A novel Arabidopsis thaliana dynamin-like protein containing the pleckstrin homology domain.

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Abstract
A full‐length cDNA encoding a novel type of plant dynamin‐like protein, ADL3, was isolated from Arabidopsis thaliana. ADL3 is a high molecular weight GTPase whose GTP‐binding domain shows a low homology to those of other plant dynamin‐like proteins. ADL3 contains the pleckstrin homology domain as is in mammalian dynamins, although other plant dynamin‐like proteins reported lack this domain. The ADL3 gene was expressed weakly in various tissues, except for siliques with high level expression, which is distinct from the case for other plant dynamin‐like protein genes. Taken together, it is predicted that the mode of activation of ADL3 is different from those of other plant homologues.