9Q9K | pdb_00009q9k

Cryo-EM structure of human Mre11-Rad50 (MR) complex bound to DNA and telomeric factor TRF2 fragment (438-542)


Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
G [auth D]SCOP2B SuperfamilyMre11 C-terminal domain-like 8090757 3002453 SCOP2B (2022-06-29)
G [auth D]SCOP2B SuperfamilyMetallo-dependent phosphatases 8090756 3001067 SCOP2B (2022-06-29)
H [auth E]SCOP2B SuperfamilyMetallo-dependent phosphatases 8090756 3001067 SCOP2B (2022-06-29)
H [auth E]SCOP2B SuperfamilyMre11 C-terminal domain-like 8090757 3002453 SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
E [auth A],
F [auth B]
PF13558SbcC/RAD50-like, Walker B motif (SbcC_Walker_B)SbcC/RAD50-like, Walker B motifThis entry represents the Walker B domain of RAD50 from eukaryotes and the prokaryotic homologue SbcCD complex subunit C. RAD50-ATPase forms a complex with Mre11-nuclease that detects and processes diverse and obstructed DNA ends. This domain is sepa ...This entry represents the Walker B domain of RAD50 from eukaryotes and the prokaryotic homologue SbcCD complex subunit C. RAD50-ATPase forms a complex with Mre11-nuclease that detects and processes diverse and obstructed DNA ends. This domain is separated of the Walker A domain by a long coiled-coil domain and forms the nucleotide-binding domain (NBD) when the coiled coils fold back on themselves and bring together Walker A and B domains [1,2,3,4]. Two RAD50-NBDs forms heterotetramers with a Mre11 nuclease dimer that assemble as catalytic head module that binds and cleaves DNA in an ATP-dependent reaction. Through secondary structural analysis, it has been suggested that there is a wide structural conservation in the Rad50/SMC protein family as seen in structural similarities between RAD50's hook and ABC-ATPase MukB's elbow region [4].
Domain
E [auth A],
F [auth B]
PF13476AAA domain (AAA_23)AAA domainDomain
G [auth D],
H [auth E]
PF00149Calcineurin-like phosphoesterase (Metallophos)Calcineurin-like phosphoesteraseThis 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
G [auth D],
H [auth E]
PF04152Mre11 DNA-binding presumed domain (Mre11_DNA_bind)Mre11 DNA-binding presumed domainThe 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

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth J],
B [auth K]
Telomeric repeat-binding factor 2
C [auth P]DNA (64-MER)---
D [auth T]DNA (64-MER)---
E [auth A],
F [auth B]
DNA repair protein RAD50
G [auth D],
H [auth E]
Double-strand break repair protein MRE11

Pharos: Disease Associations Pharos Homepage Annotation

ChainsDrug Target  Associated Disease
A [auth J],
B [auth K]
PharosQ15554
E [auth A],
F [auth B]
PharosQ92878
G [auth D],
H [auth E]
PharosP49959