Comparative studies of differential expression of chitinolytic enzymes encoded by chiA, chiB, chiC and nagA genes in Aspergillus nidulans
Jazyk angličtina Země Spojené státy americké Médium print
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
17455791
DOI
10.1007/bf02931619
Knihovny.cz E-zdroje
- MeSH
- acetylglukosamin farmakologie MeSH
- Aspergillus nidulans enzymologie genetika fyziologie MeSH
- chitinasy biosyntéza genetika MeSH
- DNA fungální genetika MeSH
- enzymová indukce MeSH
- fungální proteiny biosyntéza genetika MeSH
- fylogeneze MeSH
- oligosacharidy farmakologie MeSH
- oxidace-redukce MeSH
- reaktivní formy kyslíku metabolismus MeSH
- regulace genové exprese u hub * MeSH
- uhlík metabolismus MeSH
- výpočetní biologie MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- acetylglukosamin MeSH
- chitinasy MeSH
- DNA fungální MeSH
- fungální proteiny MeSH
- oligosacharidy MeSH
- reaktivní formy kyslíku MeSH
- uhlík MeSH
N-Acetyl-D-glucosamine, chito-oligomers and carbon starvation regulated chiA, chiB, and nagA gene expressions in Aspergillus nidulans cultures. The gene expression patterns of the main extracellular endochitinase ChiB and the N-acetyl-beta-D-glucosaminidase NagA were similar, and the ChiB-NagA enzyme system may play a morphological and/or nutritional role during autolysis. Alterations in the levels of reactive oxygen species or in the glutathione-glutathione disulfide redox balance, characteristic physiological changes developing in ageing and autolyzing fungal cultures, did not affect the regulation of either the growth-related chiA or the autolysis-coupled chiB genes although both of them were down-regulated under diamide stress. The transcription of the chiC gene with unknown physiological function was repressed by increased intracellular superoxide concentration.
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