6OQM | pdb_00006oqm

crystal structure of the MSH6 PWWP domain

• PDB DOI: https://doi.org/10.2210/pdb6OQM/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2019-04-26 Released: 2019-05-29 
• Deposition Author(s): Qin, S., Tempel, W., Bountra, C., Arrowsmith, C.H., Edwards, A.M., Min, J., Structural Genomics Consortium (SGC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 
  0.270 (Depositor), 0.277 (DCC) 
• R-Value Work: 
  0.217 (Depositor), 0.237 (DCC) 
• R-Value Observed: 
  0.222 (Depositor) 

Starting Model: experimental

Literature

crystal structure of the MSH6 PWWP domain

Qin, S., Tempel, W., Bountra, C., Arrowsmith, C.H., Edwards, A.M., Min, J., Structural Genomics Consortium (SGC)

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 15.55 kDa 
• Atom Count: 805 
• Modeled Residue Count: 100 
• Deposited Residue Count: 130 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA mismatch repair protein Msh6	A	130	Homo sapiens	Mutation(s): 0  Gene Names: MSH6, GTBP
UniProt & NIH Common Fund Data Resources
Find proteins for P52701 (Homo sapiens) Explore P52701  Go to UniProtKB:  P52701
PHAROS:  P52701 GTEx:  ENSG00000116062

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	D [auth A], E [auth A], F [auth A], G [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N
UNX	B [auth A], H [auth A], I [auth A], J [auth A]	UNKNOWN ATOM OR ION X

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free:  0.270 (Depositor), 0.277 (DCC) 
• R-Value Work:  0.217 (Depositor), 0.237 (DCC) 
• R-Value Observed: 0.222 (Depositor) 

Diffraction Data: https://doi.org/10.18430/m36oqm

Space Group: H 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 56.421	α = 90
b = 56.421	β = 90
c = 176.291	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
PDB_EXTRACT	data extraction
MR-Rosetta	phasing
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2019-05-29 
Deposition Author(s): Qin, S., Tempel, W., Bountra, C., Arrowsmith, C.H., Edwards, A.M., Min, J., Structural Genomics Consortium (SGC)

Revision History  

• Version 1.0: 2019-05-29
  Type: Initial release
  
• Version 1.1: 2023-10-11
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.2: 2025-10-22
  Changes: Database references, Derived calculations, Structure summary