Journal
LETTERS IN APPLIED MICROBIOLOGY
Volume 34, Issue 2, Pages 119-123Publisher
WILEY
DOI: 10.1046/j.1472-765x.2002.01057.x
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Aims: To express a gene encoding a heterologous fungal xylanase in Trichoderma reesei. Methods and Results: Humicola grisea xylanase 2 (xyn2) cDNA was expressed in Trichoderma reesei under the main cellobiohydrolase I (cbh1) promoter (i) as a fusion to the cellobiohydrolase I (CBHI) secretion signal and (ii) the mature CBHI core-linker. The recombinant xylanase (HXYN2) was secreted into the cultivation medium and processed in a similar fashion to the endogenous T. reesei xylanases, resulting in an active enzyme. Conclusions, Significance and Impact of the Study: HXYN2 was successfully processed in T. reesei. Composition of the culture medium affected the HXYN2 yields, favouring Avicel-lactose as a carbon source. Best yields (about 0.5 g l(-1)) in shake flask cultivations were obtained from a transformant where xyn2 was fused directly to the CBHI secretion signal.
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