Cell Reports volume 5, issue 2, P493-507 2013 DOI: 10.1016/j.celrep.2013.09.015 View full text
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Joseph A. Wawrzyniak, Anna Bianchi-Smiraglia, Wiam Bshara, Sudha Mannava, Jeff Ackroyd, Archis Bagati, Angela R. Omilian, Michael Im, Natalia Fedtsova, Jeffrey C. Miecznikowski, Kalyana C. Moparthy, Shoshanna N. Zucker, Qianqian Zhu, Nadezhda I. Kozlova et al.

Abstract: SUMMARY Melanoma is one of the most aggressive types of human cancers, and the mechanisms underlying melanoma invasive phenotype are not completely understood. Here, we report that expression of guanosine monophosphate reductase (GMPR), an enzyme involved in de novo biosynthesis of purine nucleotides, was down-regulated in invasive stages of human melanoma. Loss- and gain-of-function experiments revealed that GMPR down-regulates the amounts of several GTP-bound (active) RHO-GTPases, suppresses the ability of …

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