Ras-related protein Rap-2b

Definition:

Small GTP-binding protein which cycles between a GDP-bound inactive and a GTP-bound active form. Involved in EGFR and CHRM3 signaling pathways through stimulation of PLCE1. May play a role in cytoskeletal rearrangements and regulate cell spreading through activation of the effector TNIK. May regulate membrane vesiculation in red blood cells.

References:

[1]. Fabio Greco, et al. Rap2, but not Rap1 GTPase is expressed in human red blood cells and is involved in vesiculation. Biochim Biophys Acta. 2006 Mar;1763(3):330-5. [Content Brief]

[2]. Sandrine Evellin, et al. Stimulation of phospholipase C-epsilon by the M3 muscarinic acetylcholine receptor mediated by cyclic AMP and the GTPase Rap2B. J Biol Chem. 2002 May 10;277(19):16805-13. [Content Brief]

[3]. Matthias B Stope, et al. Rap2B-dependent stimulation of phospholipase C-epsilon by epidermal growth factor receptor mediated by c-Src phosphorylation of RasGRP3. Mol Cell Biol. 2004 Jun;24(11):4664-76. [Content Brief]

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