Annotations: 3P96

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ACT_6	e3p96A2	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_6	ECOD (1.6)
A	ACT_PSP_2	e3p96A3	A: a+b two layers	X: Alpha-beta plaits	H: ACT-like (From Topology)	T: ACT-like	F: ACT_PSP_2	ECOD (1.6)
A	HAD	e3p96A1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: HAD-like	F: HAD	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.70.260	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	ACT domain	CATH (4.3.0)
A	3.40.50.1000	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	HAD superfamily/HAD-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF12710	haloacid dehalogenase-like hydrolase (HAD)	haloacid dehalogenase-like hydrolase	-	Family
A	PF21086	ACT domain (ACT_PSP_2)	ACT domain	This entry includes the second of the two ACT domains found N-terminal of phosphoserine phosphatase (PSP, SerB). PSPs belong to the L-2-haloacid dehalogenase-like protein superfamily. PSP is involved in serine metabolism; serine is synthesized from p ...	This entry includes the second of the two ACT domains found N-terminal of phosphoserine phosphatase (PSP, SerB). PSPs belong to the L-2-haloacid dehalogenase-like protein superfamily. PSP is involved in serine metabolism; serine is synthesized from phosphoglycerate through sequential reactions catalyzed by 3-phosphoglycerate dehydrogenase (SerA), 3-phosphoserine aminotransferase (SerC), and SerB.	Domain
A	PF13740	ACT domain (ACT_6)	ACT domain	ACT domains bind to amino acids and regulate associated enzyme domains.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Phosphoserine phosphatase SerB	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding phosphoric ester hydrolase activity hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity L-phosphoserine phosphatase activity catalytic activity	dephosphorylation phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process serine family amino acid metabolic process oxoacid metabolic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process small molecule biosynthetic process dephosphorylation phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process serine family amino acid metabolic process oxoacid metabolic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process small molecule biosynthetic process carboxylic acid metabolic process primary metabolic process L-amino acid biosynthetic process L-serine metabolic process L-serine biosynthetic process L-amino acid metabolic process proteinogenic amino acid metabolic process amino acid biosynthetic process biosynthetic process proteinogenic amino acid biosynthetic process serine family amino acid biosynthetic process alpha-amino acid biosynthetic process	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR050582	HAD-like hydrolase superfamily, SerB	Family
A	IPR036412	HAD-like superfamily	Homologous Superfamily
A	IPR023214	HAD superfamily	Homologous Superfamily
A	IPR049148	Phosphoserine phosphatase, ACT domain	Domain
A	IPR004469	Phosphoserine phosphatase	Family
A	IPR045865	ACT-like domain	Homologous Superfamily
A	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.