| Literature DB >> 11408654 |
H Ullah1, J G Chen, J C Young, K H Im, M R Sussman, A M Jones.
Abstract
The alpha subunit of a prototypical heterotrimeric GTP-binding protein (G protein), which is encoded by a single gene (GPA1) in Arabidopsis, is a modulator of plant cell proliferation. gpa1 null mutants have reduced cell division in aerial tissues throughout development. Inducible overexpression of GPA1 in Arabidopsis confers inducible ectopic cell division. GPA1 overexpression in synchronized BY-2 cells causes premature advance of the nuclear cycle and the premature appearance of a division wall. Results from loss of function and ectopic expression and activation of GPA1 indicate that this subunit is a positive modulator of cell division in plants.Entities:
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Year: 2001 PMID： 11408654 DOI： 10.1126/science.1059040
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728