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Reference - PMID:16357443 - A role for fission yeast Rab GTPase Ypt7p in sporulation.

Reference summary

PubMed ID
PMID:16357443
Title
A role for fission yeast Rab GTPase Ypt7p in sporulation.
Authors
Kashiwazaki J, Nakamura T, Iwaki T, Takegawa K, Shimoda C
Citation
Cell Struct Funct 2005;30(2):43-9
Publication year
2005
Abstract
Ypt7p, a fission yeast (Schizosaccharomyces pombe) homologue of Rab7 GTPase, mediates fusion of endosomes to vacuoles and homotypic vacuole fusion. Here, we report that Ypt7p plays important roles in sporulation. Most ypt7Delta asci produced less than four spores, which were apparently immature and germinated at low frequency. Furthermore, ypt7Delta cells were defective in development of the forespore membranes. Vacuoles in sporulating cells were found to undergo extensive homotypic vacuole fusion to form a few large compartments occupying the entire cytoplasm of asci. This extensive vacuole fusion depended on Ypt7p.

Annotation

GO biological process

GO:0042144 - vacuole fusion, non-autophagic

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GO cellular component

GO:0000329 - fungal-type vacuole membrane

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Single locus phenotype

FYPO:0001914 - abnormal prospore membrane formation

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Genotypes:

FYPO:0003139 - abnormal sporulation resulting in formation of ascus containing anucleate spores

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FYPO:0003066 - abnormal sporulation resulting in formation of ascus with fewer than four spores

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FYPO:0000581 - decreased spore germination frequency

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FYPO:0000346 - small spores

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FYPO:0003590 - small vacuoles during sporulation

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