A putative catabolite-repressed cell wall protein from the mycoparasitic fungus Trichoderma harzianum |
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Authors: | José M. Lora, Jé sus de la Cruz, Tahí a Bení tez, Antonio Llobell José A. Pintor-Toro |
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Affiliation: | (1) Instituto de Recursos Naturales y Agrobiología, CSIC, Apdo. 1052, Sevilla, Spain;(2) Instituto de Bioquímica Vegetal y Fotosíntesis, CSIC and Universidad de Sevilla, Apdo. 1113, Sevilla, Spain;(3) Departamento de Genética, Universidad de Sevilla, Apdo. 1095, Sevilla, Spain |
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Abstract: | A cDNA clone encoding a putative cell wall protein (Qid3) was isolated from a library prepared from chitin-induced mRNA in cultures of the mycoparasitic fungus Trichoderma harzianum. The predicted 14 kDa protein shows a potential signal peptide, several hydrophobic domains and certain motifs that are structurally similar to proline-rich and glycine-rich plant cell wall proteins. Expression of the qid3 gene is derepressed in the absence of glucose. When introduced in yeast, qid3 expression causes cell division arrest into cytokinesis and cell separation, probably due to its cell wall localization. |
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Keywords: | Trichoderma harzianum Cell wall proteins Proline- and glycine-rich proteins Myooparasitic fungi Stress |
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