RRC ID 2221
Author Iwaki T, Morita T, Tanaka N, Giga-Hama Y, Takegawa K.
Title Loss of a GPI-anchored membrane protein Aah3p causes a defect in vacuolar protein sorting in Schizosaccharomyces pombe.
Journal Biosci Biotechnol Biochem
Abstract Schizosaccharomyces pombe has four alpha-amylase homologs (Aah1p-Aah4p) with a glycosylphosphatidylinositol (GPI) modification site at the C-terminal end. Disruption mutants of aah genes were tested for mislocalization of vacuolar carboxypeptidase Y (CPY), and aah3Delta was found to secrete CPY. The conversion rate from pro- to mature CPY was greatly impaired in aah3Delta, and fluorescence microscopy inidicated that a sorting receptor for CPY, Vps10p, mislocalized to the vacuolar membrane. These results indicate that aah3Delta had a defect in the retrograde transport of Vps10p, and that Aah3p is the first S. pombe specific protein required for vacuolar protein sorting.
Volume 71(2)
Pages 623-6
Published 2007-2-1
DOI 10.1271/bbb.60609
PII JST.JSTAGE/bbb/60609
PMID 17284820
MeSH Cathepsin A / metabolism Fluorescence Glycosylphosphatidylinositols / genetics Glycosylphosphatidylinositols / physiology* Membrane Proteins / genetics Membrane Proteins / physiology* Microscopy, Fluorescence Mutation / physiology Plasmids / genetics Schizosaccharomyces / genetics Schizosaccharomyces / metabolism* Schizosaccharomyces pombe Proteins / genetics Schizosaccharomyces pombe Proteins / metabolism Schizosaccharomyces pombe Proteins / physiology* Vacuoles / genetics Vacuoles / metabolism* alpha-Amylases / genetics alpha-Amylases / metabolism alpha-Amylases / physiology*
IF 1.516
Times Cited 2
WOS Category CHEMISTRY, APPLIED FOOD SCIENCE & TECHNOLOGY BIOTECHNOLOGY & APPLIED MICROBIOLOGY BIOCHEMISTRY & MOLECULAR BIOLOGY
Resource
Yeast pTN197