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KMID : 1160220110390040243
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Mycobiology
2011 Volume.39 No. 4 p.243 ~ p.248
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The Ubiquitin-Proteasome System and F-box Proteins in Pathogenic Fungi
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Liu Tong-Bao
Xue Chaoyang
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Abstract
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The ubiquitin-proteasome system is one of the major protein turnover mechanisms that plays important roles in the regulation of a variety of cellular functions. It is composed of E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3 ubiquitin ligases that transfer ubiquitin to the substrates that are subjected to degradation in the 26S proteasome. The Skp1, Cullin, F-box protein (SCF) E3 ligases are the largest E3 gene family, in which the F-box protein is the key component to determine substrate specificity. Although the SCF E3 ligase and its F-box proteins have been extensively studied in the model yeast Saccharomyces cerevisiae, only limited studies have been reported on the role of F-box proteins in other fungi. Recently, a number of studies revealed that F-box proteins are required for fungal pathogenicity. In this communication, we review the current understanding of F-box proteins in pathogenic fungi.
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KEYWORD
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Cryptococcus neoformans, E3 ligase, F-box, Fungi, Virulence
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