Targeting protein multiple conformations: a structure-based strategy for kinase drug design

Area of Science:

• Biochemistry
• Medicinal Chemistry
• Pharmacology

Background:

• Protein kinases are crucial drug targets, but resistance limits efficacy.
• Kinases exist in multiple conformations, influencing inhibitor binding.
• Small-molecule inhibitors targeting specific conformations are emerging.

Purpose of the Study:

• To analyze and classify kinase binding pockets across different conformational states.
• To provide a structure-based rationale for designing inhibitors against multiple kinase conformations.
• To exemplify the strategy of targeting kinase conformations with existing drugs.

Main Methods:

• Structure-based analysis of kinase catalytic clefts.
• Classification of binding pockets in various conformational states.
• Review of clinically relevant small-molecule kinase inhibitors.

Main Results:

• Identified and classified distinct binding pockets in different kinase conformations.
• Demonstrated how targeting these pockets can lead to unique inhibitor profiles.
• Provided examples of successful drugs utilizing this strategy.

Conclusions:

• Targeting multiple protein kinase conformations is a viable strategy for drug design.
• This approach offers a rationale for developing inhibitors that circumvent drug resistance mutations.
• Structure-based analysis is key to advancing antikinase therapy.