描述:AET is a radioionatable, cleavable, photoactivable cross linking agent. The maximum length of the linker arm between Ca of the amino acid of interest and the photoreactive atom is 14A. The AET absorbance maxima are: _x000B_ l max = 273nm; e= 2.6 x 104 ; l max = 330nm; e= 9.5 x 103