Journal
JOURNAL OF MICROBIOLOGY
Volume 47, Issue 2, Pages 225-228Publisher
MICROBIOLOGICAL SOCIETY KOREA
DOI: 10.1007/s12275-008-0247-3
Keywords
chitinase; gene expression; inky cap
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Funding
- Korea Research Foundation
- Korean Government (MOEHRD) [KRF-2006-311-C00540]
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Fungal cell walls consist of various glucans and chitin. An inky cap, Coprinellus congregates, produced mushrooms at 25A degrees C in a regime of 15 h light/9 h dark, and then the mushroom was autolyzed rapidly to generate black liquid droplets where no cell wall was detected by microscopy. A chitinase cDNA from the matured mushroom cells of C. congregates that consisted of 1,541 nucleotides was successfully cloned using the rapid amplification of cDNA ends (RACE)-PCR technique. Its deduced 441 amino acid sequence had the conserved catalytic domain as in other fungal chitinase family 18. Chitinase activity was higher at the matured mushroom stage than primordial and young mushroom stage. When the expression of the cloned chitinase was examined by real-time PCR using the chitinase-specific primers, it was increased more than twice to 20 times during the autolytic process of mushroom than young mushroom or primordial stages, respectively.
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