5X6O

Intact ATR/Mec1-ATRIP/Ddc2 complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

3.9 angstrom structure of the yeast Mec1-Ddc2 complex, a homolog of human ATR-ATRIP.

Wang, X.Ran, T.Zhang, X.Xin, J.Zhang, Z.Wu, T.Wang, W.Cai, G.

(2017) Science 358: 1206-1209

  • DOI: 10.1126/science.aan8414
  • Primary Citation of Related Structures:  
    5X6O

  • PubMed Abstract: 
  • The ataxia telangiectasia-mutated and Rad3-related (ATR) kinase is a master regulator of DNA damage response and replication stress in humans, but the mechanism of its activation remains unclear. ATR acts together with its partner ATRIP. Using cryo-electron microscopy, we determined the structure of intact Mec1-Ddc2 (the yeast homolog of ATR-ATRIP), which is poised for catalysis, at a resolution of 3 ...

    The ataxia telangiectasia-mutated and Rad3-related (ATR) kinase is a master regulator of DNA damage response and replication stress in humans, but the mechanism of its activation remains unclear. ATR acts together with its partner ATRIP. Using cryo-electron microscopy, we determined the structure of intact Mec1-Ddc2 (the yeast homolog of ATR-ATRIP), which is poised for catalysis, at a resolution of 3.9 angstroms. Mec1-Ddc2 forms a dimer of heterodimers through the PRD and FAT domains of Mec1 and the coiled-coil domain of Ddc2. The PRD and Bridge domains in Mec1 constitute critical regulatory sites. The activation loop of Mec1 is inhibited by the PRD, revealing an allosteric mechanism of kinase activation. Our study clarifies the architecture of ATR-ATRIP and provides a structural framework for the understanding of ATR regulation.


    Organizational Affiliation

    CAS Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Hefei 230026, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein kinase MEC1A [auth C]2368Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: MEC1ESR1SAD3YBR136WYBR1012
EC: 2.7.11.1
UniProt
Find proteins for P38111 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P38111 
Go to UniProtKB:  P38111
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA damage checkpoint protein LCD1B [auth G]747Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: LCD1DDC2PIE1YDR499W
UniProt
Find proteins for Q04377 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q04377 
Go to UniProtKB:  Q04377
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Basic Research ProgramChina2014CB910700
National Basic Research ProgramChina2013CB910200
National Natural Science Foundation of ChinaChina31222017

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-20
    Type: Initial release
  • Version 1.1: 2019-11-06
    Changes: Data collection, Other