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    Alpha-amylase variants and polynucleotides encoding same
    5.
    发明授权
    Alpha-amylase variants and polynucleotides encoding same 有权

    公开(公告)号：US11326153B2

    公开(公告)日：2022-05-10

    申请号：US16770797

    申请日：2018-12-07

    Applicant: NOVOZYMES A/S

    Inventor： Carsten Andersen ,  Vasudeva Prahlada Rao ,  Rakhi Saikia ,  Vivek Srivastava ,  Kendra Darlene Stallings

    IPC: C12N9/28 ,  C12P19/02 ,  C12P19/14 ,  C13K1/06

    Abstract: The present invention relates to alpha-amylase variants comprising a substitution at a position corresponding to position 188 and at least one further substitution at a position corresponding to position 242 or 279 or 275 of SEQ ID NO: 1, in particular one or more combinations of substitutions selected from the group consisting of E188P+S242Y, E188P+S242F, E188P+S242H, E188P+S242W, E188P+S242P, E188P+S242I, E188P+S242T, E188P+S242L, E188P+K279W, E188P+K279Y, E188P+K279F, E188P+K279H, E188P+K279I, E188P+K279L, E188P+K279D, E188P+K279M, E188P+K279S, E188P+K279T E188P+K279N, E188P+K279Q, E188P+K279V, E188P+K279A, E188P+N275F, E188P+N275Y, E188P+N275W, and E188P+N275H, wherein the variant has at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 96%, at least 97%, at least 98%, or at least 99%, but less than 100% sequence identity to a parent alpha amylase selected from the group consisting of: SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, SEQ ID NO: 7, SEQ ID NO: 8, SEQ ID NO: 9, SEQ ID NO: 10, SEQ ID NO: 11, SEQ ID NO: 12, SEQ ID NO: 13, SEQ ID NO: 14, SEQ ID NO: 15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, and SEQ ID NO: 27. The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.

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