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In previous work, we demonstrated linkage between a broad region on New Zealand Black (NZB) chromosome 1 and increased costimulatory molecule expression on B cells and autoantibody production. In this study, we produced C57BL/6 congenic mice with homozygous NZB chromosome 1 intervals of differing lengths. We show that both B6.NZBc1(35-106) (numbers denote chromosomal interval length) and B6.NZB...

Prion diseases are infectious neurodegenerative disorders characterized by the conversion of the cellular prion protein (PrPc) to the misfolded isoform (PrPsc). Prion peptide PrP 106-126 [PrP (106-126)] shares many physiological properties with PrPsc; it is neurotoxic in vitro and in vivo. PrP (106-126) induces neurotoxicity by the overexpression of PrPc and activation of the mitogen-activated ...

Multiple light-induced reversible metastable NO linkage isomers (PLIs) have been detected in the dinitrosyl compound [RuCl(NO)2(PPh3)2]BF4 by a combination of photocrystallographic and IR analysis. The IR signature of three PLI states has been clearly identified, with estimated populations of 59% (PLI-1), 8% (PLI-2) and 5% (PLI-3) for a total population of the metastable state of 72%. The struc...

The soil special features as a sorbent, its complicated composition and the differences in its characteristics impose the necessity of a research on the uptake of certain radio-isotopes by the plants, cultivated on the most typical soil types of Bulgaria. Carrying this goal a series of cultivation vegetative experiments on fi ve different soil types, with wheat, bean, spinage, turnip and alfalf...

rac-Bis[{(diphenylphosphino)ethyl}-phenylphosphino]methane (DPPEPM) reacts with iron(II) and ruthenium(II) halides to generate complexes with folded DPPEPM coordination. The paramagnetic, five-coordinate Fe(DPPEPM)Cl(2) (1) in CD(2)Cl(2) features a tridentate binding mode as established by (31)P{(1)H} NMR spectroscopy. Crystal structure analysis of the analogous bromo complex, Fe(DPPEPM)Br(2) (...

The structure of five-coordinate Ru(II) complexes RuHCl(CO)(PPr3)2, 1, RuCl2(CO)(PPr3)2, 2, and Ru(Ph)Cl(CO)(PBu2Me)2, 12, are reported. All three of these complexes have square-based pyramid geometry with the strongest σ-donor ligand trans to the vacant site. These 16-electron complexes do not show bona fide agostic interactions. This is attributed to the strong trans influence ligand (H, CO, ...

The state-of-the-art in olefin metathesis is application of N-heterocyclic carbene (NHC)-containing ruthenium alkylidenes for the formation of internal C=C bonds and of cyclic alkyl amino carbene (CAAC)-containing ruthenium benzylidenes in the production of terminal olefins. A straightforward synthesis of bis(CAAC)Ru indenylidene complexes, which are highly effective in the formation of both te...