SRGAP2 stimulates RAC1 GTP-ase activity and ends FMNL1-mediated elongation of actin filaments

Stable Identifier
R-HSA-5665809
Type
Reaction [transition]
Species
Homo sapiens
Compartment
cytosol, plasma membrane
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SRGAP2 stimulates RAC1 GTP-ase activity and ends FMNL1-mediated elongation of actin filaments
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SRGAP2 is a GTPase activating protein that stimulates the GTPase activity of RAC1 bound to FMNL1. GTP hydrolysis produces inactive GDP-bound RAC1 which is unable to bind and activate FMNL1. SRGAP2 thereby limits the duration of FMNL1-mediated elongation of actin filaments downstream of RAC1:GTP (Mason et al. 2011).

Literature References
PubMed ID Title Journal Year
21148482 Bi-modal regulation of a formin by srGAP2

Mason, FM, Heimsath, EG, Higgs, HN, Soderling, SH

J. Biol. Chem. 2011
Participants
Input
Output
Participant Of
hasEvent
Catalyst Activity
Catalyst Activity
Title
GTPase activity of SRGAP2:RAC1:GTP:FMNL1:Profilin:G-actin [plasma membrane]
Physical Entity
SRGAP2:RAC1:GTP:FMNL1:Profilin:G-actin [plasma membrane]
Activity
GTPase activity (0003924)
Orthologous Events
SRGAP2 stimulates RAC1 GTP-ase activity and ends FMNL1-mediated elongation of actin filaments (Bos taurus)
SRGAP2 stimulates RAC1 GTP-ase activity and ends FMNL1-mediated elongation of actin filaments (Danio rerio)
SRGAP2 stimulates RAC1 GTP-ase activity and ends FMNL1-mediated elongation of actin filaments (Gallus gallus)
SRGAP2 stimulates RAC1 GTP-ase activity and ends FMNL1-mediated elongation of actin filaments (Mus musculus)
SRGAP2 stimulates RAC1 GTP-ase activity and ends FMNL1-mediated elongation of actin filaments (Rattus norvegicus)
SRGAP2 stimulates RAC1 GTP-ase activity and ends FMNL1-mediated elongation of actin filaments (Sus scrofa)
SRGAP2 stimulates RAC1 GTP-ase activity and ends FMNL1-mediated elongation of actin filaments (Xenopus tropicalis)
Authored
Orlic-Milacic, M  (2014-10-24)
Rivero Crespo, F  (2014-12-26)
Created
Orlic-Milacic, M  (2015-01-20)