We extend the Coleman-Hill analysis to non-Abelian Chern-Simons theories containing a tree level topological mass term. We show, in the case of a pure Yang-Mills-Chern-Simons theory, that there are no corrections to the coefficient of the Chern-Simons term beyond one loop in the axial gauge. Our arguments use constraints coming only from small gauge Ward identities as well as the analyticity of...

Coupling factor, isolated from lettuce chloroplasts, contained several binding sites for Mn2+ ions. Three of these sites showed strong cooperative interactions having a Hill coefficient of 2.9 +/- 0.20 and a Kd of 14.7 +/- 0.44 microM. Three additional non-interacting Mn2+-binding sites were found with a Kd of 46.7 +/- 2.3 microM. Chemical modification with naphthylglyoxal of 1 arginyl residue/...

A thermokinetic model of hydrogen diffusion across a metallic tube is established. It includes the enthalpy change of the metal– hydrogen reaction, heat losses, dependences of reaction rate and hydrogen diffusion coefficient on temperature, and self-stress effects, etc. A phenomenon, the super fast diffusion of hydrogen before the up-hill diffusion and Fickian diffusion during hydrogen gas char...

The regulation of diethylaminoethyl-partially purified invertase (EC 3.2.1.26; beta-D-fructofuranoside fructohydrolase) from the 37,000 X g-soluble intracellular fluid of Actinomyces viscosus serotype 2 strain M-100 was studied. Glycolytic intermediates, mono-, di-, and triphosphate nucleotides, inorganic phosphate, and various divalent cations were tested for regulatory effects. Fructose-6-pho...

Vascular smooth muscle of the frog was skinned by 0.2 mg/ml saponin for 20 mm. The skinned preparations activated by Ca2+, at 2 mmol/l Mg2+ and MgATP2-, gave half maximal force at Ca2+ = (1.32 +/- 0.07) x 10(-6) mol/l and maximal force at Ca2+ = 3.16 x 10(-5) mol/l (35 +/- 4% of the maximal contraction induced by KCl in living smooth muscles). The Hill coefficient was 1.51 +/- 0.11. Thus, the s...

Glyceraldehyde-3-phosphate dehydrogenase is a glycolytic enzyme that catalyses conversion of glyceraldehyde-3-phosphate to 1,3-diphosphoglycerate. ATP has been found to have an inhibitory effect on this enzyme. To establish the interaction between the enzyme and ATP, a fluorescence technique was used. Fluorescence quenching in the presence of ATP suggests cooperative binding of ATP to the enzym...

Multisite phosphorylation is a common form of posttranslational protein regulation which has been used to increase the switchlike behavior of the protein response to increasing kinase concentrations. In this letter, we show that the switchlike response of multisite phosphoproteins is strongly enhanced by nonessential phosphorylation sites, a mechanism that is robust to parameter changes and eas...

The modulatory effect of amiloride on glycine-activated current (I(Gly)) was investigated in acutely dissociated rat spinal dorsal horn neurons using the whole-cell patch clamp technique. Amiloride inhibited I(Gly) reversibly in a concentration-dependent manner. It shifted the concentration-response relationship to the right without altering the maximum response and Hill coefficient of the I(Gl...

Concentrations of DL-glyceraldehyde between 5 and 20 mM reduce the sickling of S/S erythrocytes even in the complete absence of oxygen; at 10 mM glyceraldehyde the increase in the number of normal cells ranges from 20 to 40%. The inhibition of sickling was both concentration- and time-dependent and was not reversed by repeated washings with buffer. Incubation of erythrocytes with increasing con...

Hill-type models are commonly used to estimate muscle forces during human and animal movement-yet the accuracy of the forces estimated during walking, running, and other tasks remains largely unknown. Further, most Hill-type models assume a single contractile element, despite evidence that faster and slower motor units, which have different activation-deactivation dynamics, may be independently...