XYLANASE VERSIONS AND POLYNUCLEOTIDES ENCODING THEM Russian patent published in 2021 - IPC C12N9/24 

FIELD: biotechnology.

SUBSTANCE: invention relates to biotechnology, it is a xylanase version, providing for a replacement in one or more positions corresponding to the positions 24, 26, 36, 37, 60, 71, 74, 75, 76, 124, 133, 155, 167, 208, 317 and 321 of SEQ ID NO: 1, wherein the specified replacement is selected from a group consisting of H24W, A26E, R36L, R36T, E37T, R60N, K71T, K71I, V74L, V74I, K75N, K75L, H76L, I155M, N167E, V208L, S317D, and G321A; wherein the xylanase version has xylanase activity, and wherein the xylanase version is characterized by a sequence, which is at least 90%, at least 95%, at least 96%, at least 97%, at least 98%, or at least 99%, but less than 100% identical to SEQ ID NO: 1, 2, 3, 4, 5 or 6; and wherein the specified version has improved thermal stability compared to SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, and SEQ ID NO: 6. The invention also relates to the use of this xylanase version in animal feed and for the production of a baking product.

EFFECT: invention makes it possible to obtain a thermally stable xylanase version.

36 cl, 1 dwg, 3 tbl, 4 ex