Recent research has shown that rat surfactant apoproteins (26-38 kDa) are vitamin K-dependent [Rannels, Gallaher, Wallin & Rannels (1987) Proc. Natl. Acad. Sci. U.S.A. 84, 5952-5956]. We have investigated the effect of the vitamin K antagonist warfarin on this family of apoproteins in surfactant from dog lung. Our data suggest that warfarin does not interfere with synthesis and secretion of the...

hydrogenase, thus blocking the biosynthesis of threonine, isoleucine and methionine2). Because these are essential dietary amino acids in animals, HONis potentially useful as a nontoxic antimicrobial drug. In addition, it may have value as a chiral starting material for the synthesis of more complex pharmaceutical agents. Analyses of HONenriched from isotopically labelled precursors have shown ...

Ethanol has been used as a renewable hydrogen-donor in the conversion of lignin model molecule subcritical conditions. Noble metal-free porous mixed oxides, obtained by activation Cu−Ni−Al and Cu−Ni−Fe layered double hydroxide (LDH) precursors, have heterogeneous catalysts for Meerwein-Ponndorf-Verley (MPV) hydrogen transfer further hydrogenation ethanol dehydrogenation products. Both Cu/(Cu+Ni...

A NUMBER of biochemical and autoradiographic studies have been made on the distribution and movement of labelled substances within the neuron. Proteins labelled after in duo administration of radioactive precursors have been shown to be conveyed from the original site of synthesis down the nerve fibres at an average daily rate of a few millimetres (GRAFSTEIN, 1967; LASEK, 1968; TAYLOR and WEISS...

Levels of radioactive glycine and glycerol incorporated into the plasma membrane of Acanthamoeba castellanii during phagocytosis were determined in order to elucidate how surface membrane expended during this process is replaced. The amoebae were allowed to ingest latex beads in the presence of the labelled membrane precursors and plasma membrane was then isolated and analysed for the presence ...

let g be a (p, q) graph. let k be an integer with 2 ≤ k ≤ p and f from v (g) to the set {1, 2, . . . , k} be a map. for each edge uv, assign the label |f(u) − f(v)|. the function f is called a k-difference cordial labeling of g if |νf (i) − vf (j)| ≤ 1 and |ef (0) − ef (1)| ≤ 1 where vf (x) denotes the number of vertices labelled with x (x ∈ {1, 2 . . . , k}), ef (1) and ef (0) respectively den...

1-Methyl-3-(2-oxyethyl)-1H-Imidazol-3-ium-Borate Sulfonic Acid ([MOEI]-BSA) was easily prepared and used as a new and highly efficient solid acid catalyst for the synthesis of benzimidazole derivatives with high isolated yields. Various substituted benzimidazoles were synthesized by a combination of o-phenylenediamines and aldehydes in the presence of [MOEI]-BSA with excellent yields in water a...