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Cited by 275

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Apg14p and Apg6/Vps30p Form a Protein Complex Essential for Autophagy in the Yeast, Saccharomyces cerevisiae

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Kametaka, Satoshi, Okano, Takafumi, Ohsumi, Mariko, Ohsumi, Yoshinori·1998·Journal of Biological Chemistry

Abstract

Mutation in the Saccharomyces cerevisiae APG14 gene causes a defect in autophagy. Cloning and structural analysis of the APG14 gene revealed that APG14 encodes a novel hydrophilic protein with a predicted molecular mass of 40.5 kDa, and that Apg14p has a coiled-coil motif at its N terminus region. We found that overproduction of Apg14p partially reversed the defect in autophagy induced by the apg6-1 mutation. The apg6-1 mutant was found to be defective not only in autophagy but also in sorting of carboxypeptidase Y (CPY), a vacuolar-soluble hydrolase, to the vacuole. However, overexpression of APG14 did not alter the CPY sorting defect of the apg6-1 mutant, nor did the apg14 null mutation affect the CPY sorting pathway. Structural analysis of APG6 revealed that APG6 is identical to VPS30, which is involved in a retrieval step of the CPY receptor, Vps10p, to the late-Golgi from the endosome (Seaman, M. N. J., Marcusson, E. G., Cereghino, J. L., and Emr, S. D. (1997) J. Cell Biol. 137, 79-92). Subcellular fractionation indicated that Apg14p and Apg6p peripherally associated with a membrane structure(s). Apg14p was co-immunoprecipitated with Apg6p, suggesting that they form a stable protein complex. These results imply that Apg6/Vps30p has two distinct functions in the autophagic process and the vacuolar protein sorting pathway. Apg14p may be a component specifically required for the function of Apg6/Vps30p through the autophagic pathway.

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Metadata

Authors
Kametaka, S., Okano, T., Ohsumi, M., & Ohsumi, Y.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1998-08
Volume
273
Issue
35
Pages
22284-22291
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1979228758
Cited by
275
References
1
FWCI
8.46
Type
journal article
Language
en
Open access
hybrid

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