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[求助]
NADH、NADP、NADPH溶液的配制與保存
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| 我在做NAD的特異性,有誰做過這方面的實驗嗎?是否能告訴我NADH、NADP、NADPH溶液怎么配制與保存的?它們的干粉都要在-20度保存,不知它們的溶液是否穩(wěn)定啊。非常需要大家的幫助。 |
金蟲 (著名寫手)
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NADH TRIS buffer pH ~8,能保存一個月以上 NADPH 應(yīng)該跟NADH 差不多 NADP 性質(zhì)應(yīng)該跟NAD+差不多,水溶即可,弱酸性環(huán)境能穩(wěn)定保存一個月以上。 這些輔酶最好不用pbs溶。 溶解后4度保存即可。 |

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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. |
金蟲 (著名寫手)

新蟲 (小有名氣)
鐵蟲 (初入文壇)
送紅花一朵
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