1OZH

The crystal structure of Klebsiella pneumoniae acetolactate synthase with enzyme-bound cofactor and with an unusual intermediate.

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	d1ozha1	Alpha and beta proteins (a/b)	DHS-like NAD/FAD-binding domain	DHS-like NAD/FAD-binding domain	Pyruvate oxidase and decarboxylase, middle domain	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
A	d1ozha2	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase Pyr module	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
A	d1ozha3	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase PP module	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
A	d1ozha4	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
B	d1ozhb1	Alpha and beta proteins (a/b)	DHS-like NAD/FAD-binding domain	DHS-like NAD/FAD-binding domain	Pyruvate oxidase and decarboxylase, middle domain	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
B	d1ozhb2	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase Pyr module	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
B	d1ozhb3	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase PP module	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
B	d1ozhb4	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
C	d1ozhc1	Alpha and beta proteins (a/b)	DHS-like NAD/FAD-binding domain	DHS-like NAD/FAD-binding domain	Pyruvate oxidase and decarboxylase, middle domain	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
C	d1ozhc2	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase Pyr module	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
C	d1ozhc3	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase PP module	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
C	d1ozhc4	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
D	d1ozhd1	Alpha and beta proteins (a/b)	DHS-like NAD/FAD-binding domain	DHS-like NAD/FAD-binding domain	Pyruvate oxidase and decarboxylase, middle domain	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
D	d1ozhd2	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase Pyr module	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	SCOPe (2.08)
D	d1ozhd3	Alpha and beta proteins (a/b)	Thiamin diphosphate-binding fold (THDP-binding)	Thiamin diphosphate-binding fold (THDP-binding)	Pyruvate oxidase and decarboxylase PP module	Catabolic acetolactate synthase	(Klebsiella pneumoniae ) [TaxId: 573 ],	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)	8037999	3001790	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8038001	3001790	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	DHS-like NAD/FAD-binding domain	8037998	3001728	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8037999	3001790	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	DHS-like NAD/FAD-binding domain	8037998	3001728	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8038001	3001790	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	DHS-like NAD/FAD-binding domain	8037998	3001728	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8038001	3001790	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8037999	3001790	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8038001	3001790	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	DHS-like NAD/FAD-binding domain	8037998	3001728	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Thiamin diphosphate-binding fold (THDP-binding)	8037999	3001790	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	TPP_enzyme_M	e1ozhA1	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)
A	TPP_enzyme_C	e1ozhA3	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)
A	TPP_enzyme_N	e1ozhA2	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)
B	TPP_enzyme_M	e1ozhB1	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	TPP_enzyme_C	e1ozhB3	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	TPP_enzyme_N	e1ozhB2	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)
C	TPP_enzyme_M	e1ozhC1	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)
C	TPP_enzyme_C	e1ozhC3	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)
C	TPP_enzyme_N	e1ozhC2	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	TPP_enzyme_M	e1ozhD1	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	TPP_enzyme_C	e1ozhD3	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	TPP_enzyme_N	e1ozhD2	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)

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)
A	1.20.5.740	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Single helix bin	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)
C	3.40.50.970	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Thiamin diphosphate (ThDP)-binding fold, Pyr/PP domains	CATH (4.3.0)
C	3.40.50.1220	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	TPP-binding domain	CATH (4.3.0)
D	3.40.50.970	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Thiamin diphosphate (ThDP)-binding fold, Pyr/PP domains	CATH (4.3.0)
D	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, C, 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
A, B, C, D	PF02775	Thiamine pyrophosphate enzyme, C-terminal TPP binding domain (TPP_enzyme_C)	Thiamine pyrophosphate enzyme, C-terminal TPP binding domain	-	Domain
A, B, C, 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, B, C, D	Acetolactate synthase, catabolic	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	butanediol metabolic process polyol metabolic process secondary alcohol metabolic process diol metabolic process organic hydroxy compound metabolic process alcohol metabolic process small molecule metabolic process metabolic process cellular process glycol metabolic process oxoacid metabolic process small molecule biosynthetic process carboxylic acid metabolic process amino acid metabolic process butanediol metabolic process polyol metabolic process secondary alcohol metabolic process diol metabolic process organic hydroxy compound metabolic process alcohol metabolic process small molecule metabolic process metabolic process cellular process glycol metabolic process oxoacid metabolic process small molecule biosynthetic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process amino acid biosynthetic process biosynthetic process isoleucine biosynthetic process branched-chain amino acid biosynthetic process branched-chain amino acid metabolic process isoleucine metabolic process alpha-amino acid biosynthetic process pyruvate family amino acid metabolic process pyruvate family amino acid biosynthetic process L-amino acid biosynthetic process L-valine biosynthetic process L-amino acid metabolic process proteinogenic amino acid metabolic process proteinogenic amino acid biosynthetic process valine metabolic process	protein-containing complex cellular anatomical structure intracellular anatomical structure catalytic complex acetolactate synthase complex transferase complex cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR045229	Thiamine pyrophosphate enzyme	Family
A, B, C, D	IPR012001	Thiamine pyrophosphate enzyme, N-terminal TPP-binding domain	Domain
A, B, C, D	IPR000399	TPP-binding enzyme, conserved site	Conserved Site
A, B, C, D	IPR012000	Thiamine pyrophosphate enzyme, central domain	Domain
A, B, C, D	IPR029061	Thiamin diphosphate-binding fold	Homologous Superfamily
A, B, C, D	IPR029035	DHS-like NAD/FAD-binding domain superfamily	Homologous Superfamily
A, B, C, D	IPR012782	Acetolactate synthase, catabolic	Family
A, B, C, D	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	acetolactate synthase (catabolic) M-CSA #722	Acetolactate synthase (ALS) is a thiamin pyrophosphate (ThDP)-dependent enzyme that combines two molecules of pyruvate to yield 2-acetolactate with the release of CO2. It exists in two distinct forms (biosynthetic and catabolic). This entry represents the catabolic form that is found only in some bacteria, and participates in butanediol fermentation. It does not contain FAD. Another oddity is that the N-3 of ALS is thought to be pyramidal while all other ThDP-dependent enzymes possess a planar N-3. This is thought to account for the unusually high kcat of ALS by increasing the acidity of the C-2 proton.	Defined by 5 residues: MET:A-394MET:A-422ASP:A-447ASP:A-474GLY:A-476 \| 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 EC: 2.2.1.6 (UniProt) Search M-CSA Motif + EC 2.2.1.6

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.