3WYY

CRYSTAL STRUCTURE OF HUMAN MPS1 CATALYTIC DOMAIN IN COMPLEX WITH (E)-3-(4-((6-(((3s,5s,7s)-adamantan-1-yl)amino)-4-amino-5-cyanopyridin-2-yl)amino)-2-(cyanomethoxy)phenyl)-N-(2-methoxyethyl)acrylamide

Summary for 3WYY

• Entry DOI: 10.2210/pdb3wyy/pdb
• Related: 3WYX
• Descriptor: Dual specificity protein kinase TTK, (2E)-3-[4-({4-amino-5-cyano-6-[(3s,5s,7s)-tricyclo[3.3.1.1~3,7~]dec-1-ylamino]pyridin-2-yl}amino)-2-(cyanomethoxy)phenyl]-N-(2-methoxyethyl)prop-2-enamide (2 entities in total)
• Functional Keywords: kinase, serine/threonine-protein kinase, transferase, inhibitor complex, atp binding
• Biological source: Homo sapiens (human)
• Total number of polymer chains: 1
• Total formula weight: 37400.01

Authors

Kusakabe, K.,Ide, N.,Daigo, Y.,Itoh, T.,Yamamoto, T.,Kojima, E.,Mitsuoka, Y.,Tadano, G.,Tagashira, S.,Higashino, K.,Okano, Y.,Sato, Y.,Inoue, M.,Iguchi, M.,Kanazawa, T.,Ishioka, Y.,Dohi, K.,Kido, Y.,Sakamoto, S.,Ando, S.,Maeda, M.,Higaki, M.,Yoshizawa, H.,Murai, H.,Nakamura, Y. (deposition date: 2014-09-10, release date: 2015-04-08, Last modification date: 2024-05-29)

Primary citation

Kusakabe, K.,Ide, N.,Daigo, Y.,Itoh, T.,Yamamoto, T.,Kojima, E.,Mitsuoka, Y.,Tadano, G.,Tagashira, S.,Higashino, K.,Okano, Y.,Sato, Y.,Inoue, M.,Iguchi, M.,Kanazawa, T.,Ishioka, Y.,Dohi, K.,Kido, Y.,Sakamoto, S.,Ando, S.,Maeda, M.,Higaki, M.,Yoshizawa, H.,Murai, H.,Nakamura, Y.
A unique hinge binder of extremely selective aminopyridine-based Mps1 (TTK) kinase inhibitors with cellular activity.
Bioorg.Med.Chem., 23:2247-2260, 2015

PubMed Abstract: Mps1, also known as TTK, is a dual-specificity kinase that regulates the spindle assembly check point. Increased expression levels of Mps1 are observed in cancer cells, and the expression levels correlate well with tumor grade. Such evidence points to selective inhibition of Mps1 as an attractive strategy for cancer therapeutics. Starting from an aminopyridine-based lead 3a that binds to a flipped-peptide conformation at the hinge region in Mps1, elaboration of the aminopyridine scaffold at the 2- and 6-positions led to the discovery of 19c that exhibited no significant inhibition for 287 kinases as well as improved cellular Mps1 and antiproliferative activities in A549 lung carcinoma cells (cellular Mps1 IC₅₀=5.3 nM, A549 IC₅₀=26 nM). A clear correlation between cellular Mps1 and antiproliferative IC₅₀ values indicated that the antiproliferative activity observed in A549 cells would be responsible for the cellular inhibition of Mps1. The X-ray structure of 19c in complex with Mps1 revealed that this compound retains the ability to bind to the peptide flip conformation. Finally, comparative analysis of the X-ray structures of 19c, a deamino analogue 33, and a known Mps1 inhibitor bound to Mps1 provided insights into the unique binding mode at the hinge region.

PubMed: 25801152
DOI: 10.1016/j.bmc.2015.02.042

Experimental method

X-RAY DIFFRACTION (3.05 Å)