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         Ã¸·´Ó¦Òº£ºReaction mixtures[containing 0.2 mM 5,5¡ä-dithiobis (2-nitrobenzoic acid)] (DTNB),100 ¦ÌM PLP, 4 mM substrate, CFEs (approximately 30 ¦Ìg protein)in 100 mM potassium phosphate (pH 7.5) solution]Ҳû˵·´Ó¦ÒºÌå»ý¡£ÄÇÎÒÓ¦¸Ã°´¶àÉÙÅä°¡£¿£¨Èç¹ûÎÒÌå»ýÉÙÁË£¬Ã¸´ÖÌáȡҺ30΢¿Ë£¬Äǵ×Îï²»¾Í²»¹»ÁËÂ𣿻áÓ°ÏìøµÄ»îÐÔ°É£©
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Breaking Buffer 50 mM sodium phosphate, pH 7.4
1 mM PMSF (phenylmethylsulfonyl fluoride or other protease inhibitors)
1 mM EDTA
5% glycerol
1. Prepare a stock solution of your desired protease inhibitors and store
appropriately. Follow manufacturer's recommendations.
2. For 1 liter, dissolve in 900 ml deionized water:
6 g sodium phosphate (monobasic), 372 mg EDTA, and 50 ml glycerol
3. Use NaOH to adjust pH and bring up the volume to 1 liter. Store at 4¡ãC.
4. Right before use, add the protease inhibitors.
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