青蛙光感受器膜的表征与分析。
Characterization and analysis of frog photoreceptor membranes.
作者信息
Bownds D, Gordon-Walker A, Gaide-Huguenin A C, Robinson W
出版信息
J Gen Physiol. 1971 Sep;58(3):225-37. doi: 10.1085/jgp.58.3.225.
Abstract
Frog photoreceptor membranes contain 54,000 g of protein per mole of visual pigment chromophore, virtually all of it insoluble membrane protein. Acrylamide gel electrophoresis indicates one major polypeptide class, most likely the visual pigment apoprotein. Suspensions of these photoreceptor membranes accumulate calcium ions when ATP is present, a characteristic that may play a part in visual excitation.
摘要
蛙类光感受器膜每摩尔视觉色素发色团含有54,000克蛋白质，几乎全部都是不溶性膜蛋白。丙烯酰胺凝胶电泳显示有一类主要的多肽，很可能是视觉色素脱辅基蛋白。当存在三磷酸腺苷（ATP）时，这些光感受器膜的悬浮液会积累钙离子，这一特性可能在视觉兴奋中起作用。
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