Annotations: 3TND

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
H	UNK_F_TYPE	e3tndH1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: AbrB	F: UNK_F_TYPE	ECOD (1.6)
F	UNK_F_TYPE	e3tndF1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: AbrB	F: UNK_F_TYPE	ECOD (1.6)
G	PIN	e3tndG1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PIN	ECOD (1.6)
E	PIN	e3tndE1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PIN	ECOD (1.6)
C	PIN	e3tndC1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PIN	ECOD (1.6)
A	PIN	e3tndA1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PIN	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.10.260.10	Mainly Beta	Ribbon	Pemi-like Protein 1	Chain: D	CATH (4.3.0)
G	3.40.50.1010	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	5'-nuclease	CATH (4.3.0)
E	3.40.50.1010	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	5'-nuclease	CATH (4.3.0)
C	3.40.50.1010	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	5'-nuclease	CATH (4.3.0)
A	3.40.50.1010	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	5'-nuclease	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C, E, G	PF01850	PIN domain (PIN)	PIN domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D, F, H	Antitoxin VapB	DNA binding binding nucleic acid binding	-	-
A, C, E, G	tRNA(fMet)-specific endonuclease VapC	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding endonuclease activity nuclease activity catalytic activity, acting on a nucleic acid catalytic activity catalytic activity, acting on RNA RNA nuclease activity	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D, F, H	IPR051734	Type II toxin-antitoxin VapB antitoxins	Family
B, D, F, H	IPR047976	Antitoxin VapB2-like	Family
B, D, F, H	IPR037914	SpoVT-AbrB domain superfamily	Homologous Superfamily
B, D, F, H	IPR007159	SpoVT-AbrB domain	Domain
A, C, E, G	IPR002716	PIN domain	Domain
A, C, E, G	IPR029060	PIN-like domain superfamily	Homologous Superfamily
A, C, E, G	IPR022907	VapC family	Family
A, C, E, G	IPR050556	Type II toxin-antitoxin system RNase	Family

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.