Document Detail


Induction of an oxalate decarboxylase in the filamentous fungus Trametes versicolor by addition of inorganic acids.
MedLine Citation:
PMID:  19266319     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In order to improve yields and to reduce the cost of oxalate decarboxylase (OxDC, EC 4.1.1.2), the induction of OxDC in the white-rot fungus Trametes versicolor was studied in this work. OxDC was induced by addition of inorganic acids including hydrochloric acid, sulfuric acid, and phosphoric acid to culture media. The results showed that all the acids could enhance OxDC expression. The activity of the acid-induced OxDC rose continuously. All of the OxDC volumetric activities induced by the inorganic acids were higher than 20.0 U/L and were two times higher than that obtained with oxalic acid. OxDC productivity was around 4.0 U*L(-1)*day(-1). The highest specific activity against total protein was 3.2 U/mg protein at day 8 after induction of sulfuric acid, and the specific activity against mycelial dry weight was 10.6 U/g at day 9 after induction of hydrochloric acid. The growth of mycelia was inhibited slightly when the pH values in culture media was around 2.5-3.0, while the growth was inhibited heavily when the pH was lower than 2.5.
Authors:
Cui Xia Zhu; Feng Hong
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-03-06
Journal Detail:
Title:  Applied biochemistry and biotechnology     Volume:  160     ISSN:  1559-0291     ISO Abbreviation:  Appl. Biochem. Biotechnol.     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2010-01-26     Completed Date:  2010-04-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8208561     Medline TA:  Appl Biochem Biotechnol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  655-64     Citation Subset:  IM    
Affiliation:
Donghua University, Shanghai, China.
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MeSH Terms
Descriptor/Qualifier:
Acids / metabolism*
Carboxy-Lyases / metabolism*
Fungal Proteins / metabolism*
Mycelium / growth & development
Trametes / enzymology*,  growth & development
Chemical
Reg. No./Substance:
0/Acids; 0/Fungal Proteins; EC 4.1.1.-/Carboxy-Lyases; EC 4.1.1.2/oxalate decarboxylase

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