THE PLANT CELL'S 100th Issue: Building an Exciting Future on a Strong Foundation.
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Biomedical subjects
B. A. Larkins
Publications and source records attributed to B. A. Larkins.
EF-1[alpha] Is Associated with a Cytoskeletal Network Surrounding Protein Bodies in Maize Endosperm Cells.
By using indirect immunofluorescence and confocal microscopy, we documented changes in the distribution of elongation factor-1[alpha] (EF-1[alpha]), actin, and microtubules during the development of maize endosperm cells. In older interphase cells actively forming starch grains and protein bodies, the protein bodies are enmeshed in EF-1[alpha] and actin and are found juxtaposed with a multidirectional array of microtubules. Actin and EF-1[alpha] appear to exist in a complex, because we observed that the two are colocalized, and treatment with cytochalasin D resulted in the redistribution of EF-1[alpa]. These data suggest that EF-1[alpha] and actin are associated in maize endosperm cells and may help to explain the basis of the correlation we found between the concentration of EF-1[alpha] and lysine content. The data also support the hypothesis that the cytoskeleton plays a role in storage protein deposition. The distributions of EF-1[alpha] actin, and microtubules change during development. We observed that in young cells before the accumulation of starch and storage protein, EF-1[alpha], actin, and microtubules are found mainly in the cell cortex or in association with nuclei.
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Still Having an Impact.
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