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Updated: Jul 15, 2025

Mimicking the Function of Signaling Proteins: Toward Artificial Signal Transduction Therapy
Published on: September 29, 2016
Structural Insight into Geranylgeranyl Diphosphate Synthase (GGDPS) for Cancer Therapy
Andrew C Pham1, Sarah A Holstein2, Gloria E O Borgstahl1,3
1Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska.
Abstract:
Geranylgeranyl diphosphate synthase (GGDPS), the source of the isoprenoid donor in protein geranylgeranylation reactions, has become an attractive target for anticancer therapy due to the reliance of cancers on geranylgeranylated proteins. Current GGDPS inhibitor development focuses on optimizing the drug-target enzyme interactions of nitrogen-containing bisphosphonate-based drugs. To advance GGDPS inhibitor development, understanding the enzyme structure, active site, and ligand/product interactions is essential. Here we provide a comprehensive structure-focused review of GGDPS. We reviewed available yeast and human GGDPS structures and then used AlphaFold modeling to complete unsolved structural aspects of these models. We delineate the elements of higher-order structure formation, product-substrate binding, the electrostatic surface, and small-molecule inhibitor binding. With the rise of structure-based drug design, the information provided here will serve as a valuable tool for rationally optimizing inhibitor selectivity and effectiveness.
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