8D6D image
Entry Detail
PDB ID:
8D6D
Title:
Crystal Structure of Human Myt1 Kinase domain Bounded with compound 39
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2022-06-06
Release Date:
2022-07-27
Method Details:
Experimental Method:
Resolution:
2.35 Å
R-Value Free:
0.27
R-Value Work:
0.24
R-Value Observed:
0.24
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Membrane-associated tyrosine- and threonine-specific cdc2-inhibitory kinase
Chain IDs:A, B
Chain Length:311
Number of Molecules:2
Biological Source:Homo sapiens
Primary Citation

Abstact

PKMYT1 is a regulator of CDK1 phosphorylation and is a compelling therapeutic target for the treatment of certain types of DNA damage response cancers due to its established synthetic lethal relationship with CCNE1 amplification. To date, no selective inhibitors have been reported for this kinase that would allow for investigation of the pharmacological role of PKMYT1. To address this need compound 1 was identified as a weak PKMYT1 inhibitor. Introduction of a dimethylphenol increased potency on PKMYT1. These dimethylphenol analogs were found to exist as atropisomers that could be separated and profiled as single enantiomers. Structure-based drug design enabled optimization of cell-based potency. Parallel optimization of ADME properties led to the identification of potent and selective inhibitors of PKMYT1. RP-6306 inhibits CCNE1-amplified tumor cell growth in several preclinical xenograft models. The first-in-class clinical candidate RP-6306 is currently being evaluated in Phase 1 clinical trials for treatment of various solid tumors.

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