Annotations: 4LUS

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Ala_racemase_C	e4lusA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Ala_racemase_C	ECOD (1.6)
A	Ala_racemase_N	e4lusA2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Ala_racemase_N	ECOD (1.6)
D	Ala_racemase_C	e4lusD2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Ala_racemase_C	ECOD (1.6)
D	Ala_racemase_N	e4lusD1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Ala_racemase_N	ECOD (1.6)
C	Ala_racemase_C	e4lusC2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Ala_racemase_C	ECOD (1.6)
C	Ala_racemase_N	e4lusC1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Ala_racemase_N	ECOD (1.6)
B	Ala_racemase_C	e4lusB2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Ala_racemase_C	ECOD (1.6)
B	Ala_racemase_N	e4lusB1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Ala_racemase_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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)
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)
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)
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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C, D	PF00842	Alanine racemase, C-terminal domain (Ala_racemase_C)	Alanine racemase, C-terminal domain	-	Domain
A, C, D	PF01168	Alanine racemase, N-terminal domain (Ala_racemase_N)	Alanine racemase, N-terminal domain	-	Domain
B	PF00842	Alanine racemase, C-terminal domain (Ala_racemase_C)	Alanine racemase, C-terminal domain	-	Domain
B	PF01168	Alanine racemase, N-terminal domain (Ala_racemase_N)	Alanine racemase, N-terminal domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, D	Alanine racemase	vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding binding organic cyclic compound binding anion binding heterocyclic compound binding small molecule binding racemase activity, acting on amino acids and derivatives isomerase activity racemase and epimerase activity alanine racemase activity racemase and epimerase activity, acting on amino acids and derivatives vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding binding organic cyclic compound binding anion binding heterocyclic compound binding small molecule binding racemase activity, acting on amino acids and derivatives isomerase activity racemase and epimerase activity alanine racemase activity racemase and epimerase activity, acting on amino acids and derivatives amino-acid racemase activity catalytic activity	oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process D-alanine metabolic process carboxylic acid biosynthetic process non-proteinogenic amino acid metabolic process organic substance metabolic process D-amino acid metabolic process organic substance biosynthetic process small molecule metabolic process oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process D-alanine metabolic process carboxylic acid biosynthetic process non-proteinogenic amino acid metabolic process organic substance metabolic process D-amino acid metabolic process organic substance biosynthetic process small molecule metabolic process alanine biosynthetic process non-proteinogenic amino acid biosynthetic process organonitrogen compound metabolic process small molecule biosynthetic process cellular metabolic process carboxylic acid metabolic process primary metabolic process amino acid biosynthetic process biosynthetic process D-amino acid biosynthetic process metabolic process cellular process D-alanine biosynthetic process alanine metabolic process alpha-amino acid biosynthetic process	-
B	Alanine racemase	vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding binding organic cyclic compound binding anion binding heterocyclic compound binding small molecule binding racemase activity, acting on amino acids and derivatives isomerase activity racemase and epimerase activity alanine racemase activity racemase and epimerase activity, acting on amino acids and derivatives vitamin binding vitamin B6 binding pyridoxal phosphate binding ion binding binding organic cyclic compound binding anion binding heterocyclic compound binding small molecule binding racemase activity, acting on amino acids and derivatives isomerase activity racemase and epimerase activity alanine racemase activity racemase and epimerase activity, acting on amino acids and derivatives amino-acid racemase activity catalytic activity	oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process D-alanine metabolic process carboxylic acid biosynthetic process non-proteinogenic amino acid metabolic process organic substance metabolic process D-amino acid metabolic process organic substance biosynthetic process small molecule metabolic process oxoacid metabolic process cellular biosynthetic process organonitrogen compound biosynthetic process amino acid metabolic process organic acid metabolic process organic acid biosynthetic process alpha-amino acid metabolic process D-alanine metabolic process carboxylic acid biosynthetic process non-proteinogenic amino acid metabolic process organic substance metabolic process D-amino acid metabolic process organic substance biosynthetic process small molecule metabolic process alanine biosynthetic process non-proteinogenic amino acid biosynthetic process organonitrogen compound metabolic process small molecule biosynthetic process cellular metabolic process carboxylic acid metabolic process primary metabolic process amino acid biosynthetic process biosynthetic process D-amino acid biosynthetic process metabolic process cellular process D-alanine biosynthetic process alanine metabolic process alpha-amino acid biosynthetic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, D	IPR029066	PLP-binding barrel	Homologous Superfamily
A, C, D	IPR009006	Alanine racemase/group IV decarboxylase, C-terminal	Homologous Superfamily
A, C, D	IPR020622	Alanine racemase, pyridoxal-phosphate attachment site	Binding Site
A, C, D	IPR011079	Alanine racemase, C-terminal	Domain
A, C, D	IPR001608	Alanine racemase, N-terminal	Domain
A, C, D	IPR000821	Alanine racemase	Family
B	IPR029066	PLP-binding barrel	Homologous Superfamily
B	IPR009006	Alanine racemase/group IV decarboxylase, C-terminal	Homologous Superfamily
B	IPR020622	Alanine racemase, pyridoxal-phosphate attachment site	Binding Site
B	IPR011079	Alanine racemase, C-terminal	Domain
B	IPR001608	Alanine racemase, N-terminal	Domain
B	IPR000821	Alanine racemase	Family

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, C, D	KCX	Parent Component: LYS
A, C, D	LLP	Parent Component: LYS RESID: AA0119 PSI-MOD : N6-pyridoxal phosphate-L-lysine MOD:00128
B	LLP	Parent Component: LYS RESID: AA0119 , AA0119 PSI-MOD : N6-pyridoxal phosphate-L-lysine MOD:00128 , N6-pyridoxal phosphate-L-lysine MOD:00128

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.