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    • 7. 发明公开
    • Novel beta-galactosidases useful for the production of lactose depleted milk products
    • Neue beta-Galactosidasen zur Herstellung von lactoseverarmten Milchprodukten
    • EP2530148A1
    • 2012-12-05
    • EP11004424.5
    • 2011-05-30
    • B.R.A.I.N. Biotechnology Research And Information Network AG
    • Niehaus, FrankEck, Jürgen
    • C12N9/38A23C9/12
    • C12Y302/01023A23C9/1203A23C9/1206A23C9/123A23C13/16A23C19/032A23C19/0328A23C2220/202C12N9/2471
    • The invention relates to a nucleic acid molecule encoding (I) a polypeptide having the activity of a beta-galactosidase (EC 3.2.1.23), which is (a) a nucleic acid molecule encoding a polypeptide comprising or consisting of the amino acid sequence of SEQ ID NO: 1; (b) a nucleic acid molecule comprising or consisting of the nucleotide sequence of SEQ ID NO: 2; (c) a nucleic acid molecule encoding a beta-galactosidase the amino acid sequence of which is at least 64% identical to the amino acid sequence of SEQ ID NO: 1, (d) a nucleic acid molecule comprising or consisting of a nucleotide sequence which is at least 63% identical to the nucleotide sequence of SEQ ID NO: 2, (e) a nucleic acid molecule which is degenerate with respect to the nucleic acid molecule of (d); or (f) a nucleic acid molecule corresponding to the nucleic acid molecule of any one of (a) to (e) wherein T is replaced by U; (II) a fragment of the polypeptide of (I) having the activity of a beta-galactosidase.
    • 本发明涉及编码(I)具有β-半乳糖苷酶活性的多肽的核酸分子(EC 3.2.1.23),其是(a)编码多肽的核酸分子,所述多肽包含或由其组成的氨基酸序列 SEQ ID NO:1; (b)包含SEQ ID NO:2的核苷酸序列或由其组成的核酸分子; (c)编码其氨基酸序列与SEQ ID NO:1的氨基酸序列至少64%相同的β-半乳糖苷酶的核酸分子,(d)包含核苷酸序列或由其组成的核酸分子 其与SEQ ID NO:2的核苷酸序列至少63%相同,(e)相对于(d)的核酸分子简并的核酸分子; 或(f)对应于(a)〜(e)中任一项所述的核酸分子的核酸分子,其中T被U代替; (II)具有β-半乳糖苷酶活性的(I)多肽的片段。