Annotations: 4AIB

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C	HRM	e4aibC1	A: beta barrels	X: YrdC/RibB	H: YrdC/RibB	T: YrdC/RibB	F: HRM	ECOD (v294.2)
D	HRM	e4aibD1	A: beta barrels	X: YrdC/RibB	H: YrdC/RibB	T: YrdC/RibB	F: HRM	ECOD (v294.2)
B	HRM	e4aibB1	A: beta barrels	X: YrdC/RibB	H: YrdC/RibB	T: YrdC/RibB	F: HRM	ECOD (v294.2)
A	HRM	e4aibA1	A: beta barrels	X: YrdC/RibB	H: YrdC/RibB	T: YrdC/RibB	F: HRM	ECOD (v294.2)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	2.40.37.10	Mainly Beta	Beta Barrel	Lyase, Ornithine Decarboxylase	Chain A, domain 1	CATH (4.3.0)
C	3.20.20.10	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Alanine racemase	CATH (4.3.0)
D	2.40.37.10	Mainly Beta	Beta Barrel	Lyase, Ornithine Decarboxylase	Chain A, domain 1	CATH (4.3.0)
D	3.20.20.10	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Alanine racemase	CATH (4.3.0)
B	2.40.37.10	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	2.40.37.10	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, C, D	ORNITHINE DECARBOXYLASE	ornithine decarboxylase activity carboxy-lyase activity lyase activity catalytic activity carbon-carbon lyase activity	oxoacid metabolic process amino acid metabolic process organic acid metabolic process alpha-amino acid metabolic process arginine metabolic process biogenic amine biosynthetic process putrescine metabolic process small molecule metabolic process putrescine biosynthetic process from arginine, via ornithine carboxylic acid metabolic process primary metabolic process polyamine metabolic process L-amino acid metabolic process putrescine biosynthetic process oxoacid metabolic process amino acid metabolic process organic acid metabolic process alpha-amino acid metabolic process arginine metabolic process biogenic amine biosynthetic process putrescine metabolic process small molecule metabolic process putrescine biosynthetic process from arginine, via ornithine carboxylic acid metabolic process primary metabolic process polyamine metabolic process L-amino acid metabolic process putrescine biosynthetic process amine metabolic process proteinogenic amino acid metabolic process biosynthetic process amine biosynthetic process polyamine biosynthetic process putrescine biosynthetic process from arginine metabolic process cellular process biogenic amine metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm

Chains	Accession	Name	Type
A, B, C, D	IPR002433	Ornithine decarboxylase	Family
A, B, C, D	IPR029066	PLP-binding barrel	Homologous Superfamily
A, B, C, D	IPR009006	Alanine racemase/group IV decarboxylase, C-terminal	Homologous Superfamily
A, B, C, D	IPR000183	Ornithine/DAP/Arg decarboxylase	Family
A, B, C, D	IPR022657	Orn/DAP/Arg decarboxylase 2, conserved site	Conserved Site
A, B, C, D	IPR022644	Orn/DAP/Arg decarboxylase 2, N-terminal	Domain
A, B, C, D	IPR022653	Orn/DAP/Arg decarboxylase 2, pyridoxal-phosphate binding site	Binding Site

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.

4AIB | pdb_00004aib