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Inhibition of oxygen evolution by cacalol and its derivatives

, : Inhibition of oxygen evolution by cacalol and its derivatives. Zeitschrift fuer Naturforschung Section C Journal of Biosciences 46(9-10): 777-780

The inhibition of ATP synthesis, proton uptake and electron transport (basal, phosphorylating and uncoupled) from water to methylviologen indicates that cacalo [9-hydroxy-3,4,5-trimethyl-5,6,7,8-tetrahydro naphtho (2,3-b) furan, a component of root extract of Cacalia decompositae] and its derivatives act as electron transport inhibitors. Since on one hand photosystem I is not affected and electron transport from DPC to QA is mildly affected and on the other hand the electron transport from water to DCIP, and water to silicomolibdate are inhibited, we conclude that the site of inhibition of cacalol is located at the oxygen evolution level. Cacalol derivatives inhibit electron flow between P680 to QA and probably also the QB site.


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Happel, R., 1986: Observations of birds and other frugivores feeding at Tetrorchidium didymostemon. Malimbus, 82: 77-78

Tyler, K.L., 2009: Emerging viral infections of the central nervous system: part 1. In this 2-part review, I will focus on emerging virus infections of the central nervous system (CNS). Part 1 will introduce the basic features of emerging infections, including their definition, epidemiology, and the frequency of CNS involvement....

Stephens, D., 1962: Upward movement of nitrate in a bare soil in Uganda. In a well drained red clay loam, dissolved chloride and nitrate moved upwards during two dry seasons. The extent of the movement was not enough to account for the accumulation of nitrate in the surface soil; most of this nitrate is probably produc...

Gust, R.; Keilitz, R.; Krauser, R.; Schmidt, K.; Schnurr, B., 1999: Structure activity studies on leaving group derivatives of ethylenediamine-platinum. The spatial structures of leaving group derivatives of (meso-1,2-bis(2,6-dichloro-4-hydroxyphenyl)ethylenediamine)platinum(II) (meso-1-PtL2; L2 = SO4, Cl2, I2, CBDC (cyclobutane-1,1-dicarboxylate)) were investigated by NMR methods and correlated w...

Muntyanu, AI., 1990: Ecological features of an overwintering population of the hillock mouse (Mus hortulanus Nordm.) in the south-west of the U.S.S.R. Biological Journal of the Linnean Society, 411-3: 73-82

Walker, P.F., 1977: Welfare of the muscular dystrophy patient. PhysioTherapy 63(2): 56-58

Smith, M.J.H.; Ford-Hutchinson, A.W.; Walker, J.R., 1977: Anti inflammatory activity of bacterial endo toxin. Lipopolysaccharide endotoxins (LPS) from gram-negative bacteria show anti-inflammatory activity. The effects of LPS from Escherichia coli on carrageenan-induced paw edema and in leukocyte accumulation in implanted sponges were studied in the rat....

Lain, K.Y.; Catalano, P.M., 2008: Factors that affect maternal insulin resistance and modify fetal growth and body composition. Fetal growth is multifactorial and can be altered by a variety of extrinsic and intrinsic factors. The maternal, placental, and fetal contribution to growth must all be considered. Of particular interest are maternal metabolic regulation and the a...

Thomas, Y.F.; Compton, W.M., 2008: Rural populations are not protected from drug use and abuse. Journal of Rural Health 23 Suppl: 1-3

Anonymous, 1969: Lupus erythematosus, DNA, and sunshine. JAMA 210(10): 1915-1915