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Title: Differences between predicted and observed sequences in Saccharomyces cerevisiae
Authors: Santucci, Annalisa 
Trabalzini, Lorenza 
Bovalini, Lucia
Neri, Paolo
Martelli, Paola
Keywords: Saccharomyces cerevisiae; proteome; two-dimensional electrophoresis; wine yeast
Issue Date: 2000
Project: None 
We recently studied the protein composition of a Saccharomyces cerevisiae wine yeast strain (K310) of enological interest. About 2500 spots of 8-250 kDa observed molecular mass were resolved by two-dimensional gel electrophoresis. Experimental molecular masses and isoelectric points were calculated for most of them. Twenty-seven proteins were subjected to Edman microsequencing. N-terminal sequences of 12/27 proteins were determined, whereas internal sequences of 6/27 proteins were obtained following in situ proteolysis. Comparison between the experimental data and those reported in the SWISS-PROT database revealed some differences between genotypic and phenotypic sequences. These are indicative of the changes a protein can undergo with respect to the primary structure coded by the genomic DNA. Our results highlight the need to complement genomic analysis with detailed proteomics in order to refine the vast amount of information provided by DNA sequencing and to find an exact correlation between genome and proteome.
ISSN: 0173-0835
DOI: 10.1002/1522-2683(200011)21:17<3717
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