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Clara cell damage and inhibition of pulmonary mixed-function oxidase activity by naphthalene |
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| Authors: | S S Tong Y Hirokata M A Trush E G Mimnaugh E Ginsburg M C Lowe T E Gram |
| Institution: | 1. Department of Physiology & Biophysics University of Illinois, Urbana, IL 61801 USA;2. Department of Botany University of Illinois, Urbana, IL 61801 USA |
| Abstract: | The photosystem II electron acceptor 3,6-dichloro-2,5-dimethoxy-p-benzoquinone DCDMQ] is suggested to replace the second quinone-type two electron acceptor B (or R); the DCDMQ Hill reaction is sensitive to 3-(3,4-dichlorophenyl)-1,1-dimethylurea, but is insensitive to dry heptane extraction of thylakoids and other photosystem II inhibitors. Addition of HCO3? to CO2-depleted thylakoids in silicomolybdate, DCDMQ, diaminodurene and ferricyanide Hill reactions brought about 1,3,10 and 10 fold increase in the electron transport rates; these data confirm that HCO3? affects both Q? to B and B2? to PQ reactions. |
| Keywords: | B (or R) the second quinone-type two-electron acceptor of photosystem II chl chlorophyll DAD (Diaminodurene) 2 3 5 6-tetramethyl-p-phenylene-diamine DBMIB (dibromothymoquinone) 2 5-dibromo-3-methyl-6-isopropyl-p-benzoquinone DCDMQ 3 6-dichloro-2 5-dimethoxy-p-benzoquinone DCMU (diuron) 3-(3 4-dichlorophenyl)-1 1-dimethylurea DNP-INT 2 4-dinitrophenyl ether of 2-iodo-4-nitrothymol FeCy PQ plastoquinone PS II photosystem II Q the first quinone-type one-electron acceptor of photosystem II SiMo TMPD N N N′ N′-tetramethyl-p-phenylenediamine |
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