Bicarbonate assay and phosphoenolpyruvate carboxylase enzyme from
hyphomicrobium
    2.
    发明授权
    Bicarbonate assay and phosphoenolpyruvate carboxylase enzyme from hyphomicrobium 失效
    碳酸氢盐测定和磷酸烯醇丙酮酸羧化酶从hyphomicrobium

    公开(公告)号:US5514538A

    公开(公告)日:1996-05-07

    申请号:US40273

    申请日:1993-03-30

    摘要: Phosphoenolpyruvate carboxylase (PEPC) characterized by a specific activity of at least 40 units/mg; and/or by no more than 50% loss of activity after 60 days in 167 mM Tricine/HCl buffer, pH 8.0, and 15 mM MgCl.sub.2 ; and/or, at pH 6.5, an activity of at least 40% relative to the activity at optimum pH is disclosed. Such enzymatic activity can be obtained from serine pathway methylotrophs such as Hyphomicorbium, and is very suitable for use in measuring bicarbonate in biological samples.

    摘要翻译: 磷酸烯醇丙酮酸羧化酶(PEPC)的特征为比活性至少为40单位/ mg; 和/或在167mM Tricine / HCl缓冲液,pH8.0和15mM MgCl 2中60天后不超过50%的活性损失; 和/或在pH6.5时,公开了相对于最佳pH下活性至少40%的活性。 这样的酶活性可以从丝氨酸途径甲基营养菌如Hyphomicorbium获得,并且非常适合用于测量生物样品中的碳酸氢盐。