7WZR | pdb_00007wzr

Cryo-EM structure of Mec1-HU

• PDB DOI: https://doi.org/10.2210/pdb7WZR/pdb
• EM Map EMD-32912: EMDB EMDataResource

• Classification: CELL CYCLE
• Organism(s): Saccharomyces cerevisiae S288C
• Expression System: Saccharomyces cerevisiae
• Mutation(s): No 


• Deposited: 2022-02-19 Released: 2023-03-08 
• Deposition Author(s): Zhang, Q., Zhang, Q.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 4.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structures of Mec1/ATR kinase endogenously stimulated by different genotoxins.

Zhang, Q., Wang, P., Wu, T., Zhang, Y., Zheng, Z., Zhou, S., Qian, D., Wang, X., Cai, G.

(2022) Cell Discov 8: 98-98

• PubMed: 36175395 
• DOI: https://doi.org/10.1038/s41421-022-00461-8
• Primary Citation Related Structures: 
  7WZR, 7WZW

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Organizational Affiliation: 
• The First Affiliated Hospital of USTC, MOE Key Laboratory for Cellular Dynamics, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Hefei, Anhui, China.
Department of Radiation Oncology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
The First Affiliated Hospital of USTC, MOE Key Laboratory for Cellular Dynamics, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China. [e-mail].
The First Affiliated Hospital of USTC, MOE Key Laboratory for Cellular Dynamics, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China. [e-mail].
Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Hefei, Anhui, China. [e-mail].

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 720.43 kDa 
• Atom Count: 27,037 
• Modeled Residue Count: 5,440 
• Deposited Residue Count: 6,230 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein kinase MEC1	A [auth C], C [auth F]	2,368	Saccharomyces cerevisiae S288C	Mutation(s): 0  Gene Names: MEC1 EC: 2.7.11.1
UniProt
Find proteins for P38111 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P38111  Go to UniProtKB:  P38111

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA damage checkpoint protein LCD1	B [auth E], D	747	Saccharomyces cerevisiae S288C	Mutation(s): 0  Gene Names: LCD1
UniProt
Find proteins for Q04377 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore Q04377  Go to UniProtKB:  Q04377

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 4.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2023-03-08 
Deposition Author(s): Zhang, Q., Zhang, Q.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2023-03-08
  Type: Initial release
  
• Version 1.1: 2024-06-26
  Changes: Data collection
• Version 1.2: 2025-07-02
  Changes: Data collection, Structure summary