Patent ID: 7314743

Claim:
A modified xylanase comprising a polypeptide having an amino acid sequence as set forth in SEQ ID NO:1, comprising amino acid substitutions at positions 2, 28, 58, and +191, further comprising at least one other substituted amino acid residue at a position selected from the group consisting of: 5, 7, 10, 11, 16, 19, 22, 26, 29, 30, 34, 36, 38, 57, 61, 63, 65, 67 92, 93, 97, 105, 108, 110, 111, 113, 132, 143, 144, 147, 149, 151, 153, 157, 160, 162, 165, 169, 180, 184, 186, 188, and 190, wherein the position of the substituted amino acid is numbered from the amino acid after the signal and pro sequence, wherein said modified xylanase has at least 90% sequence identity to SEQ ID NO:1 and has xylanase activity.