6K01

Crystal structure of xH2A-H2B

• PDB DOI: https://doi.org/10.2210/pdb6K01/pdb

• Classification: CHAPERONE
• Organism(s): Xenopus laevis
• Expression System: Escherichia coli K-12
• Mutation(s): Yes 


• Deposited: 2019-05-05 Released: 2019-10-09 
• Deposition Author(s): Liu, Y.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.84 Å
• R-Value Free: 0.278 
• R-Value Work: 0.223 
• R-Value Observed: 0.229 

Starting Model: experimental

Literature

Crystal structure of xlH2A-H2B

Liu, Y.R.

(2019) Structure 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 Pseudo Symmetry: Cyclic - C2  (Explore in 3D)
Pseudo Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 21.31 kDa 
• Atom Count: 1,280 
• Modelled Residue Count: 166 
• Deposited Residue Count: 191 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H2A	A [auth C]	92	Xenopus laevis	Mutation(s): 0  Gene Names: hist1h2aj
UniProt
Find proteins for Q6AZJ8 (Xenopus laevis) Explore Q6AZJ8  Go to UniProtKB:  Q6AZJ8

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H2B 1.1	B [auth D]	99	Xenopus laevis	Mutation(s): 1
UniProt
Find proteins for P02281 (Xenopus laevis) Explore P02281  Go to UniProtKB:  P02281

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.84 Å
• R-Value Free: 0.278 
• R-Value Work: 0.223 
• R-Value Observed: 0.229 
• Space Group: P 3₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.923	α = 90
b = 46.923	β = 90
c = 67.129	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data scaling
PDB_EXTRACT	data extraction
HKL-2000	data reduction
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2019-10-09 
Deposition Author(s): Liu, Y.R.

Revision History  

• Version 1.0: 2019-10-09
  Type: Initial release
  
• Version 1.1: 2023-11-22
  Changes: Data collection, Database references, Refinement description