A Radioactive 1,4-Benzoquinone as Inhibitor of the DBMIB-Type in Photosynthetic Electron Transport
نویسنده
چکیده
An 125iodine labelled 1,4-benzoquinone, an analogue of DBMIB, was studied for its interaction with the photosynthetic system of chloroplasts. It is not covalently bound to the thylakoid mem brane. Instead, chloroplasts slowly decompose it under release of 125iodine and formation of a quinone of only small inhibitory potency, i. e. photosynthetic activity is restored after a few minutes. The inhibition in photosynthetic electron transport caused by the 125iodine labelled 1,4benzoquinone can also be neutralized by bovine serum albumin to which it binds covalently.
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تاریخ انتشار 2013