The scaffold RhoGAP protein ARHGAP8/BPGAP1 synchronizes Rac and Rho signaling to facilitate cell migration

Author:

Wong Darren Chen Pei1,Pan Catherine Qiurong1,Er Shi Yin2,Thivakar T.1,Rachel Tan Zi Yi1,Seah Sock Hong1,Chua Pei Jou3,Jiang Tingting2,Chew Ti Weng1,Chaudhuri Parthiv Kant1,Mukherjee Somsubhro1,Salim Agus4,Aye Thike Aye5,Koh Cheng Gee6,Lim Chwee Teck17,Tan Puay Hoon5,Bay Boon Huat3,Ridley Anne J.8,Low Boon Chuan129

Affiliation:

1. Mechanobiology Institute, National University of Singapore, Singapore 117411

2. Cell Signaling and Developmental Biology Laboratory, Department of Biological Sciences, National University of Singapore, Singapore 117558

3. Department of Anatomy, Yong Loo Lin School of Medicine, National University Health System, Singapore 117594

4. Melbourne School of Population and Global Health and School of Mathematics and Statistics, The University of Melbourne, Melbourne, Victoria 3052, Australia

5. Department of Pathology, Singapore General Hospital, Singapore 169856

6. Division of Molecular Genetics & Cell Biology, School of Biological Sciences, Nanyang Technological University, Singapore 637551

7. Department of Biomedical Engineering, National University of Singapore, Singapore 117583

8. School of Cellular and Molecular Medicine, University of Bristol, Bristol BS8 1TD, United Kingdom

9. NUS College, National University of Singapore, Singapore 138593

Abstract

How the activities of Rho and Rac are coordinated through their GEF and GAP remains unclear. The prometastatic RhoGAP, BPGAP1, recruits the RacGEF Vav1 to activate Rac1 while it down-regulates the local RhoA activity that in turns influences Rac1 activation by Vav1. BPGAP1 acts as a scaffold to synchronize Rho and Rac signaling in cell motility.

Publisher

American Society for Cell Biology (ASCB)

Subject

Cell Biology,Molecular Biology

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