Annotations: 5YPY

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	ACT_5	e5ypyB1	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_5	ECOD (1.6)
A	ACT_5	e5ypyA1	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_5	ECOD (1.6)
C	ACT_5	e5ypyC1	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_5	ECOD (1.6)
D	ACT_5	e5ypyD1	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_5	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.70.260	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	ACT domain	CATH (4.3.0)
A	3.30.70.260	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	ACT domain	CATH (4.3.0)
C	3.30.70.260	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	ACT domain	CATH (4.3.0)
D	3.30.70.260	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	ACT domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	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 small molecule biosynthetic process cellular biosynthetic process cellular metabolic 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 oxoacid metabolic process small molecule biosynthetic process cellular biosynthetic process cellular metabolic 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 metabolic process small molecule metabolic process cellular 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	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol protein-containing complex catalytic complex acetolactate synthase complex transferase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR039557	AHAS, ACT domain	Domain
A, B, C, D	IPR004789	Acetolactate synthase, small subunit	Family
A, B, C, D	IPR045865	ACT-like domain	Homologous Superfamily
A, B, C, D	IPR002912	ACT domain	Domain

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.