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    • 7. 发明授权
    • Subtilisin variants
    • 枯草杆菌蛋白酶变体
    • US07250281B2
    • 2007-07-31
    • US10323324
    • 2002-12-18
    • Thomas P. GraycarRichard R. BottLori J. Wilson
    • Thomas P. GraycarRichard R. BottLori J. Wilson
    • C12N9/56C12N15/57C12D15/74C11D3/386
    • C11D3/38609C12N9/54
    • Novel carbonyl hydrolase variants derived from the DNA sequences of naturally-occurring or recombinant non-human carbonyl hydrolases are disclosed. The variant carbonyl hydrolases, in general, are obtained by in vitro modification of a precursor DNA sequence encoding the naturally-occurring or recombinant carbonyl hydrolase to generate the substitution of a plurality of amino acid residues in the amino acid sequence of a precursor carbonyl hydrolase. Such variant carbonyl hydrolases have properties which are different from those of the precursor hydrolase, such as altered proteolytic activity, altered stability, etc. The substituted amino acid residues correspond to positions +76 in combination with one or more of the following residues +99, +101, +103, +104, +107, +123, +27, +105, +109, +126, +128, +135, +156, +166, +195, +197, +204, +206, +210, +216, +217, +218, +222, +260, +265 and/or +274 in Bacillus amyloliquefaciens subtilisin.
    • 公开了衍生自天然存在或重组非人羰基水解酶的DNA序列的新型羰基水解酶变体。 变体羰基水解酶通常通过体外修饰编码天然存在或重组羰基水解酶的前体DNA序列获得,以产生前体羰基水解酶的氨基酸序列中的多个氨基酸残基的取代。 这种变体羰基水解酶具有与前体水解酶不同的性质,例如改变的蛋白水解活性,改变的稳定性等。取代的氨基酸残基对应于与一个或多个以下残基组合的位置+76, +101,+103,+104,+107,+123,+27,+105,+ 109,+126,+128,+135,+ 156,+166,+ 195,+ 197,+ 204,+ 206 ,+210,+ 216,+ 217,+ 218,+ 222,+ 260,+ 265和/或+ 274的解淀粉芽孢杆菌枯草杆菌蛋白酶。