| RRC ID |
2239
|
| 著者 |
Morita T, Tanaka N, Hosomi A, Giga-Hama Y, Takegawa K.
|
| タイトル |
An alpha-amylase homologue, aah3, encodes a GPI-anchored membrane protein required for cell wall integrity and morphogenesis in Schizosaccharomyces pombe.
|
| ジャーナル |
Biosci Biotechnol Biochem
|
| Abstract |
Glycosylphosphatidylinositol (GPI)-anchored proteins are essential for normal cellular morphogenesis and have an additional role in mediating cross-linking of glycoproteins to cell wall glucan in yeast cells. Although many GPI-anchored proteins have been characterized in Saccharomyces cerevisiae, none have been reported for well-characterized GPI-anchored proteins in Schizosaccharomyces pombe to date. Among the putative GPI-anchored proteins in S. pombe, four alpha-amylase homologs (Aah1p-Aah4p) have putative signal sequences and C-terminal GPI anchor addition signals. Disruption of aah3(+) resulted in a morphological defect and hypersensitivity to cell wall-degrading enzymes. Biochemical analysis showed that Aah3p is an N-glycosylated, GPI-anchored membrane protein localized in the membrane and cell wall fractions. Conjugation and sporulation were not affected by the aah3(+) deletion, but the ascal wall of aah3Delta cells was easily lysed by hydrolases. Expression of aah3 alleles in which the conserved aspartic acid and glutamic acid residues required for hydrolase activity were replaced with alanine residues failed to rescue the morphological and ascal wall defects of aah3Delta cells. Taken together, these results indicate that Aah3p is a GPI-anchored protein and is required for cell and ascal wall integrity in S. pombe.
|
| 巻・号 |
70(6)
|
| ページ |
1454-63
|
| 公開日 |
2006-6-1
|
| DOI |
10.1271/bbb.50693
|
| PII |
JST.JSTAGE/bbb/50693
|
| PMID |
16751704
|
| MeSH |
Actins / metabolism
Amino Acid Sequence
Cell Shape
Cell Wall / metabolism*
Conserved Sequence
Glycosylation
Glycosylphosphatidylinositols / metabolism*
Hydrolysis
Membrane Proteins / chemistry
Membrane Proteins / genetics
Membrane Proteins / metabolism*
Molecular Sequence Data
Mutation / genetics
Schizosaccharomyces / cytology*
Schizosaccharomyces / genetics
Schizosaccharomyces / growth & development
Schizosaccharomyces / metabolism*
Schizosaccharomyces pombe Proteins / chemistry
Schizosaccharomyces pombe Proteins / genetics
Schizosaccharomyces pombe Proteins / metabolism*
Schizosaccharomyces pombe Proteins / physiology
Sequence Alignment
alpha-Amylases / classification
alpha-Amylases / genetics
alpha-Amylases / metabolism*
alpha-Amylases / physiology
|
| IF |
1.516
|
| 引用数 |
12
|
|
WOS 分野
|
CHEMISTRY, APPLIED
FOOD SCIENCE & TECHNOLOGY
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
BIOCHEMISTRY & MOLECULAR BIOLOGY
|
| リソース情報 |
| 酵母 |
KJ100-7B |
