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    • 10. 发明授权
    • Soybean raffinose synthase and a method for producing raffinose
    • 大豆棉子糖合成酶和生产棉子糖的方法
    • US07455996B2
    • 2008-11-25
    • US11034848
    • 2005-01-14
    • Chieko OsumiJinshi NozakiTakao Kida
    • Chieko OsumiJinshi NozakiTakao Kida
    • C12P19/18C12N1/20C12N9/10C07H21/04
    • C12N9/1051C12N15/8245C12N15/8246
    • Raffinose is produced by allowing a raffinose synthase having the following properties to act on sucrose and galactinol: (1) action and substrate specificity: produces raffinose from sucrose and galactinol; (2) optimum pH: about 6 to 8; (3) optimum temperature: about 35 to 40° C.; (4) molecular weight: (i) about 75 kDa to 95 kDa estimated by gel filtration chromatography; (ii) about 90 kDa to 100 kDa estimated by polyacrylamide gel electrophoresis (Native PAGE); and (iii) about 90 kDa to 100 kDa estimated by SDS-polyacrylamide gel electrophoresis under a reduced condition (SDS-PAGE); and (5) inhibition: inhibited by iodoacetamide, N-ethylmaleimide, and myo-inositol.
    • 通过使具有以下性质的棉子糖合成酶作用于蔗糖和半乳聚糖来制备棉子糖:(1)作用和底物特异性:从蔗糖和肌醇半乳糖苷产生棉子糖; (2)最适pH:约6〜8; (3)最适温度:约35〜40℃。 (4)分子量:(i)通过凝胶过滤色谱法估计约75kDa至95kDa; (ii)通过聚丙烯酰胺凝胶电泳(Native PAGE)估计约90kDa至100kDa; 和(iii)在还原条件(SDS-PAGE)下通过SDS-聚丙烯酰胺凝胶电泳估计约90kDa至100kDa; 和(5)抑制:被碘乙酰胺,N-乙基马来酰亚胺和肌醇肌醇抑制。