Database: PubMed
Entry: 10036779
LinkDB: 10036779
Original site: 10036779 
     Santoni V, Rouquie D, Doumas P, Mansion M, Boutry M, Degand H,
     Dupree P, Packman L, Sherrier J, Prime T, Bauw G, Posada E,
     Rouze P, Dehais P, Sahnoun I, Barlier I, Rossignol M.
     Use of a proteome strategy for tagging proteins present at the plasma membrane.
     Plant J. 1998 Dec;16(5):633-41.
     A plasma membrane (PM) fraction was purified from Arabidopsis thaliana using a
     standard procedure and analyzed by two-dimensional (2D) gel electrophoresis. The 
     proteins were classified according to their relative abundance in PM or cell
     membrane supernatant fractions. Eighty-two of the 700 spots detected on the PM 2D
     gels were microsequenced. More than half showed sequence similarity to proteins
     of known function. Of these, all the spots in the PM-specific and PM-enriched
     fractions, together with half of the spots with similar abundance in PM fraction 
     and supernatant, have previously been found at the PM, supporting the validity of
     this approach. Extrapolation from this analysis indicates that (i) approximately 
     550 polypeptides found at the PM could be resolved on 2D gels; (ii) that numerous
     proteins with multiple locations are found at the PM; and (iii) that
     approximately 80% of PM-specific spots correspond to proteins with unknown
     function. Among the later, half are represented by ESTs or cDNAs in databases. In
     this way, several unknown gene products were potentially localized to the PM.
     These data are discussed with respect to the efficiency of organelle proteome
     approaches to link systematically genomic data to genome expression. It is
     concluded that generalized proteomes can constitute a powerful resource, with
     future completion of Arabidopsis genome sequencing, for genome-wide exploration
     of plant function.

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