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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Gene Review: 

AGB1  -  guanine nucleotide-binding protein subunit...

Arabidopsis thaliana

Synonyms: ARABIDOPSIS G-PROTEIN BETA SUBUNIT, ATAGB1, ELK4, ERECTA-LIKE 4, GTP binding protein beta 1, ...
 
 
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High impact information on AGB1

  • Analysis of agb1-1 er double mutants suggests that AGB1 may function in an ER developmental pathway regulating silique width but that it functions in parallel pathways affecting silique length as well as leaf and stem development [1].
  • Arabidopsis thaliana seedlings lacking the beta subunit (AGB1) of the G protein complex have altered cell division in the hypocotyl and are d-glucose hypersensitive [2].
  • Our data show that GPA1, AGB1, and GCR1 each negatively regulates ABA signaling in seed germination and early seedling development [3].
  • The model organism Arabidopsis thaliana contains a restricted set of heterotrimeric G-protein subunits, with only one canonical Galpha subunit (AtGPA1), one Gbeta subunit (AtAGB1), and two Ggamma subunits (AtAGG1 and AtGG2) identified [4].
  • A strong interaction between AGG2 and both the tobacco (TGB1) and Arabidopsis (AGB1) beta-subunits was observed in vivo using the yeast two-hybrid system [5].
 

Associations of AGB1 with chemical compounds

  • Consistent with AGB1 localization, SGB1 is found at the highest steady-state level in tissues with active cell division, and this level increases in hypocotyls when grown on d-glucose and sucrose [2].

References

  1. A mutant Arabidopsis heterotrimeric G-protein beta subunit affects leaf, flower, and fruit development. Lease, K.A., Wen, J., Li, J., Doke, J.T., Liscum, E., Walker, J.C. Plant Cell (2001) [Pubmed]
  2. A Golgi-localized Hexose Transporter Is Involved in Heterotrimeric G Protein-mediated Early Development in Arabidopsis. Wang, H.X., Weerasinghe, R.R., Perdue, T.D., Cakmakci, N.G., Taylor, J.P., Marzluff, W.F., Jones, A.M. Mol. Biol. Cell (2006) [Pubmed]
  3. G-protein complex mutants are hypersensitive to abscisic acid regulation of germination and postgermination development. Pandey, S., Chen, J.G., Jones, A.M., Assmann, S.M. Plant Physiol. (2006) [Pubmed]
  4. Purification and in vitro functional analysis of the Arabidopsis thaliana regulator of G-protein signaling-1. Willard, F.S., Siderovski, D.P. Meth. Enzymol. (2004) [Pubmed]
  5. Isolation of a novel G-protein gamma-subunit from Arabidopsis thaliana and its interaction with Gbeta. Mason, M.G., Botella, J.R. Biochim. Biophys. Acta (2001) [Pubmed]
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