2C2B

Crystallographic structure of Arabidopsis thaliana Threonine synthase complexed with pyridoxal phosphate and S-adenosylmethionine

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2c2ba_	Alpha and beta proteins (a/b)	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Threonine synthase	MOUSE-EAR CRESS (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
B	d2c2bb_	Alpha and beta proteins (a/b)	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Threonine synthase	MOUSE-EAR CRESS (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
C	d2c2bc_	Alpha and beta proteins (a/b)	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Threonine synthase	MOUSE-EAR CRESS (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
D	d2c2bd_	Alpha and beta proteins (a/b)	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Threonine synthase	MOUSE-EAR CRESS (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
E	d2c2be_	Alpha and beta proteins (a/b)	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Threonine synthase	MOUSE-EAR CRESS (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)
F	d2c2bf_	Alpha and beta proteins (a/b)	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Tryptophan synthase beta subunit-like PLP-dependent enzymes	Threonine synthase	MOUSE-EAR CRESS (Arabidopsis thaliana ) [TaxId: 3702 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Tryptophan synthase beta subunit-like PLP-dependent enzymes	8032594	3001427	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Tryptophan synthase beta subunit-like PLP-dependent enzymes	8032594	3001427	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Tryptophan synthase beta subunit-like PLP-dependent enzymes	8032594	3001427	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Tryptophan synthase beta subunit-like PLP-dependent enzymes	8032594	3001427	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Tryptophan synthase beta subunit-like PLP-dependent enzymes	8032594	3001427	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Tryptophan synthase beta subunit-like PLP-dependent enzymes	8032594	3001427	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	PF00291	e2c2bA3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Tryptophan synthase beta subunit-like PLP-dependent enzymes (From Topology)	T: Tryptophan synthase beta subunit-like PLP-dependent enzymes	F: PF00291	ECOD (1.6)
A	F_UNCLASSIFIED	e2c2bA1	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)
B	PF00291	e2c2bB3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Tryptophan synthase beta subunit-like PLP-dependent enzymes (From Topology)	T: Tryptophan synthase beta subunit-like PLP-dependent enzymes	F: PF00291	ECOD (1.6)
B	F_UNCLASSIFIED	e2c2bB1	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)
C	PF00291	e2c2bC3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Tryptophan synthase beta subunit-like PLP-dependent enzymes (From Topology)	T: Tryptophan synthase beta subunit-like PLP-dependent enzymes	F: PF00291	ECOD (1.6)
C	F_UNCLASSIFIED	e2c2bC1	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)
D	PF00291	e2c2bD1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Tryptophan synthase beta subunit-like PLP-dependent enzymes (From Topology)	T: Tryptophan synthase beta subunit-like PLP-dependent enzymes	F: PF00291	ECOD (1.6)
D	F_UNCLASSIFIED	e2c2bD2	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)
E	PF00291	e2c2bE1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Tryptophan synthase beta subunit-like PLP-dependent enzymes (From Topology)	T: Tryptophan synthase beta subunit-like PLP-dependent enzymes	F: PF00291	ECOD (1.6)
E	F_UNCLASSIFIED	e2c2bE2	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)
F	PF00291	e2c2bF2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Tryptophan synthase beta subunit-like PLP-dependent enzymes (From Topology)	T: Tryptophan synthase beta subunit-like PLP-dependent enzymes	F: PF00291	ECOD (1.6)
F	F_UNCLASSIFIED	e2c2bF3	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.1100	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
B	3.40.50.1100	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
C	3.40.50.1100	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
D	3.40.50.1100	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
E	3.40.50.1100	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
F	3.40.50.1100	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	PF00291	Pyridoxal-phosphate dependent enzyme (PALP)	Pyridoxal-phosphate dependent enzyme	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F	THREONINE SYNTHASE 1, CHLOROPLASTIC	carbon-oxygen lyase activity, acting on phosphates threonine synthase activity lyase activity catalytic activity carbon-oxygen lyase activity vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding binding organic cyclic compound binding anion binding heterocyclic compound binding small molecule binding	oxoacid metabolic process cellular biosynthetic process aspartate family amino acid biosynthetic process organonitrogen compound biosynthetic process aspartate family amino acid metabolic 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 organic substance biosynthetic process threonine metabolic process small molecule metabolic process oxoacid metabolic process cellular biosynthetic process aspartate family amino acid biosynthetic process organonitrogen compound biosynthetic process aspartate family amino acid metabolic 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 organic substance biosynthetic process threonine metabolic process small molecule metabolic process organonitrogen compound metabolic process small molecule biosynthetic process cellular metabolic 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 threonine biosynthetic process proteinogenic amino acid biosynthetic process metabolic process cellular process alpha-amino acid biosynthetic process	cell periphery plasma membrane membrane cellular anatomical entity membrane-bounded organelle intracellular organelle intracellular anatomical structure plastid organelle cytoplasm intracellular membrane-bounded organelle chloroplast plastid stroma chloroplast stroma

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR036052	Tryptophan synthase beta chain-like, PALP domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR001926	Tryptophan synthase beta chain-like, PALP domain	Domain
A, B, C, D, E A, B, C, D, E, F	IPR000634	Serine/threonine dehydratase, pyridoxal-phosphate-binding site	Binding Site
A, B, C, D, E A, B, C, D, E, F	IPR004450	Threonine synthase-like	Family

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.