Annotations: 3TAI

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PK_Tyr_Ser-Thr	e3taiB1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: PK_Tyr_Ser-Thr	ECOD (v294.1)
A	NurA	e3taiA1	A: a/b three-layered sandwiches	X: Ribonuclease H-like	H: Ribonuclease H-like	T: Ribonuclease H-like	F: NurA	ECOD (v294.1)

Chains	Accession	Name	Description	Comments	Source
A, B	PF09376	NurA domain (NurA)	NurA domain	This family includes NurA a nuclease exhibiting both single-stranded endonuclease activity and 5'-3' exonuclease activity on single-stranded and double-stranded DNA from the hyperthermophilic archaeon Sulfolobus acidocaldarius [2].	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	DNA double-strand break repair protein nurA	hydrolase activity, acting on ester bonds nuclease activity catalytic activity, acting on a nucleic acid hydrolase activity exonuclease activity catalytic activity DNA binding binding nucleic acid binding endonuclease activity cation binding ion binding metal ion binding small molecule binding	cellular response to stimulus response to stimulus primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process cellular response to stress DNA damage response response to stress metabolic process cellular process macromolecule metabolic process DNA repair	-