3M9Q image
Deposition Date 2010-03-22
Release Date 2010-07-21
Last Version Date 2023-09-06
Entry Detail
PDB ID:
3M9Q
Keywords:
DNA BINDING PROTEIN
Title:
Drosophila MSL3 chromodomain
Biological Source:
Source Organism:
Drosophila melanogaster (Taxon ID: 7227)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.29 Å
R-Value Free:
0.19
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
P 32 2 1
3M9Q validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Protein male-specific lethal-3
Gene (Uniprot):msl-3
Mutations:C66A
Chain IDs:A, B
Chain Length:101
Number of Molecules:2
Biological Source:Drosophila melanogaster
UniProt ID:P50536 Pfam ID:PF22732
Primary Citation
Corecognition of DNA and a methylated histone tail by the MSL3 chromodomain.
Nat.Struct.Mol.Biol. 17 1027 1029 (2010)
PMID: 20657587 DOI: 10.1038/nsmb.1856

Abstact

MSL3 resides in the MSL (male-specific lethal) complex, which upregulates transcription by spreading the histone H4 Lys16 (H4K16) acetyl mark. We discovered a DNA-dependent interaction of MSL3 chromodomain with the H4K20 monomethyl mark. The structure of a ternary complex shows that the DNA minor groove accommodates the histone H4 tail, and monomethyllysine inserts in a four-residue aromatic cage in MSL3. H4K16 acetylation antagonizes MSL3 binding, suggesting that MSL function is regulated by a combination of post-translational modifications.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
3M9P