Annotations: 4FCX

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth B]	SCOP2B Superfamily	Mre11 C-terminal domain-like	8090753	3002453	SCOP2B (2022-06-29)
A [auth B]	SCOP2B Superfamily	Metallo-dependent phosphatases	8090752	3001067	SCOP2B (2022-06-29)
B [auth A]	SCOP2B Superfamily	Metallo-dependent phosphatases	8090752	3001067	SCOP2B (2022-06-29)
B [auth A]	SCOP2B Superfamily	Mre11 C-terminal domain-like	8090753	3002453	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)
B [auth A]	Metallophos_2_1	e4fcxA1	A: a+b four layers	X: Carbon-nitrogen hydrolase-like	H: Metallo-dependent phosphatases (From Topology)	T: Metallo-dependent phosphatases	F: Metallophos_2_1	ECOD (1.6)
B [auth A]	Mre11_DNA_bind_N	e4fcxA2	A: a+b four layers	X: Mre11 nuclease C-terminal domain (From Topology)	H: Mre11 nuclease C-terminal domain (From Topology)	T: Mre11 nuclease C-terminal domain	F: Mre11_DNA_bind_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth B]	3.60.21.10	Alpha Beta	4-Layer Sandwich	Purple Acid Phosphatase	chain A, domain 2	CATH (4.3.0)
A [auth B]	3.30.110.110	Alpha Beta	2-Layer Sandwich	Translation Initiation Factor IF3	Mre11, capping domain	CATH (4.3.0)
B [auth A]	3.60.21.10	Alpha Beta	4-Layer Sandwich	Purple Acid Phosphatase	chain A, domain 2	CATH (4.3.0)
B [auth A]	3.30.110.110	Alpha Beta	2-Layer Sandwich	Translation Initiation Factor IF3	Mre11, capping domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth A]	PF00149	Calcineurin-like phosphoesterase (Metallophos)	Calcineurin-like phosphoesterase	This family includes a diverse range of phosphoesterases [1], including protein phosphoserine phosphatases, nucleotidases, sphingomyelin phosphodiesterases and 2'-3' cAMP phosphodiesterases as well as nucleases such as bacterial SbcD Swiss:P13457 or ...	This family includes a diverse range of phosphoesterases [1], including protein phosphoserine phosphatases, nucleotidases, sphingomyelin phosphodiesterases and 2'-3' cAMP phosphodiesterases as well as nucleases such as bacterial SbcD Swiss:P13457 or yeast MRE11 Swiss:P32829. The most conserved regions in this superfamily centre around the metal chelating residues.	Domain
A [auth B], B [auth A]	PF04152	Mre11 DNA-binding presumed domain (Mre11_DNA_bind)	Mre11 DNA-binding presumed domain	The Mre11 complex is a multi-subunit nuclease that is composed of Mre11, Rad50 and Nbs1/Xrs2, and is involved in checkpoint signalling and DNA replication [1]. Mre11 has an intrinsic DNA-binding activity that is stimulated by Rad50 on its own or in ...	The Mre11 complex is a multi-subunit nuclease that is composed of Mre11, Rad50 and Nbs1/Xrs2, and is involved in checkpoint signalling and DNA replication [1]. Mre11 has an intrinsic DNA-binding activity that is stimulated by Rad50 on its own or in combination with Nbs1 [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth A]	DNA repair protein rad32	nuclease activity hydrolase activity, acting on ester bonds hydrolase activity catalytic activity DNA binding binding DNA end binding nucleic acid binding DNA exonuclease activity catalytic activity, acting on a nucleic acid 3'-5' exonuclease activity DNA exonuclease activity, producing 5'-phosphomonoesters DNA nuclease activity exonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters nuclease activity hydrolase activity, acting on ester bonds hydrolase activity catalytic activity DNA binding binding DNA end binding nucleic acid binding DNA exonuclease activity catalytic activity, acting on a nucleic acid 3'-5' exonuclease activity DNA exonuclease activity, producing 5'-phosphomonoesters DNA nuclease activity exonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters single-stranded DNA exodeoxyribonuclease activity catalytic activity, acting on DNA 3'-5'-DNA exonuclease activity exonuclease activity single-stranded DNA 3'-5' DNA exonuclease 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 double-stranded DNA 3'-5' DNA exonuclease activity double-stranded DNA exodeoxyribonuclease activity DNA endonuclease activity endonuclease activity single-stranded DNA endodeoxyribonuclease activity	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 homologous recombination sexual reproduction reproductive process meiotic cell cycle process cellular component organization meiosis I meiotic nuclear division cell cycle cellular component organization or biogenesis reciprocal homologous recombination cell cycle process DNA recombination meiotic cell cycle organelle fission reciprocal meiotic recombination nuclear division organelle organization meiosis I cell cycle process telomere organization chromosome organization telomere maintenance meiotic DNA double-strand break formation regulation of cellular process regulation of cell cycle phase transition DNA damage checkpoint signaling signaling G2/M transition of mitotic cell cycle mitotic G2 DNA damage checkpoint signaling negative regulation of biological process negative regulation of cell cycle cell cycle phase transition intracellular signal transduction mitotic cell cycle negative regulation of mitotic cell cycle mitotic G2/M transition checkpoint cell communication regulation of mitotic cell cycle mitotic DNA integrity checkpoint signaling mitotic DNA damage checkpoint signaling negative regulation of cellular process negative regulation of cell cycle phase transition signal transduction regulation of cell cycle cell cycle G2/M phase transition regulation of biological process negative regulation of mitotic cell cycle phase transition regulation of G2/M transition of mitotic cell cycle regulation of cell cycle process biological regulation DNA integrity checkpoint signaling regulation of cell cycle G2/M phase transition negative regulation of cell cycle process cell cycle checkpoint signaling regulation of mitotic cell cycle phase transition mitotic cell cycle checkpoint signaling mitotic cell cycle process negative regulation of cell cycle G2/M phase transition signal transduction in response to DNA damage negative regulation of G2/M transition of mitotic cell cycle mitotic cell cycle phase transition recombinational repair double-strand break repair via homologous recombination mitochondrial double-strand break repair mitochondrial double-strand break repair via homologous recombination mitotic intra-S DNA damage checkpoint signaling double-strand break repair involved in meiotic recombination double-strand break repair via nonhomologous end joining	intracellular organelle cellular anatomical structure intracellular anatomical structure organelle membraneless organelle chromosome, telomeric repeat region intracellular membraneless organelle chromosome chromosome, telomeric region chromosomal region membrane-bounded organelle protein-containing complex Mre11 complex nucleus intracellular organelle cellular anatomical structure intracellular anatomical structure organelle membraneless organelle chromosome, telomeric repeat region intracellular membraneless organelle chromosome chromosome, telomeric region chromosomal region membrane-bounded organelle protein-containing complex Mre11 complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle site of double-strand break site of DNA damage

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR038487	Mre11, capping domain	Homologous Superfamily
A [auth B], B [auth A]	IPR003701	DNA double-strand break repair protein Mre11	Family
A [auth B], B [auth A]	IPR004843	Calcineurin-like phosphoesterase domain, ApaH type	Domain
A [auth B], B [auth A]	IPR029052	Metallo-dependent phosphatase-like	Homologous Superfamily
A [auth B], B [auth A]	IPR007281	Mre11, DNA-binding	Domain
A [auth B], B [auth A]	IPR041796	DNA double-strand break repair protein Mre11, N-terminal metallophosphatase domain	Domain

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.