A proteomic approach for the study of Saccharomyces cerevisiae cell wall biogenesis

被引:0
|
作者
Pardo, M
Ward, M
Bains, S
Molina, M
Blackstock, W
Gil, C [1 ]
Nombela, C
机构
[1] Univ Complutense Madrid, Fac Farm, Dept Microbiol 2, E-28040 Madrid, Spain
[2] Glaxo Wellcome Res & Dev Ltd, Cell Mapping Project, Med Res Ctr, Stevenage SG1 2NY, Herts, England
关键词
proteomics; Saccharomyces cerevisiae; cell wall biogenesis; mass spectrometry; protoplasts;
D O I
10.1002/1522-2683(20001001)21:16<3396::AID-ELPS3396>3.0.CO;2-J
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
In fungi, cell shape is determined by the presence of a rigid cell wall which separates the cell from the extracellular medium. This highly dynamic structure is essential for the maintenance of cell integrity and is involved in several phenomena such as flocculation, adherence and pathogenicity. The composition of the fungal cell wall is well known, but issues such as the assembly and remodeling of its components remain poorly understood. In an attempt to study the de novo construction of the yeast cell wall, we have undertaken a large-scale proteomic approach to analyze the proteins secreted by regenerating protoplasts. Upon incubation of protoplasts in regenerating conditions, numerous proteins are secreted into the culture medium. These presumably include proteins destined for the cell wall, comprising both structural proteins as well as enzymes involved in cell wall biogenesis. This work reports the establishment of a reference map of proteins secreted by regenerating protoplasts by means of two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) and their identification by mass spectrometry. Thirty-two different proteins have been identified, including known cell wall proteins, glycolytic enzymes, heat shock proteins, and proteins involved in several other processes. Using this approach, novel proteins possibly involved in cell wall construction have also been identified. This reference map will allow comparative analyses to be carried out on a selected collection of mutants affected in the cell wall.
引用
收藏
页码:3396 / 3410
页数:15
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