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ÇóÎÊÈçºÎÅäÖÆº¬4.5M MgCl2µÄPBSºÍº¬0.5M NaClµÄPBS
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¸Õ²ÅÔÚÎÄÏ×Öп´µ½Á½ÖÖPBS£¬PBS containing 0.5 M NaCl ºÍPBS containing 4.5 M MgCl2£¬Çë½Ì¸÷λӦ¸ÃÈçºÎÅäÖÆÕâÁ½ÖÖPBS£¬Ð»Ð»¡£ ÔÎÄ·îÉÏ£º For purification of Stx2e, cell extract from 1 L of culture was applied onto a 2-ml volume of D-galactose gel or TAR column equilibrated with PBS containing 0.5 M NaCl. After washing the column, bound protein was eluted with PBS containing 4.5 M MgCl2, and 2 ml of each fraction was collected. The eluent was pooled and dialyzed against PBS overnight, and the precipitated products were removed by centrifugation. |
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