [auth A-251]MET:B-572 [auth B-582] \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 4.1.3.18 (PDB Primary Data) Search M-CSA Motif + EC 4.1.3.18

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.