Protein Information

Name GTPase
Synonyms RAC3; RAC3; Ras related C3 botulinum substrate 3; Ras related C3 botulinum toxin substrate 3; p21 Rac3; Ras related C3 botulinum substrate 3s; Ras related C3 botulinum toxin substrate 3s; p21 Rac3s…

Compound Information

Name sodium fluoride
CAS sodium fluoride (NaF)

Reference List

PubMed Abstract RScore(About this table)
10494860 Vincent S, Settleman J: Inhibition of RhoGAP activity is sufficient for the induction of Rho-mediated actin reorganization. Eur J Cell Biol. 1999 Aug;78(8):539-48.

We observed that exposure of cultured fibroblasts to sodium fluoride (NaF) results in a rapid and potent stimulation of actin stress fiber formation.
This effect is mediated by the Rho GTPase and is associated with the inactivation of cellular RhoGAP activity.
3(0,0,0,3) Details
9482864 Vincent S, Brouns M, Hart MJ, Settleman J: Evidence for distinct mechanisms of transition state stabilization of GTPases by fluoride. Proc Natl Acad Sci U S A. 1998 Mar 3;95(5):2210-5.


GTPase-activating proteins (GAPs) function by stabilizing the GTPase transition state.
2(0,0,0,2) Details
9016786 Chen HK, Yeh NH: The nucleolar phosphoprotein P130 is a GTPase/ATPase with intrinsic property to form large complexes triggered by F- and Mg2+. Biochem Biophys Res Commun. 1997 Jan 13;230(2):370-5.

2(0,0,0,2) Details
8706742 Wolfl J, Dagher MC, Fuchs A, Geiszt M, Ligeti E: In vitro activation of the NADPH oxidase by fluoride. Eur J Biochem. 1996 Jul 15;239(2):369-75.


In contrast, fluoride effectively inhibits Rac-GTPase activity enhanced by a membrane component.
1(0,0,0,1) Details
9231714 Blanc EM, Kelly JF, Mark RJ, Waeg G, Mattson MP: 4-Hydroxynonenal, an aldehydic product of lipid peroxidation, impairs signal transduction associated with muscarinic acetylcholine and metabotropic glutamate receptors: possible action on G alpha (q/11). J Neurochem. 1997 Aug;69(2):570-80.


At subtoxic concentrations, HNE markedly inhibited GTPase activity, inositol phosphate release, and elevation of intracellular calcium levels induced by carbachol (muscarinic agonist) and (RS)-3,5-dihydroxyphenyl glycine (metabotropic glutamate receptor agonist).
1(0,0,0,1) Details
10805281 Fuse I, Higuchi W, Aizawa Y: Pathogenesis of a bleeding disorder characterized by platelet unresponsiveness to thromboxane A2. Semin Thromb Hemost. 2000;26(1):43-5.


The platelets of three patients had the ability to bind exogenous TXA2, but synthetic TXA2 mimetic-induced postreceptor biochemical events, such as IP3 formation, Ca2+ mobilization, phosphatidic acid formation, and GTPase activities, were selectively defective, suggesting impaired coupling between the TXA2 receptor and phospholipase C activation.
1(0,0,0,1) Details
9753466 Natochin M, Artemyev NO: A single mutation Asp229 --> Ser confers upon Gs alpha the ability to interact with regulators of G protein signaling. Biochemistry. 1998 Sep 29;37(39):13776-80.


In a single-turnover assay, RGS16 maximally stimulated GTPase activity of Gs alpha Asp229Ser by approximately 5-fold with an EC50 value of 7.5 microM.
1(0,0,0,1) Details
10555980 Graham DL, Eccleston JF, Chung CW, Lowe PN: Magnesium fluoride-dependent binding of small G proteins to their GTPase-activating proteins. Biochemistry. 1999 Nov 9;38(45):14981-7.


GTPase-activating proteins (GAPs) enhance the intrinsic GTPase activity of small G proteins, such as Ras and Rho, by contributing a catalytic arginine to the active site.
1(0,0,0,1) Details
8816753 Poon PP, Wang X, Rotman M, Huber I, Cukierman E, Cassel D, Singer RA, Johnston GC: Saccharomyces cerevisiae Gcs1 is an ADP-ribosylation factor GTPase-activating protein. Proc Natl Acad Sci U S A. 1996 Sep 17;93(19):10074-7.


The GTPase cycle of ARF proteins that allows the uncoating and fusion of a transport vesicle with a target membrane is mediated by ARF-dependent GTPase-activating proteins (GAPs).
1(0,0,0,1) Details
8972723 Di Stefano A, La Gaetana R, Bovalini L, Lusini P, Martelli P: Pertussis toxin reverses the inhibition of the adenylyl cyclase system by khellin in HeLa cells. Biochim Biophys Acta. 1996 Nov 8;1314(1-2):105-8.


This paper reports that pretreatment of HeLa cells with pertussis toxin reverses both the inhibition of NaF-stimulated adenylyl cyclase activity and the stimulation of GTPase by khellin alone and plus UVA light, as previously reported.
1(0,0,0,1) Details
10515580 Szaszi K, Korda A, Wolfl J, Paclet MH, Morel F, Ligeti E: Possible role of RAC-GTPase-activating protein in the termination of superoxide production in phagocytic cells. Free Radic Biol Med. 1999 Oct;27(7-8):764-72.


Activation of the enzyme was carried out under in vitro conditions and a shift from the active to the inactive form of the GTP-binding protein was attained (i) by addition of an excess of GDP to the assembled enzyme complex or (ii) by variation of the Rac-GTPase activating (Rac-GAP) capacity of the constituents of the cell-free system.
1(0,0,0,1) Details