6CKO image
Entry Detail
PDB ID:
6CKO
Keywords:
DNA BINDING PROTEIN/TRANSFERASE
Title:
Crystal structure of an AF10 fragment
Biological Source:
Source Organism:
Homo sapiens, Danio rerio
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
2018-02-28
Release Date:
2018-03-21
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.00 Å
R-Value Free:
0.23
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
C 2 2 21
6CKO validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Protein AF-10
Chain IDs:A, B
Chain Length:77
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P55197
Protein Blast
Polymer Type:polypeptide(L)
Description:Histone-lysine N-methyltransferase, H3 lysine-79 specific
Chain IDs:C, D
Chain Length:50
Number of Molecules:2
Biological Source:Danio rerio
UniProt ID:F1Q4W7
Ligand Molecules
UNX
ZN
Primary Citation
Structural and functional analysis of the DOT1L-AF10 complex reveals mechanistic insights into MLL-AF10-associated leukemogenesis.
Genes Dev. 32 341 346 (2018)
PMID: 29563185 DOI: 10.1101/gad.311639.118

Abstact

The mixed-lineage leukemia (MLL)-AF10 fusion oncoprotein recruits DOT1L to the homeobox A (HOXA) gene cluster through its octapeptide motif leucine zipper (OM-LZ), thereby inducing and maintaining the MLL-AF10-associated leukemogenesis. However, the recognition mechanism between DOT1L and MLL-AF10 is unclear. Here, we present the crystal structures of both apo AF10OM-LZ and its complex with the coiled-coil domain of DOT1L. Disruption of the DOT1L-AF10 interface abrogates MLL-AF10-associated leukemic transformation. We further show that zinc stabilizes the DOT1L-AF10 complex and may be involved in the regulation of the HOXA gene expression. Our studies may also pave the way for the rational design of therapeutic drugs against MLL-rearranged leukemia.

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Primary Citation of related structures
6CKO