6GVJ image
Entry Detail
PDB ID:
6GVJ
Keywords:
Title:
Human Mps1 kinase domain with ordered activation loop
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2018-06-21
Release Date:
2019-01-09
Method Details:
Experimental Method:
Resolution:
2.41 Å
R-Value Free:
0.23
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
I 2 2 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Dual specificity protein kinase TTK
Chain IDs:A
Chain Length:429
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
A crystal structure of the human protein kinase Mps1 reveals an ordered conformation of the activation loop.
Proteins 87 348 352 (2019)
PMID: 30582207 DOI: 10.1002/prot.25651

Abstact

Monopolar spindle 1 (Mps1) is a dual-specificity protein kinase, orchestrating faithful chromosome segregation during mitosis. All reported structures of the Mps1 kinase adopt the hallmarks of an inactive conformation, which includes a mostly disordered activation loop. Here, we present a 2.4 Å resolution crystal structure of an "extended" version of the Mps1 kinase domain, which shows an ordered activation loop. However, the other structural characteristics of an active kinase are not present. Our structure shows that the Mps1 activation loop can fit to the ATP binding pocket and interferes with ATP, but less so with inhibitors binding, partly explain the potency of various Mps1 inhibitors.

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Primary Citation of related structures