Annotations: 4PB3

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	DNA_pol_A	e4pb3B1	A: alpha arrays	X: Ribosomal protein L19 (L19e) C-terminal domain	H: Ribosomal protein L19 (L19e) C-terminal domain	T: Ribosomal protein L19 (L19e) C-terminal domain	F: DNA_pol_A	ECOD (v295)
A	SLT	e4pb3A1	A: alpha arrays	X: Alpha-beta plaits	H: Protease propeptides/inhibitors	T: Protease propeptides/inhibitors	F: SLT	ECOD (v295)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.40.37.20	Mainly Beta	Beta Barrel	Lyase, Ornithine Decarboxylase	Chain A, domain 1	CATH (4.3.0)
B	3.20.20.10	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Alanine racemase	CATH (4.3.0)
A	2.40.37.20	Mainly Beta	Beta Barrel	Lyase, Ornithine Decarboxylase	Chain A, domain 1	CATH (4.3.0)
A	3.20.20.10	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Alanine racemase	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	D-threo-3-hydroxyaspartate dehydratase	lyase activity ammonia-lyase activity catalytic activity carbon-nitrogen lyase activity vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding binding anion binding heterocyclic compound binding small molecule binding D-serine ammonia-lyase activity	catabolic process oxoacid metabolic process non-proteinogenic amino acid catabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process non-proteinogenic amino acid metabolic process carboxylic acid catabolic process D-amino acid metabolic process metabolic process cellular process small molecule metabolic process small molecule catabolic process D-amino acid catabolic process catabolic process oxoacid metabolic process non-proteinogenic amino acid catabolic process carboxylic acid metabolic process amino acid metabolic process primary metabolic process non-proteinogenic amino acid metabolic process carboxylic acid catabolic process D-amino acid metabolic process metabolic process cellular process small molecule metabolic process small molecule catabolic process D-amino acid catabolic process amino acid catabolic process D-serine catabolic process	-

Chains	Accession	Name	Type
A, B	IPR029066	PLP-binding barrel	Homologous Superfamily
A, B	IPR042208	D-serine dehydratase-like domain superfamily	Homologous Superfamily
A, B	IPR026956	D-serine dehydratase-like domain	Domain
A, B	IPR051466	D-amino acid metabolism enzyme	Family
A, B	IPR001608	Alanine racemase, N-terminal	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

4PB3 | pdb_00004pb3