Annotations: 3QKR

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B		e3qkrB01	A: a/b three-layered sandwiches	X: Rossmann-like	H: P-loop domains-related	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F:	ECOD (v294.1)
A		e3qkrA01	A: a/b three-layered sandwiches	X: Rossmann-like	H: P-loop domains-related	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F:	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
A	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (4.3.0)
A	6.10.250.70	Special	Helix non-globular	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF13304	AAA domain, putative AbiEii toxin, Type IV TA system (AAA_21)	AAA domain, putative AbiEii toxin, Type IV TA system	Several members are annotated as being of the abortive phage resistance system, in which case the family would be acting as the toxin for a type IV toxin-antitoxin resistance system.	Domain
A	PF13476	AAA domain (AAA_23)	AAA domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	DNA double-strand break repair protein mre11	hydrolase activity, acting on ester bonds nuclease activity catalytic activity, acting on a nucleic acid 3'-5' exonuclease activity hydrolase activity exonuclease activity catalytic activity DNA binding binding DNA end binding nucleic acid binding DNA endonuclease activity endonuclease activity catalytic activity, acting on DNA hydrolase activity, acting on ester bonds nuclease activity catalytic activity, acting on a nucleic acid 3'-5' exonuclease activity hydrolase activity exonuclease activity catalytic activity DNA binding binding DNA end binding nucleic acid binding DNA endonuclease activity endonuclease activity catalytic activity, acting on DNA DNA nuclease activity DNA secondary structure binding Y-form DNA binding cation binding manganese ion binding transition metal ion binding ion binding metal ion binding small molecule binding identical protein binding protein binding	cellular response to stimulus double-strand break repair response to stimulus DNA double-strand break processing 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 cellular response to stimulus double-strand break repair response to stimulus DNA double-strand break processing 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	-
B	DNA double-strand break repair rad50 ATPase	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity cation binding transition metal ion binding zinc ion binding metal ion binding identical protein binding protein binding	cellular response to stimulus double-strand break repair 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	-
A	DNA double-strand break repair rad50 ATPase	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity cation binding transition metal ion binding zinc ion binding metal ion binding identical protein binding protein binding	cellular response to stimulus double-strand break repair 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	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C	IPR054745	DNA double-strand break repair protein Mre11, thermococcales	Family
C	IPR054741	DNA double-strand break repair protein Mre11, second domain	Domain
C	IPR004843	Calcineurin-like, phosphoesterase domain	Domain
C	IPR029052	Metallo-dependent phosphatase-like	Homologous Superfamily
C	IPR032885	DNA double-strand break repair protein Mre11, archaea-type	Family
C	IPR050535	DNA Repair and Maintenance Complex Component	Family
C	IPR041796	DNA double-strand break repair protein Mre11, N-terminal metallophosphatase domain	Domain
B	IPR022982	DNA double-strand break repair Rad50 ATPase, archaeal type	Family
B	IPR013134	RAD50, zinc hook	Domain
B	IPR038729	Rad50/SbcC-type AAA domain	Domain
B	IPR003959	ATPase, AAA-type, core	Domain
B	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A	IPR022982	DNA double-strand break repair Rad50 ATPase, archaeal type	Family
A	IPR013134	RAD50, zinc hook	Domain
A	IPR038729	Rad50/SbcC-type AAA domain	Domain
A	IPR003959	ATPase, AAA-type, core	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

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.