Analysis of a Nicotiana plumbaginifolia cDNA encoding a novel small GTP‐binding protein
- 1 March 1992
- journal article
- research article
- Published by Wiley in FEBS Letters
- Vol. 299 (3) , 287-290
- https://doi.org/10.1016/0014-5793(92)80133-2
Abstract
Small GTP-binding proteins belonging to the Ras superfamily have been found in evolutionarily divergent organisms. Here, we report the isolation and analysis of a cDNA encoding a putative small GTP-binding protein, designated Rhn1, from the plant, Nicotiana plumbaginifolla. The 21.8-kDa protein has 60% amino acid similarity with the mammalian Rab5 proteins. The Rhn1 protein is encoded by a small multigene family. Northern analysis shows the highest steady-state mRNA levels to be in roots and flowers. Furthermore, the Rhnl protein has 80% amino acid similarity with an Arabidopsis small GTP-binding protein, designated Rha1Keywords
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