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Updated: Aug 14, 2026

A Guide to Production, Crystallization, and Structure Determination of Human IKK1/α
Published on: November 2, 2018
AKT crystal structure and AKT-specific inhibitors
Chandra C Kumar1, Vincent Madison
1Department of Tumor Biology, Schering-Plough Research Institute, Kenilworth, NJ 07033, USA. chandra.kumar@spcorp.com
Abstract:
AKT kinases are attractive targets for small molecule drug discovery because of their key role in tumor cell survival/proliferation and their overexpression/activation in many human cancers. This review summarizes studies that support the rationale for targeting AKT kinases in new drug discovery efforts. Structural features of AKT kinase in its inactive and active states, as determined by crystal structure analysis, are described. Recent efforts in the development and biological evaluation of small molecule inhibitors of AKT, and the challenges remaining are summarized. Inhibitors targeting the ATP binding site, PH domain and protein substrate binding site, as well as isoform selective allosteric inhibitors are reviewed. Structure-based design using PKA mutants as surrogates and computer modeling in the discovery of selective inhibitors is discussed. The issues and challenges facing the development of different classes of inhibitors as therapeutics are also discussed.
Insights
Targeting AKT kinases, crucial for cancer cell survival, is a promising strategy for new drug discovery. This review details AKT inhibitors, structural insights, and challenges in developing effective cancer therapeutics.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- AKT kinases play a critical role in tumor cell survival and proliferation.
- Overexpression and activation of AKT kinases are observed in numerous human cancers, making them attractive therapeutic targets.
Purpose of the Study:
- To review the rationale and recent progress in targeting AKT kinases for drug discovery.
- To summarize structural features, inhibitor development, and challenges in creating AKT-targeted therapeutics.
Main Methods:
- Analysis of crystal structures of AKT kinase in inactive and active states.
- Review of small molecule inhibitors targeting the ATP binding site, PH domain, and protein substrate binding site.
- Discussion of structure-based design, computer modeling, and allosteric inhibitor development.
Main Results:
- Various small molecule inhibitors targeting different sites of AKT kinase have been developed.
- Structural studies provide insights into AKT kinase's inactive and active conformations, aiding inhibitor design.
- Development of isoform-selective allosteric inhibitors shows promise.
Conclusions:
- Targeting AKT kinases remains a key strategy in cancer drug discovery.
- Challenges in developing selective and effective AKT inhibitors persist, requiring further research.
- Continued exploration of diverse inhibitor classes and design strategies is essential for therapeutic advancement.
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