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ÂÛÎÄÖвⶨ¹Ì¶¨»¯ºóKm±ä´ó£¬ÎÒÓù¹ÏóµÄ²»Êʸıä¼ÓÒÔ½âÊÍ¡£¶øVmaxµÄ±ä´ó£¬ÎÒÓÃÁ˸»¼¯Ð§Ó¦¼°¼õÉÙÄÚÀ©É¢À´½âÊÍ¡£µ«Éó¸åÈ˵ÄÒâ¼ûÊÇÁ½¸ö½á¹ûÓ¦¸ÃͳһÓù¹Ïó¸Ä±äÀ´½âÊÍ¡£ÒÔÏÂÊÇÉó¸åÈËÔ­»°£ºThe increased KM and Vmax should be explained in common bases, very likely due to changes in the conformation of the enzyme after immobilization (Rodrigues and Secundo review above study this). Current explanations seem no very likely, why the enzyme activity increase (bit not the Km decerase) using small volume?? Substrate concentration on the support could explain some effect, but the dissimilar effect on Km and V,ax suggest just a conformation change, and very likely, some diffusion limitations, May be interesting repeat the experiment using lower enzyme loading to check if the apparent Km decreased.
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2Â¥: Originally posted by newslx at 2016-08-26 10:56:57
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http://pubs.rsc.org/is/content/articlehtml/2013/cs/c3cs35495d

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