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"Dinâmica" dos genes

Vídeo interessante! Click no linka abaixo e entenda mais sobre o DNA.

http://www.youtube.com/watch?v=rfuHAxA9Gpc

Autoria de terceiros.

Regulation of xylanase in Aspergillus phoenicis: a physiological and molecular approach

J Ind Microbiol Biotechnol (2008) 35:237–244

Ana Carolina Segato Rizzatti · Fernanda Zanolli Freitas · Maria Célia Bertolini · Simone Carvalho Peixoto-Nogueira · Héctor Francisco Terenzi · João Atílio Jorge · Maria de Lourdes Teixeira de Moraes Polizeli

Microbial xylanolytic enzymes have a promising biotechnological potential, and are extensively applied in industries. In this study, induction of xylanolytic activity was examined in Aspergillus phoenicis. Xylanase activity induced by xylan, xylose or beta-methylxyloside was predominantly extracellular (93–97%). Addition of 1% glucose to media supplemented with xylan or xylose repressed xylanase production. Glucose