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[求助]
NADH還原型輔酶I在什么Buffer中保存穩(wěn)定?
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我是學(xué)化學(xué)的,對生物不是很了解,最近在查閱NADH還原型輔酶I的保存Buffer的資料,看到以前的帖子有說用tris buffer PH~8的,帖子里也貼有文獻(xiàn), 但是只是沒有文獻(xiàn)出處,想請教各位生物高手,能否告知這篇文獻(xiàn)的出處,或者發(fā)給我這篇文獻(xiàn)? 另外只說了可用tris buffer PH~8,那么buffer濃度是多少呢?配制酶的濃度又是多少呢,還是酶的濃度是根據(jù)要測定的東西來定,比如我們要測定ALT,AST的, 那么NADH的濃度應(yīng)該是多少呢?希望各位多多指點,萬分感謝! 文獻(xiàn)內(nèi)容如下: Colowick, Kaplan, and Ciotti (4) observed that the rate of hydrolysis of the nicotinamide-ribose linkage of NAD at 100” increases with increasing pH above pH 6.0. The rates of hy- drolysis obtained in various buffers at pH 7.5 were found to de- pend on the type of buffer used. Tris and acetate buffers did not increase the rate of hydrolysis above that observed with un- buffered NAD at this pH, whereas phosphate and citrate buffers enhanced it 3- to 4-fold. It was noted (1) that Tris could almost completely abolish this stimulatory effect of phosphate and citrate buffers |
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