Annotations: 4XCH

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4xcha_	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	Autoinducer-2 production protein LuxS	Autoinducer-2 production protein LuxS	(Streptococcus suis ) [TaxId: 1307 ],	SCOPe (2.08)
B	d4xchb_	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	Autoinducer-2 production protein LuxS	Autoinducer-2 production protein LuxS	(Streptococcus suis ) [TaxId: 1307 ],	SCOPe (2.08)
C	d4xchc_	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	Autoinducer-2 production protein LuxS	Autoinducer-2 production protein LuxS	(Streptococcus suis ) [TaxId: 1307 ],	SCOPe (2.08)
D	d4xchd_	Alpha and beta proteins (a+b)	LuxS/MPP-like metallohydrolase	LuxS/MPP-like metallohydrolase	Autoinducer-2 production protein LuxS	Autoinducer-2 production protein LuxS	(Streptococcus suis ) [TaxId: 1307 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	LuxS-like	8064634	4003557	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	LuxS/MPP-like metallohydrolase	8064635	3001831	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	LuxS/MPP-like metallohydrolase	8064635	3001831	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	LuxS/MPP-like metallohydrolase	8064635	3001831	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	LuxS/MPP-like metallohydrolase	8064635	3001831	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF02664	e4xchA1	A: a+b two layers	X: LuxS, MPP, ThrRS/AlaRS common domain	H: LuxS, MPP, ThrRS/AlaRS common domain	T: LuxS/MPP-like metallohydrolase	F: PF02664	ECOD (1.6)
B	PF02664	e4xchB1	A: a+b two layers	X: LuxS, MPP, ThrRS/AlaRS common domain	H: LuxS, MPP, ThrRS/AlaRS common domain	T: LuxS/MPP-like metallohydrolase	F: PF02664	ECOD (1.6)
C	PF02664	e4xchC1	A: a+b two layers	X: LuxS, MPP, ThrRS/AlaRS common domain	H: LuxS, MPP, ThrRS/AlaRS common domain	T: LuxS/MPP-like metallohydrolase	F: PF02664	ECOD (1.6)
D	PF02664	e4xchD1	A: a+b two layers	X: LuxS, MPP, ThrRS/AlaRS common domain	H: LuxS, MPP, ThrRS/AlaRS common domain	T: LuxS/MPP-like metallohydrolase	F: PF02664	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.1360.80	Alpha Beta	2-Layer Sandwich	Gyrase A	domain 2	CATH (4.3.0)
B	3.30.1360.80	Alpha Beta	2-Layer Sandwich	Gyrase A	domain 2	CATH (4.3.0)
C	3.30.1360.80	Alpha Beta	2-Layer Sandwich	Gyrase A	domain 2	CATH (4.3.0)
D	3.30.1360.80	Alpha Beta	2-Layer Sandwich	Gyrase A	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF02664	S-Ribosylhomocysteinase (LuxS) (LuxS)	S-Ribosylhomocysteinase (LuxS)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	S-ribosylhomocysteine lyase	carbon-sulfur lyase activity S-ribosylhomocysteine lyase activity lyase activity catalytic activity cation binding transition metal ion binding iron ion binding ion binding binding metal ion binding small molecule binding	regulation of biological process response to stimulus signaling quorum sensing biological regulation cell-cell signaling detection of cell density detection of biotic stimulus response to biotic stimulus cell communication detection of stimulus cellular process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR003815	S-ribosylhomocysteinase (LuxS)	Family
A, B, C, D	IPR011249	Metalloenzyme, LuxS/M16 peptidase-like	Homologous Superfamily
A, B, C, D	IPR037005	S-ribosylhomocysteinase (LuxS) superfamily	Homologous Superfamily

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.