A Rab-related small GTP binding protein is predominantly expressed in root nodules of Medicago sativa

Molecular Genetics and Genomics : MGG
K SchieneK Niehaus

Abstract

Rab-related small GTP-binding proteins are known to be involved in the regulation of the vesicular transport system in eucaryotic cells. In this paper we report the isolation of the cDNA clone MS- rab11f from Medicago sativa (alfalfa) root nodules using a combination of RT-PCR and SSCP analysis. MS- rab11f shows high homology to the Rab-related cDNA clone LJ- rab11f from Lotus japonicus root nodules. The MS-Rab11F protein expressed in Escherichia coli was found to bind GTP, confirming that the isolated cDNA indeed codes for a small GTP-binding protein. Expression analysis by RT-PCR demonstrated that MS- rab11f is preferentially expressed in root nodules of alfalfa. Using the cDNA-sequence of MS-rab11f, a peptide-specific antibody was generated. Western blot analysis with this antibody revealed that two Rab11F isoforms, designated MS-Rab11FA and MS-Rab11FB, are found in M. sativa root nodules.

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Citations

Jun 15, 2007·Molecular Genetics and Genomics : MGG·Sónia GonçalvesCélia Miguel
Apr 28, 2005·Plant Physiology and Biochemistry : PPB·Ivanka Asparuhova Yaneva, Karsten Niehaus
Oct 24, 2008·Journal of Experimental Botany·Grantley Lycett

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