Cyclic AMP regulates the biosynthesis of cellobiohydrolase in Cellulomonas Xavigena growing in sugar cane bagasse

Jesús Antonio Herrera-Herrera, Odilia Pérez-Avalos, Luis M. Salgado, Teresa Ponce-Noyola

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Cellulomonas Xavigena produces a battery of cellulase components that act concertedly to degrade cellulose. The addition of cAMP to repressed C. Xavigena cultures released catabolic repression, while addition of cAMP to induced C. Xavigena cultures led to a cellobiohydrolase hyperproduction. Exogenous cAMP showed positive regulation on cellobiohydrolase production in C. Xavigena grown on sugar cane bagasse. A C. Xavigena cellobiohydrolase gene was cloned (named celA), which coded for a 71- kDa enzyme. Upstream, a repressor celR1, identiWed as a 38 kDa protein, was monitored by use of polyclonal antibodies.

Original languageEnglish
Pages (from-to)745-750
Number of pages6
JournalArchives of Microbiology
Volume191
Issue number10
DOIs
StatePublished - 2009
Externally publishedYes

Keywords

  • CAMP regulation
  • Cellobiohydrolase
  • Cellulomonas Xavigena

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