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Effect of hypothermy on protein phosphorylation in plants

100%

Karimova F. G. , Abubakirov M. R. , Tarchevsky I. A. , Pahlich E. , Khokhlova L. P.

tom 34

Recent developments in immune activation by uric acid crystals

80%

Ng G. , Chau E. M. T. , Shi Y.

tom 58

nr 4

273-277

Assessment of mechanisms involved in regulation of the primate corpus luteum

80%

Ottobre J. S. , Ciereszko R. E. , Houmard B. S.

Journal of Physiology and Pharmacology. Supplement

1996

tom 47

nr 1

Modulation of plant nuclear matrix nucleolytic activity and specificity may result from interaction of nuclease-protein 14-3-3 complex with inner nuclear membrane lipids

80%

Lubocka J. , Kozubek A.

tom 03

nr 1

Plant cell nuclear matrix depleted in lipids exhibited approximately 50% lower endonucleolytic activity attributed to 32 kDa nuclease. Supplementation of delipidated matrix with phospholipids, sterols and glycolipids resulted in the recovery of nuclease activity. The extent of recovery is dependent upon the type of lipid used for reconstitution. The most effective (over 97%) in recovery of the nucleolytic activity were PC, PE, DGDG and stigmasterol. Some recovery is also observed when other natural amphiphilic molecules are studied (resorcinolic lipids). Recombinant plant protein 14-3-3 showed ability for direct interaction with lipid monolayers. The interaction was confirmed by analysis of the monolayer collected from the subphase after incubation with protein 14-3-3. Deletion of the 12 kDa N-terminal fragment of the protein 14-3-3 abolished its ability for binding to lipid monolayer. The results suggest that in vivo direct interaction of protein 14-3-3 with nuclear envelope lipids may participate in modulation of the nuclease 32 kDa activity. A postulated model of the interactions is discussed.

Psoralen photosensitization: damages to nucleic acid and membrane lipids components

80%

Caffieri S. , Zarebska Z. , Dall'Acqua F.

nr 1

For decades the therapeutic properties of psoralens were related to their photochemical reactions with DNA and RNA. Such approach, although fruitful in treatments, did not explain satisfactorily the way of healing of the multitude of diseases manifested through skin disorders. The new research field presented in our review is directed to another target: the lipid components of the cell. The studies on the photobiology of phospholipids may help to elucidate the phototoxic and pigment inducing activity of psoralens.