Sar1 | Secretion-associated and Ras-related protein 1
AS08 326 | Clonality: Polyclonal | Host: Rabbit | Reactivity: A. thaliana, D. sanguinalis, Echinochloa crus-galli E. neomexicana, P. miliaceum, P. maximum, P. vittata, T. aestivum, Z. mays
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21 kDa (Arabidopsis thaliana)
For immunogold experiments plant tissue has been fixed with GA in PFA/PIPES. LR White resin has been used. Tested species were: Triticum aestivum, Panicum miliaceum, Panicum maximum, Echinochloa crus-galli Eragrostis neomexicana, Digitaria sanguinalis. Publication in preparation.
Sar1 belongs to a small GTPase superfamily and GTP binging activity. This protein is involved in intracellular protein transport. There are two different non-clathrin-coated vesicles that are responsible for transport between ER and the Golgi. Coat protein complexes involving membrane-associated GTP binging proteins – Arf1 and Sar1p for COPI and COPII are needed for formation of COP-coated vesicles. Sar1p is a cytosolic protein. It is temporarily recruited onto the membranes of the ER.
Liu et al. (2014). SCFSLF-mediated cytosolic degradation of S-RNase is required for cross-pollen compatibility in S-RNase-based self-incompatibility in Petunia hybrida. Front. Genet., 22 July 2014 | doi: 10.3389/fgene.2014.00228