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The exocyst is a protein complex that is essential for polarized secretion in mammals and fungi. Although the exocyst is essential for plant development, its precise function has not been elucidated. We studied the role of exocyst subunit SEC3A in plant development and its subcellular localization.T‐DNA insertional mutants were identified and complemented with a SEC3A‐green fluorescent protein (GFP)...
Cellulose synthase (CESA) molecules are the building blocks and catalytic centers of the CESA complex. The study of mutants in Arabidopsis has led to insight into the structure of these nanomachines. Inside the plasma membrane, the CESA molecules are arranged in complexes, which, apart from the CESA molecules proper, contain other, mostly unidentified, proteins. We developed a theory in which CESA...
Immunochemical detection of actin as well as spectrin-like proteins have been carried out in the green algae Micrasterias denticulata, Closterium lunula, and Euastrum oblongum. In these algae, actin is detected on Western blots at 43kDa with antibodies to actin from higher plant and animal origin. By use of antibodies to human and chicken erythrocyte spectrin a cross-reactivity with desmid proteins...
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