期刊
CHEMISTRY & BIOLOGY
卷 18, 期 10, 页码 1300-1311出版社
CELL PRESS
DOI: 10.1016/j.chembiol.2011.07.020
关键词
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资金
- National Institutes of Health [CA083048, CA112369]
- Biotechnology and Biological Sciences Research Council [BB/F004699/1]
- Leukemia and Lymphoma Society
- American Cancer Society
- Biotechnology and Biological Sciences Research Council [BB/F004699/1] Funding Source: researchfish
- BBSRC [BB/F004699/1] Funding Source: UKRI
Identification of methionine aminopeptidase-2 (MetAP-2) as the molecular target of the antiangiogenic compound TNP-470 has sparked interest in N-terminal Met excision's (NME) role in endothelial cell biology. In this regard, we recently demonstrated that MetAP-2 inhibition suppresses Wnt planar cell polarity (PCP) signaling and that endothelial cells depend on this pathway for normal function. Despite this advance, the substrate(s) whose activity is altered upon MetAP-2 inhibition, resulting in loss of Wnt PCP signaling, is not known. Here we identify the small G protein Rab37 as a MetAP-2-specific substrate that accumulates in the presence of TNP-470. A functional role for aberrant Rab37 accumulation in TNP-470's mode of action is demonstrated using a Rab37 point mutant that is resistant to NME, because expression of this mutant phenocopies the effects of MetAP-2 inhibition on Wnt PCP signaling-dependent processes.
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