1Q3L

Chromodomain Of HP1 Complexed With Histone H3 Tail Containing monomethyllysine 9.

• PDB DOI: https://doi.org/10.2210/pdb1Q3L/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Drosophila melanogaster, Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2003-07-30 Released: 2004-10-12 
• Deposition Author(s): Jacobs, S.A., Khorasanizadeh, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Free: 
  0.241 (Depositor), 0.240 (DCC) 
• R-Value Work: 
  0.222 (Depositor), 0.240 (DCC) 
• R-Value Observed: 
  0.223 (Depositor) 

Starting Model: experimental

Literature

Chromodomain Of HP1 Complexed With Histone H3 Tail Containing monomethyllysine 9

Jacobs, S.A., Khorasanizadeh, S.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 10.33 kDa 
• Atom Count: 593 
• Modelled Residue Count: 58 
• Deposited Residue Count: 85 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Heterochromatin protein 1	A	69	Drosophila melanogaster	Mutation(s): 0  Gene Names: SU(VAR)205 OR HP1 OR CG8409
UniProt
Find proteins for P05205 (Drosophila melanogaster) Explore P05205  Go to UniProtKB:  P05205

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H3	B [auth P]	16	N/A	Mutation(s): 1
UniProt & NIH Common Fund Data Resources
Find proteins for P68431 (Homo sapiens) Explore P68431  Go to UniProtKB:  P68431
PHAROS:  P68431 GTEx:  ENSG00000197409 ENSG00000197153 ENSG00000278828 ENSG00000275714 ENSG00000273983 ENSG00000274750 ENSG00000275379 ENSG00000277775

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MLZ	B [auth P]	L-PEPTIDE LINKING	C7 H16 N2 O2		LYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.64 Å
• R-Value Free:  0.241 (Depositor), 0.240 (DCC) 
• R-Value Work:  0.222 (Depositor), 0.240 (DCC) 
• R-Value Observed: 0.223 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 33.809	α = 90
b = 76.828	β = 90
c = 75.625	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-10-12 
Deposition Author(s): Jacobs, S.A., Khorasanizadeh, S.

Revision History  

• Version 1.0: 2004-10-12
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-08-16
  Changes: Data collection, Database references, Derived calculations, Refinement description