PROTEINACEOUS PROTEASE INHIBITOR AND PROTEIN SOLUTION AND DETERGENT COMPOSITION CONTAINING IT
申请人:Sanyo Chemical Industries, Ltd.
公开号:EP2767547A1
公开(公告)日:2014-08-20
An object of the present invention is to provide proteinaceous protease inhibitors with moderate inhibitory activity. A proteinaceous protease inhibitor of the present invention includes an amino acid sequence (Y) or an amino acid sequence (Y'), the amino acid sequence (Y) being different from the amino acid sequence (A) of a proteinaceous protease inhibitor (BC), represented by SEQ ID NO:1, by one to eight amino acid replacements with amino acids different from replaced amino acids,
the amino acid sequence (Y') having at least 80% homology to the amino acid sequence (Y),
wherein the proteinaceous protease inhibitor satisfies at least one of the following conditions (1) to (8) :
(1) the amino acid residue at a position corresponding to residue 12 of the amino acid sequence (A) in the amino acid sequence (Y) or (Y') is an amino acid (X1) defined below;
(2) the amino acid residue at a position corresponding to residue 38 of the amino acid sequence (A) in the amino acid sequence (Y) or (Y') is an amino acid (X2) defined below;
(3) the amino acid residue at a position corresponding to residue 48 of the amino acid sequence (A) in the amino acid sequence (Y) or (Y') is an amino acid (X3) defined below;
(4) the amino acid residue at a position corresponding to residue 50 of the amino acid sequence (A) in the amino acid sequence (Y) or (Y') is an amino acid (X4) defined below;
(5) the amino acid residue at a position corresponding to residue 51 of the amino acid sequence (A) in the amino acid sequence (Y) or (Y') is an amino acid (X5) defined below;
(6) the amino acid residue at a position corresponding to residue 52 of the amino acid sequence (A) in the amino acid sequence (Y) or (Y') is an amino acid (X6) defined below;
(7) the amino acid residue at a position corresponding to residue 53 of the amino acid sequence (A) in the amino acid sequence (Y) or (Y') is an amino acid (X7) defined below;
(8) the amino acid residue at a position corresponding to residue 70 of the amino acid sequence (A) in the amino acid sequence (Y) or (Y') is an amino acid (X8) defined below:
(X1): any of amino acids (X0) other than Glu
(X2): any of the amino acids (X0) other than Val and Ile
(X3): any of the amino acids (X0) other than Met
(X4): any of the amino acids (X0) other than Tyr
(X5): any of the amino acids (X0) other than Arg
(X6): any of the amino acids (X0) other than Ile
(X7): any of the amino acids (X0) other than Asp
(X8): any of the amino acids (X0) other than Arg; and
(X0): Ala, Arg, Asn, Asp, Cys, Gly, Gln, Glu, His, Ile, Leu, Lys, Met, Phe, Pro, Ser, Thr, Trp, Tyr, or Val.
本发明的目的是提供具有适度抑制活性的蛋白蛋白酶抑制剂。本发明的一种蛋白蛋白酶抑制剂包括一个
氨基酸序列(Y)或一个
氨基酸序列(Y'),该
氨基酸序列(Y)与
SEQ ID NO:1所代表的蛋白蛋白酶抑制剂(BC)的
氨基酸序列(A)不同,有一至八个
氨基酸被替换,被替换的
氨基酸与替换的
氨基酸不同、
氨基酸序列(Y')与
氨基酸序列(Y)具有至少 80%的同源性、
其中蛋白質
蛋白酶抑制劑至少滿足以下條件之一 (1) 至 (8) :
(1)
氨基酸序列(Y)或(Y')中对应于
氨基酸序列(A)残基 12 的位置上的
氨基酸残基是下文定义的
氨基酸(X1);
(2) 与
氨基酸序列(Y)或(Y')中
氨基酸序列(A)的残基 38 相对应位置上的
氨基酸残基是下 文定义的
氨基酸(X2)
(3) 与
氨基酸序列(Y)或(Y')中
氨基酸序列(A)的残基 48 相对应位置上的
氨基酸残基是下 文定义的
氨基酸(X3)
(4) 与
氨基酸序列(Y)或(Y')中
氨基酸序列(A)的残基 50 相对应位置上的
氨基酸残基是下 文定义的
氨基酸(X4)
(5) 与
氨基酸序列(Y)或(Y')中
氨基酸序列(A)的残基 51 相对应位置上的
氨基酸残基是下 文定义的
氨基酸(X5)
(6) 与
氨基酸序列(Y)或(Y')中
氨基酸序列(A)的残基 52 相对应位置上的
氨基酸残基是下 文定义的
氨基酸(X6)
(7) 与
氨基酸序列(Y)或(Y')中
氨基酸序列(A)的残基 53 相对应位置上的
氨基酸残基是下 文定义的
氨基酸(X7)
(8) 与
氨基酸序列(Y)或(Y')中
氨基酸序列(A)的残基 70 相对应位置上的
氨基酸残基是下 文定义的
氨基酸(X8):
(X1):除 Glu 以外的任何
氨基酸 (X0)
(X2):除 Val 和 Ile 以外的任何一种
氨基酸(X0)
(X3):除 Met 以外的任何一种
氨基酸(X0)
(X4):除 Tyr 以外的任何
氨基酸(X0)
(X5):除 Arg 以外的任何
氨基酸(X0)
(X6):除 Ile 以外的任何
氨基酸(X0)
(X7):除 Asp 以外的任何
氨基酸(X0)
(X8):除 Arg 以外的任何一种
氨基酸(X0);以及
(X0):Ala、Arg、Asn、Asp、Cys、Gly、Gln、Glu、His、Ile、Leu、Lys、Met、Phe、Pro、
SEr、Thr、Trp、Tyr 或 Val。