Cloning and expression of xylanase genes from fungal origin

摘要

PCT No. PCT/NL91/00137 Sec. 371 Date Apr. 27, 1992 Sec. 102(e) Date Apr. 27, 1992 PCT Filed Jul. 24, 1991 PCT Pub. No. WO92/01793 PCT Pub. Date Feb. 6, 1992.Methods and expression constructs are provided for the cloning and overexpression of xylanases of fungai origin in a selected microbial host cell. Xylanases of fungal origin generally have lower pH optima and remain stable over a broader pH range than do xylanases of bacterial origin. The present invention provides for the high level production of fungal xylanases which are may be used in a variety of industrial applications requiring xylanase activity at a low pH.