Patent ID: 7510860

Claim:
A modified Trichoderma reesei xylanase II selected from the group consisting of: a modified Trichoderma reesei xylanase II comprising TrX-N10H-Y27M-N29L-S75A-L105H-Q125A-I129E-H144R; a modified Trichoderma reesei xylanase II comprising TrX-N10H-Y27M-N29L-S75A-L105H-Q125A-I129E-H144R-Q161R; a modified Trichoderma reesei xylanase II comprising TrX-D116G; a modified Trichoderma reesei xylanase II comprising TrX-Y118C; a modified Trichoderma reesei xylanase II comprising TrX-H144R; a modified Trichoderma reesei xylanase II comprising TrX-H144R-Q161R; a modified Trichoderma reesei xylanase II comprising TrX-N10H-Y27M-N29L-S75A-L105H-D116G-Q125A-I129E-H144R; a modified Trichoderma reesei xylanase II comprising TrX-N10H-Y27M-N29L-S75A-L105H-Y118C-Q125A-I129E-H144R; a modified Trichoderma reesei xylanase II comprising TrX-N10H-N11D-Y27M-N29L-S75A-L105H-Q125A-I129E-H144R-Q161R; a modified Trichoderma reesei xylanase II comprising TrX-N10H-N11D-Y27M-N29L-S75A-L105H-D116G-Q125A-I129E-H144R-Q161R; a modified Trichoderma reesei xylanase II comprising TrX-N10H-N11D-Y27M-N29L-S75A-L105H-Y118C-Q125A-I129E-H144R-Q161R; and a modified Trichoderma reesei xylanase II comprising TrX-N10H-N11D-Y27M-N29L-S75A-L105H-D116G-Y118C-Q125A-I129E-H144R-Q161R; wherein the modified Trichoderma reesei xylanase II comprises an amino acid sequence that is from 93 to 99% identical to SEQ ID NO: 16, exhibits activity on a xylan substrate and improved thermophilicity in comparison to a corresponding native Trichoderma reesei xylanase II with an amino acid sequence as set forth in SEQ ID NO:16.