7L9P

Structure of human SHLD2-SHLD3-REV7-TRIP13(E253Q) complex

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history. 


Literature

Molecular mechanisms of assembly and TRIP13-mediated remodeling of the human Shieldin complex.

Xie, W., Wang, S., Wang, J., de la Cruz, M.J., Xu, G., Scaltriti, M., Patel, D.J.

(2021) Proc Natl Acad Sci U S A 118

  • DOI: 10.1073/pnas.2024512118
  • Primary Citation of Related Structures:  
    7L9P, 6WWA, 6WW9

  • PubMed Abstract: 

    • The Shieldin complex, composed of REV7, SHLD1, SHLD2, and SHLD3, protects DNA double-strand breaks (DSBs) to promote nonhomologous end joining. The AAA + ATPase TRIP13 remodels Shieldin to regulate DNA repair pathway choice. Here we report crystal structures of human SHLD3-REV7 binary and fused SHLD2-SHLD3-REV7 ternary complexes, revealing that assembly of Shieldin requires fused SHLD2-SHLD3 induced conformational heterodimerization of open (O-REV7) and closed (C-REV7) forms of REV7 ...

    The Shieldin complex, composed of REV7, SHLD1, SHLD2, and SHLD3, protects DNA double-strand breaks (DSBs) to promote nonhomologous end joining. The AAA + ATPase TRIP13 remodels Shieldin to regulate DNA repair pathway choice. Here we report crystal structures of human SHLD3-REV7 binary and fused SHLD2-SHLD3-REV7 ternary complexes, revealing that assembly of Shieldin requires fused SHLD2-SHLD3 induced conformational heterodimerization of open (O-REV7) and closed (C-REV7) forms of REV7. We also report the cryogenic electron microscopy (cryo-EM) structures of the ATPĪ³S-bound fused SHLD2-SHLD3-REV7-TRIP13 complexes, uncovering the principles underlying the TRIP13-mediated disassembly mechanism of the Shieldin complex. We demonstrate that the N terminus of REV7 inserts into the central channel of TRIP13, setting the stage for pulling the unfolded N-terminal peptide of C-REV7 through the central TRIP13 hexameric channel. The primary interface involves contacts between the safety-belt segment of C-REV7 and a conserved and negatively charged loop of TRIP13. This process is mediated by ATP hydrolysis-triggered rotatory motions of the TRIP13 ATPase, thereby resulting in the disassembly of the Shieldin complex.

    Organizational Affiliation: 

    Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065; xiew@mskcc.org pateld@mskcc.org.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Pachytene checkpoint protein 2 homolog A, B, C, D, E, F432Homo sapiensMutation(s): 1 
Gene Names: TRIP13, PCH2
Find proteins for Q15645 (Homo sapiens)
Explore Q15645 
Go to UniProtKB:  Q15645
NIH Common Fund Data Resources
PHAROS:  Q15645
GTEx:  ENSG00000071539
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Mitotic spindle assembly checkpoint protein MAD2B G, I, J, K211Homo sapiensMutation(s): 0 
Gene Names: MAD2L2, MAD2B, REV7
Find proteins for Q9UI95 (Homo sapiens)
Explore Q9UI95 
Go to UniProtKB:  Q9UI95
NIH Common Fund Data Resources
PHAROS:  Q9UI95
GTEx:  ENSG00000116670
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Shieldin complex subunit 2, Shieldin complex subunit 3 chimera X, Y99Homo sapiensMutation(s): 0 
Gene Names: SHLD2, FAM35A, RINN2, SHLD3, FLJ26957, RINN1
Find proteins for Q86V20 (Homo sapiens)
Explore Q86V20 
Go to UniProtKB:  Q86V20
NIH Common Fund Data Resources
PHAROS:  Q86V20
GTEx:  ENSG00000122376
Find proteins for Q6ZNX1 (Homo sapiens)
Explore Q6ZNX1 
Go to UniProtKB:  Q6ZNX1
NIH Common Fund Data Resources
PHAROS:  Q6ZNX1
GTEx:  ENSG00000253251
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AGS
Query on AGS
Download Ideal Coordinates CCD File 
A, B, C, D, E
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
C10 H16 N5 O12 P3 S
NLTUCYMLOPLUHL-KQYNXXCUSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2021-01-04 
  • Released Date: 2021-03-03 
    • Deposition Author(s): Xie, W., Patel, D.J.

Revision History  (Full details and data files)

  • Version 1.0: 2021-03-03
    Type: Initial release