This invention relates to agents and conjugates that can be used to detect and isolate target components from complex mixtures such as proteins and protein fragments from biological samples from in vivo and in vitro sources. Agents comprise a detectable group bound to a photoreactive group. Conjugates comprise agents coupled to substrates by covalent bounds which can be selectively cleaved with the administration of electromagnetic radiation. Targets substances labeled with detectable molecules can be easily identified and separated from a heterologous mixture of substances. Exposure of the conjugate to radiation releases the target in a functional form and completely unaltered. Using photocleavable molecular precursors as the conjugates, label can be incorporated into macromolecules, the nascent macromolecules isolated and the label completely removed. The invention also relates to targets isolated with these conjugates which may be useful as pharmaceutical agents or compositions that can be administered to humans and other mammals.
本发明涉及可以用于检测和分离来自复杂混合物(如来自体内和体外源的
生物样本中的蛋白质和蛋白质片段)的靶组分的试剂和结合物。试剂包括结合到光反应基团的可检测基团。结合物包括通过共价键结合到底物的试剂,这些共价键可以通过电磁辐射的施加而选择性地断裂。标记有可检测分子的目标物质可以很容易地从异源混合物中识别和分离出来。将结合物暴露于辐射会释放出目标物质以功能形式完全不变。使用光解分子前体作为结合物,标记可以被结合到大分子中,新生大分子被分离并标记完全去除。该发明还涉及使用这些结合物分离出的目标物质,这些目标物质可能作为药用剂或可用于给人类和其他哺乳动物的组合物。