ライフサイエンスコーパス: Gbeta

1 nide group and binding to a specific site on Gbeta.

2 nknown putative interfaces on the surface of Gbeta.

3 ed the evolution of the molecular surface of Gbeta.

4 g of the Gbetagamma dimer, via contacts with Gbeta.

5 a with Gbeta is necessary for this action of Gbeta.

6 affecting the surface expression of GIRK or Gbeta.

7 synchronized following acute inactivation of Gbeta.

8 e nucleotide-binding protein subunit beta-1, Gbeta.

9 iary complex with CCT preloaded with nascent Gbeta.

10 ich allowed us to uncover divergent roles of Gbeta(1) and Gbeta(2) in the regulation of neutrophil fu

11 However, knockdown of both Gbeta(1) and Gbeta(2) led to significant reduction in mo

12 ed successfully to silence the expression of Gbeta(1) and/or Gbeta(2) in mouse neutrophils.

13 In addition, knockdown of Gbeta(1) but not Gbeta(2) inhibited the ability of neutr

14 s rather than motility, whereas knockdown of Gbeta(1) had no significant effect.

15 onal yeast two-hybrid assays showed that the Gbeta(1) subunit also interacts with the N-terminal segm

16 the active Gbeta(2) subunit and the inactive Gbeta(1) subunit, we identified a cluster of amino acids

17 s in TRPM3 and their interacting partners in Gbeta(1) that are individually necessary for TRPM3 inhib

18 Homozygous Gnb1 (Gbeta(1)) deletion was lethal, but mice lacking Gnb2 (Gb

19 otide exchange at Galphaq in the presence of Gbeta(1)gamma(1) and NT was crucially affected by the li

20 As shown previously, Gbeta(1)gamma(1) experiences significant attractive inte

21 n of UNC119 with G(t) led to displacement of Gbeta(1)gamma(1) from the heterotrimer.

22 tion by light, the dissociated G(t)alpha and Gbeta(1)gamma(1) subunits of transducin translocate from

23 nt, and the apparent affinity of Galphaq and Gbeta(1)gamma(1) to activated NTS1 increased with increa

24 a 1) forms a heterotrimeric complex with rod Gbeta(1)gamma(1), 2) substitutes equally for rTalpha in

25 e amino-terminal region decreased binding to Gbeta(1)gamma(1).

26 Gbeta(1)gamma(2) was 47-fold less potent in activating t

27 forms a quaternary complex with Galpha(i1), Gbeta(1)gamma(2), and phospholipase C beta2.

28 Gbetagamma dimers containing Gbeta(1-4) complexed with gamma(2) stimulated P-Rex1 act

29 erent phenotypes that result from removal of Gbeta 13F from each region demonstrate a striking divisi

30 Like TTK69, Gbeta 13F is not required in all DA-forming follicle cel

31 vation was dependent on the presence of free Gbeta 1gamma 2 since its sequestration in the presence o

32 Moreover, purified Gbeta 1gamma 2 stimulated the activity of purified PLC-e

33 Coexpression of PLC-eta2 with Gbeta 1gamma 2, as well as with certain other Gbetagamma

34 Gbeta 1gamma 2-dependent increases in phosphoinositide h

35 he PH domain of PLC-eta2 is not required for Gbeta 1gamma 2-mediated regulation since a purified frag

36 he presence of Galpha i1 or GRK2-ct reversed Gbeta 1gamma 2-promoted activation.

37 g the PH domain nonetheless was activated by Gbeta 1gamma 2.

38 Knockdown of Gbeta(2) appeared to affect primarily the directionality

39 egral components of chromatin and effects of Gbeta(2) depletion on global gene expression.

40 of amino acids that functionally distinguish Gbeta(2) from other Gbeta subunits.

41 to silence the expression of Gbeta(1) and/or Gbeta(2) in mouse neutrophils.

42 s to uncover divergent roles of Gbeta(1) and Gbeta(2) in the regulation of neutrophil functions.

43 In addition, knockdown of Gbeta(1) but not Gbeta(2) inhibited the ability of neutrophils to kill in

44 Gbeta(2) interacted with a sequence motif that was prese

45 augmented Gbeta(2) levels in the nucleus and Gbeta(2) interacted with specific nucleosome core histon

46 However, knockdown of both Gbeta(1) and Gbeta(2) led to significant reduction in motility and re

47 in II type 1 receptor specifically augmented Gbeta(2) levels in the nucleus and Gbeta(2) interacted w

48 Depletion of Gbeta(2) repressed the basal and angiotensin II-dependen

49 By exchanging residues between the active Gbeta(2) subunit and the inactive Gbeta(1) subunit, we i

50 tagamma through demonstrating interaction of Gbeta(2) with integral components of chromatin and effec

51 deletion was lethal, but mice lacking Gnb2 (Gbeta(2)) were viable.

52 -mediated chemotaxis requires Galpha(i2) and Gbeta(2), but not Ca(2+) signaling, and membrane protrus

53 We detected Gbeta(2), Ggamma(2), Ggamma(3), and Ggamma(4) with activ

54 ubtype-dependent and mediated selectively by Gbeta(2)-containing dimers.

55 whose genome-wide binding accounted for the Gbeta(2)-dependent regulation of approximately 2% genes.

56 nt Gbetagamma subunits to establish that the Gbeta(2)gamma(2) dimer can selectively reconstitute the

57 nhibition of unitary currents by recombinant Gbeta(2)gamma(2) dimers but does not disrupt dimer bindi

58 se A (PKA) as a molecular switch that allows Gbeta(2)gammax dimers to effect voltage-independent inhi

59 In addition, Gbeta(3) deletion causes mislocalization and downregulat

60 Gbeta(3) deletion in mouse greatly reduces the light res

61 Furthermore, Gbeta(3) may play a role in synaptic maintenance since i

62 Here we report that Gbeta(3) participates in the G-protein heterotrimer that

63 Retinal ON bipolar cells express Gbeta(3), and they provide an excellent system to study

64 A G-protein beta subunit, Gbeta(3), plays a critical role in several physiological

65 ctivated auto alpha(2a)ARs, whereas we found Gbeta(4) and Ggamma(12) preferentially interacted with a

66 namic intramolecular interaction between the Gbeta(5) and DEP domains, which suggested that the Gbeta

67 assays reveal that R9AP co-localizes RGS11 x Gbeta(5) and Galpha(o) on the membrane and allostericall

68 forms a complex with known binding partners Gbeta(5) and R7BP.

69 e identified point mutations that weaken DEP-Gbeta(5) binding, presumably stabilizing the open state,

70 accelerating protein activity of the RGS11 x Gbeta(5) complex at Galpha(o).

71 with Gbeta(5)-RGS7 causes the DEP domain and Gbeta(5) to dissociate from each other and bind to the C

72 of mGluR6-Galpha(o) signaling by the RGS11 x Gbeta(5) x R9AP complex and establish R9AP as a general

73 which is permanently bound to Gbeta subunit Gbeta(5), and the RGS domain responsible for the interac

74 es with the atypical G protein beta subunit, Gbeta(5), and transmembrane protein R9AP.

75 ng in Xenopus oocytes indicates that RGS11 x Gbeta(5)-mediated GTPase acceleration in this system req

76 f the M3R C-tail could not bind to wild-type Gbeta(5)-RGS7 but could associate with its open mutant a

77 following model: interaction of the M3R with Gbeta(5)-RGS7 causes the DEP domain and Gbeta(5) to diss

78 5) and DEP domains, which suggested that the Gbeta(5)-RGS7 dimer could alternate between the "open" a

79 idea that the M3R can effectively induce the Gbeta(5)-RGS7 dimer to open; such a mechanism would requ

80 Inhibition of the M3R by Gbeta(5)-RGS7 is independent of the RGS domain but requi

81 that these mutations facilitated binding of Gbeta(5)-RGS7 to the recombinant third intracellular loo

82 e Gbeta(5)-RGS7; however, the open mutant of Gbeta(5)-RGS7 was able to inhibit signaling by the trunc

83 d tested their effects on the interaction of Gbeta(5)-RGS7 with the M3R.

84 the regulator of G protein signaling (RGS), Gbeta(5)-RGS7, can inhibit signal transduction via the M

85 nd that the C-terminus of M3R interacts with Gbeta(5)-RGS7.

86 e M3R insensitive to inhibition by wild-type Gbeta(5)-RGS7; however, the open mutant of Gbeta(5)-RGS7

87 with the separated recombinant DEP domain or Gbeta(5).

88 the GTPase-accelerating function of RGS11 x Gbeta(5).

89 Gbeta(5)gamma(2) was not able to stimulate P-Rex1 GEF ac

90 en translated Ggamma was added to translated Gbeta, a new band of low apparent molecular mass (approx

91 Ggamma and Gbeta acted interdependently: the effect of Ggamma requi

92 rimeric G-protein subunits Galpha (GPA1) and Gbeta (AGB1) interact in plant cells.

93 rabidopsis thaliana contains one Galpha, one Gbeta (AGB1), and at least three Ggamma subunits, allowi

94 ll wall integrity as mutants impaired in the Gbeta- (agb1-2) or Ggamma-subunits have an altered wall

95 beta, and gamma subunits, with 16 Galpha, 5 Gbeta and 12 Ggamma subunits.

96 ne canonical and three extra-large Galpha, 1 Gbeta and 3 Ggamma proteins represent the heterotrimeric

97 only possible following acute inhibition of Gbeta and are masked by slow compensation in genetic kno

98 ctivate the heterotrimeric G protein subunit Gbeta and find that this acute perturbation triggers per

99 Both Gbeta and Galpha(i).GDP binding events are required for

100 ein components, which includes two copies of Gbeta and Ggamma genes, but no canonical Galpha Instead,

101 Because the Gbeta and Ggamma proteins form obligate dimers, the phen

102 We have shown that the specific Gbeta and Ggamma proteins of a soybean (Glycine max) het

103 pecific peptides corresponding to regions on Gbeta and Ggamma shown to be important for the interacti

104 terotrimeric G-proteins comprised of Galpha, Gbeta and Ggamma subunits are important signal transduce

105 of exogenous G-proteins depends on both the Gbeta and Ggamma subunits being overexpressed in the cel

106 , we investigated the in vivo specificity of Gbeta and Ggamma subunits to auto-alpha(2a)ARs and heter

107 ntitative MRM proteomic analysis of neuronal Gbeta and Ggamma subunits, and co-immunoprecipitation of

108 ections of the dopamine receptor subtype and Gbeta and Ggamma subunits, each labeled with a different

109 pts the folding of Gbeta and the assembly of Gbeta and Ggamma subunits, events normally assisted by P

110 ein complex, consisting of canonical Galpha, Gbeta and Ggamma subunits, is involved in transducing si

111 ed an intricate chaperone system that brings Gbeta and Ggamma together.

112 Heterotrimeric G-protein (Galpha, Gbeta and Ggamma) are key signal transducers, well chara

113 insights into the multiplicity of genes for Gbeta and Ggamma, and the mechanisms underlying GPCR sig

114 As a result, the cellular levels of Gbeta and Ggamma, which depends on Gbeta for stability,

115 uorescence resonance energy transfer between Gbeta and Ggamma1 in the absence of Galpha overexpressio

116 e cytosolic chaperonin complex (CCT) to fold Gbeta and mediate its interaction with Ggamma.

117 that one such novel interface occurs between Gbeta and phospholipase C beta2 (PLC-beta2), a mammalian

118 revealed that PhLPs disrupts the folding of Gbeta and the assembly of Gbeta and Ggamma subunits, eve

119 canonical and three extra-large Galpha, one Gbeta and three Ggamma subunits exists.

120 t of Ggamma required the presence of ambient Gbeta and was enhanced by low doses of coexpressed Gbeta

121 of antibodies against the G protein subunit Gbeta and was mimicked by the myristoylated betagamma-bi

122 protein, each of which consists of a Galpha, Gbeta, and Ggamma subunit, making it difficult to deline

123 meric G-protein complexes comprising Galpha, Gbeta, and Ggamma subunits and their regulatory RGS (Reg

124 n Arabidopsis thaliana involving the Galpha, Gbeta, and Ggamma subunits of heterotrimeric G-protein c

125 Heterotrimeric G proteins comprising Galpha, Gbeta, and Ggamma subunits regulate many fundamental gro

126 or the entire G-protein complex, the Galpha, Gbeta, and Ggamma subunits, and the REGULATOR OF G-PROTE

127 rotrimeric G proteins, consisting of Galpha, Gbeta, and Ggamma subunits, are a conserved signal trans

128 rotrimeric G proteins, consisting of Galpha, Gbeta, and Ggamma subunits, play important roles in plan

129 eterotrimeric G-proteins, comprising Galpha, Gbeta, and Ggamma subunits, regulate key signaling proce

130 terotrimeric G-proteins comprised of Galpha, Gbeta, and Ggamma subunits, which influence many aspects

131 stems, the complex comprises one Galpha, one Gbeta, and one Ggamma subunit.

132 TRPM3 co-immunoprecipitated with Gbeta, and purified Gbetagamma proteins applied to excis

133 ha and Gbeta mutants, the ER localization of Gbeta, and the differential stabilities of Galpha and Gb

134 tinct signaling mechanism by two Galpha, one Gbeta, and two Ggamma proteins for pheromone responses,

135 n pathogen known to encode three Galpha, one Gbeta, and two Ggamma subunit proteins.

136 Both Galpha and Gbeta are associated with large macromolecular complexes

137 However, although effectors of Galpha and Gbeta are known in mammals, no Gbeta effectors were prev

138 he C-terminal tail in GPCR signaling, and of Gbeta as scaffold for recruiting Galpha subunits and G p

139 directs the redistribution of the G protein Gbeta as well as adherens junction proteins and Rho guan

140 ere, we report that G protein beta subunits (Gbeta) bind to DDB1 and that Gbeta2 targets GRK2 for ubi

141 majority of these 13 mutations affect known Gbeta binding sites, which suggests that a likely diseas

142 r, in contrast Ggamma1 competed with RP2 for Gbeta binding.

143 To study the effect of different Gbeta-binding partners on gamma11 function, four recombi

144 addition of Ggamma to previously synthesized Gbeta caused its release from the CCT/TRiC complex.

145 ates in the Gbetagamma assembly process, the Gbeta-CCT and the PhLP1-Gbeta-CCT complexes, were isolat

146 ssembly process, the Gbeta-CCT and the PhLP1-Gbeta-CCT complexes, were isolated and analyzed by a hyb

147 GPSM3 and Gbeta co-localize endogenously in THP-1 cells at the pla

148 Furthermore, Gbeta competes with the dynein intermediate chain for bi

149 nits from HEK293 or Neuro-2a cells with FLAG-Gbeta constructs identified multiple Ggamma subunits by

150 fectors and recently identified mutations in Gbeta correlate with poor clinical outcome.

151 interactions with CCT and releasing a PhLP1-Gbeta dimer for assembly with Ggamma.

152 of Galpha and Gbeta are known in mammals, no Gbeta effectors were previously known in plants.

153 amma1 localizes to protoplast membranes, but Gbeta exhibits membrane localization only when the Ggamm

154 Camelina plants with suppressed Gbeta expression exhibit higher lipase activity, and sho

155 PhLP1 binding stabilizes the Gbeta fold, disrupting interactions with CCT and releasi

156 ted protein kinase C1) Asc1 functions as the Gbeta for Gpa2.

157 levels of Gbeta and Ggamma, which depends on Gbeta for stability, decline.

158 tathione S-transferase (GST)-RP2 pulled down Gbeta from retinal lysates and the interaction was speci

159 When both Gbeta gamma and Galpha(q/11) were simultaneously buffere

160 was stable throughout the 1-2000 bars range, Gbeta gamma binding was stable only at high membrane con

161 terminal region of phospholipase C-beta1) or Gbeta gamma subunits (transducin and the carboxyl-termin

162 High pressure dissociated PLCbeta-Gbeta gamma with a DeltaV = 34 +/- 5 ml/mol.

163 ng mechanisms: a fast inhibition mediated by Gbeta gamma, a slow inhibition mediated by Galpha(q/11),

164 nt of inhibition was attenuated by buffering Gbeta gamma, whereas a slow component of inhibition was

165 s gives rise to a flexible sub-population of Gbeta/gamma heterodimers that are not necessarily restri

166 n plants homozygous for a null allele of the Gbeta gene, Galpha is associated with smaller complexes

167 Knockdown of Gbeta genes causes reduced longitudinal and enhanced tra

168 Although mammals contain five Gbeta genes comprising two classes (Gbeta1-like and Gbet

169 lacking specific combinations of Galpha and Gbeta genes, performed extensive phenotypic analysis, an

170 h a pathway that involves FFA receptors, the Gbeta/Ggamma complex, and RAC1.

171 all Ggamma subunit isoforms, generally with Gbeta/Ggamma stoichiometries between 0.2:1 and 0.5:1.

172 RP2 did not appear to interact with the Gbeta:Ggamma heterodimer, in contrast Ggamma1 competed w

173 ially prior to the formation of the obligate Gbeta:Ggamma heterodimer.

174 fungus Cryptococcus neoformans, noncanonical Gbeta Gib2 promotes cAMP signaling in cells lacking norm

175 ed the genes encoding three Galpha (Gpa1-3), Gbeta (Gpb1) and Ggamma (Gpg1) G proteins.

176 nce complementation studies suggest that the Gbeta-GPSM3 complex is formed at, and transits through,

177 etagamma dimer, including association of the Gbeta-GPSM3 complex with phosducin-like protein PhLP and

178 Discovery of a Gbeta/GPSM3 interaction, independent of Galpha.GDP and G

179 B1/amino-terminal yellow fluorescent protein-Gbeta heterodimer were localized in the plasma membrane,

180 ouse macrophages to characterize the role of Gbeta in G protein-coupled receptor signaling.

181 These data suggest a role for Gbeta in negatively regulating extracellular nucleotide

182 from CCT, allowing Ggamma to associate with Gbeta in this intermediate complex.

183 ospholipase C beta2 (PLC-beta2), a mammalian Gbeta interacting protein.

184 contribute to putative interfaces for other Gbeta interacting proteins.

185 The Gbeta interaction site within GPSM3 was mapped to a leuc

186 The structures show that Gbeta interacts with CCT in a near-native state through

187 direct contact interactions at the Galphai1-Gbeta interface; remarkably, the presence of R1 at the s

188 sphorylation permits the release of a PhLP x Gbeta intermediate from CCT, allowing Ggamma to associat

189 Association of Ggamma with Gbeta is necessary for this action of Gbeta.

190 he naive endothelium Gbeta1, the predominant Gbeta isoform is sequestered by receptor for activated C

191 Different FLAG-Gbeta isoforms coprecipitated CCT/TRiC to a variable ext

192 ng evidence for functional specificity among Gbeta isoforms in vivo.

193 s among coupling preferences for Gialpha and Gbeta isoforms.

194 These findings reveal that the Vps15 Gbeta-like domain serves as a scaffold to assemble Gpa1

195 ted C Kinase 1) homolog FvGbb2 as a putative Gbeta-like protein in F. verticillioides.

196 Despite structural similarity to Gbeta-like subunits, Cpc2p appears not to function at th

197 Gbeta-like/RACK1 functions as a key mediator of various

198 The atypical Gbeta-like/RACK1 Gib2 protein promotes cAMP signalling t

199 wo-hybrid screen, we have identified a novel Gbeta-like/RACK1 protein homolog, Gib2, from the human p

200 -cystamine) modification of a single site on Gbeta, likely GbetaCys204, and inhibits Gbetagamma more

201 ical G protein complex with the kelch repeat Gbeta mimic proteins Gpb1 and Gpb2.

202 otes membrane localization of its associated Gbeta mimic subunit Gpb2.

203 Gpa2 forms a protein complex with the kelch Gbeta mimic subunits Gpb1/2, and previous studies demons

204 ites what, if any, additional regions of the Gbeta molecular surface comprise interaction interfaces

205 Gbeta mutant floor cells are unable to control the width

206 to control the width of the appendage while Gbeta mutant leading roof cells fail to direct the elong

207 Leaves of older Gbeta mutant plants show much less cell death when infil

208 The transcriptional response of Gbeta mutant plants to Tm is less pronounced than that o

209 The different Tm sensitivities of Galpha and Gbeta mutants, the ER localization of Gbeta, and the dif

210 hemical data highlight specific sites within Gbetas needed for protein interactions.

211 We report that gbeta null cells display PI3K and Ras activation, as wel

212 creened for dominant mutations that suppress Gbeta-null mutant (agb1-2) phenotypes.

213 to complement well-established phenotypes of Gbeta-null mutants revealed AGB1 residues critical for s

214 Seedlings of homozygous agb1-2 (Gbeta-null mutation) mutant plants are markedly more res

215 s, the phenotypes of plants lacking the sole Gbeta or all Ggamma genes are similar, as expected.

216 coexpressed Gbeta, whereas excess of either Gbeta or Ggamma imparted suboptimal activation, possibly

217 d, which was labeled by either (35)S-labeled Gbeta or Ggamma, indicating that it is a dimer.

218 on unaccompanied by overexpression of either Gbeta or Ggamma1.

219 rphine treatment; it negated the increase in Gbeta phosphorylation and PKCgamma translocation while r

220 ne treatment of these cells increased AC and Gbeta phosphorylation, membrane protein kinase Cgamma (P

221 Substitutions of residues within this Gbeta-PLC-beta2 interface reduce the activation of PLC-b

222 ssembly in which PhLP stabilizes the nascent Gbeta polypeptide until Ggamma can associate, resulting

223 sults reveal a non-canonical function of the Gbeta protein as a ubiquitin ligase component and a mech

224 he late peak is normal in plants lacking the Gbeta protein but missing in plants lacking the Galpha p

225 Previously, we demonstrated that Gbeta protein FvGbb1 directly impacts fumonisin regulati

226 A majority of the Arabidopsis Gbeta protein is associated with the endoplasmic reticul

227 Consistent with its ER localization, Gbeta protein is degraded during the UPR, whereas Galpha

228 together, these observations imply that the Gbeta protein, which forms a stable heterodimer with the

229 upting polarized distribution of F-actin and Gbeta protein.

230 tionary approach predicts previously unknown Gbeta-protein interfaces.

231 larization of the mating-specific Galpha and Gbeta proteins and that the changes in G protein localiz

232 expressing pPLAIIIdelta, suggesting that the Gbeta proteins are negative regulators of pPLAIIIdelta.

233 Different mutations in Gbeta proteins clustered partly on the basis of lineage;

234 d the differential stabilities of Galpha and Gbeta proteins during the UPR suggest that the Gbetagamm

235 rogated expression of most of the Galpha and Gbeta proteins expressed in these cells, singly and some

236 demonstrate that recurrent mutations in the Gbeta proteins GNB1 and GNB2 confer cytokine-independent

237 However, the presence of single Galpha and Gbeta proteins in both these species has significantly u

238 a), an oil seed crop, we uncovered a role of Gbeta proteins in controlling anisotropic cell expansion

239 s employed to silence the natively expressed Gbeta proteins in rat SG tissue and to examine the coupl

240 ks in the same genetic pathway as one of the Gbeta proteins to control its development.

241 entially caused by the direct interaction of Gbeta proteins with a specific patatin-like phospholipas

242 As with other known Gbeta proteins, Asc1 has a 7-WD domain structure, intera

243 ependent interactions between the Galpha and Gbeta proteins.

244 Taken together, our data suggest that Gbeta regulates the strength of coupling between actin o

245 s of different Galpha proteins with the sole Gbeta remain unexplored.

246 comprise interaction interfaces essential to Gbeta's role as a nexus in numerous signaling cascades.

247 We provide evidence that GPSM3 increases Gbeta stability until formation of the Gbetagamma dimer,

248 at one of the three XLG genes, XLG3, and the Gbeta subunit (AGB1) of the Arabidopsis G-protein hetero

249 idopsis thaliana) Galpha subunit (GPA1), the Gbeta subunit (AGB1), and the candidate G-protein-couple

250 ctions as a novel scaffold that binds to the Gbeta subunit as well as to all three tiers of the MAPK

251 The Gbeta subunit belongs to a large family of WD40 repeat p

252 (GGL) domain, which is permanently bound to Gbeta subunit Gbeta(5), and the RGS domain responsible f

253 amily of RGS proteins bound to the divergent Gbeta subunit Gbeta5 is a crucial regulator of G protein

254 th the pheromone receptor homolog Ste3alpha, Gbeta subunit Gpb1, and RGS protein Crg1.

255 , Gpg1 and Gpg2, similar to the conventional Gbeta subunit Gpb1.

256 ls the receptor C-terminal tail bound to the Gbeta subunit of the G protein, providing a structural f

257 tudies show that Xpr1 is associated with the Gbeta subunit of the G-protein heterotrimer.

258 phenotype is independently modulated by the Gbeta subunit of the heterotrimeric G-protein complex.

259 w that RP2 can facilitate the traffic of the Gbeta subunit of transducin (Gbeta1).

260 subunits functioning in fungi, only a single Gbeta subunit per species has been identified, suggestin

261 is mediated by Gbetagamma, but the specific Gbeta subunit that modulates the channels is not known.

262 ort that the sole Arabidopsis heterotrimeric Gbeta subunit, AGB1, is required for four guard cell Ca(

263 complex is formed between PhLP, the nascent Gbeta subunit, and CCT that does not include Ggamma.

264 ependent posttranslational modification of a Gbeta subunit, establish Ste4 as a new substrate of the

265 and form obligatory dimers with the atypical Gbeta subunit, Gbeta5 They also interact with other prot

266 findings reveal the existence of an unusual Gbeta subunit, one having multiple functions within the

267 protein coupling via an interaction with the Gbeta subunit.

268 it in tomato and strongly interacts with the Gbeta subunit.

269 nsduction can function efficiently without a Gbeta subunit.

270 mutant lacking the heterotrimeric G protein Gbeta-subunit exhibited a remarkably higher [Ca(2+)](cyt

271 The Arabidopsis (Arabidopsis thaliana) Gbeta-subunit of this complex (AGB1) interacts with and

272 f crystal structures of complexes containing Gbeta subunits and complementary biochemical data highli

273 aperonin CCT/TRiC complex binds to and folds Gbeta subunits and that CCT/TRiC mediates Gbetagamma dim

274 We also confirmed that Gbeta subunits are necessary for stable accumulation of

275 tematically silencing each of the Galpha and Gbeta subunits by using small interfering RNA while quan

276 ime-lapse microscopy to elucidate Galpha and Gbeta subunits contributing to complement C5a receptor-m

277 Gbeta subunits demonstrated little isoform specificity f

278 site within GPSM3 directed toward monomeric Gbeta subunits during their biosynthesis.

279 Gbeta subunits from heterotrimeric G-proteins (guanine n

280 we report that GPSM3 also interacts with the Gbeta subunits Gbeta1 to Gbeta4, independent of Ggamma o

281 human cancers, but oncogenic alterations in Gbeta subunits have not been defined.

282 ble the binding of Galpha subunits to either Gbeta subunits or effectors, but it instead represents a

283 determined by the combination of Gialpha and Gbeta subunits rather than by the identity of an individ

284 correlated with the ability of the different Gbeta subunits to efficiently form dimers with Ggamma.

285 contrast, in vitro translated, (35)S-labeled Gbeta subunits traveled at a high apparent molecular mas

286 CT7), two known chaperones of neosynthesized Gbeta subunits.

287 -bladed propeller resembling that of typical Gbeta subunits.

288 functionally distinguish Gbeta(2) from other Gbeta subunits.

289 xpress equimolar amounts of total Galpha and Gbeta subunits.

290 determining the concentrations of Galpha and Gbeta subunits; 2) examining receptor-dependent activiti

291 Thus, ablation of the Gbeta-subunits destabilized Galpha- and Ggamma-subunits

292 E2 and UTP was not observed in cells lacking Gbeta-subunits.

293 ol were all eliminated in the absence of the Gbeta-subunits.

294 rabidopsis thaliana contains one Galpha, one Gbeta, three Ggamma, and one RGS protein.

295 GIRK1* and GIRK1/3 channel's gating, aiding Gbeta to trigger the channel's opening.

296 e for Golgi-localized Gbetagamma, endogenous Gbeta was detected at the Golgi in HeLa cells.

297 and was enhanced by low doses of coexpressed Gbeta, whereas excess of either Gbeta or Ggamma imparted

298 hange is obtained for a peptide derived from Gbeta which also activates PLCbeta.

299 s inhibition led to increased association of Gbeta with CCT/TRiC.

300 interactions of the Ggamma-binding region of Gbeta with the CCTgamma subunit.