The hormone abscisic acid regulates development and survival of plants in response to environmental stresses. now demonstrate that in response to stress, abscisic acid can be made available via polymerization of a beta-glucosidase enzyme. This enzyme is reported to hydrolyze glucose-conjugated abscisic acid, thus increasing active abscisic acid concentrations.

Previous results indicate extensive similarity of the active site regions of thrombin (EC 3.4.21.5) and Thrombin Quick, a congenital dysthrombin. A binding defect of Thrombin Quick toward fibrinogen is indicated by an increased KI when fibrinogen is present as a competitive inhibitor in the hydrolysis of tosyl-Gly-Pro-Arg-p-nitroanilide. In the present study, Thrombin Quick I is shown to have a...

We have considered the Huxley-Simmons manoeuvre. On the assumption that the quick release is an elastic process and on the basis of the isometric tension and of the stiffness of the muscle fibre we calculated that the spontaneous release of the fibre requires approximately 43 micros, which is much faster than the observed release, approximately 180 micros. We concluded that the observed quick r...

the purpose of the present study was to develop glipizide controlled release nanoparticles using alginate and chitosan thorough ionotropic controlled gelation method. glipizide is a frequently prescribed second generation sulfonylurea which lowers the blood glucose in type-two diabetics. quick absorption of the drug from the gastrointestinal tract along with short half- life of elimination make...

The active state describes the force developed in a muscle when the contractile elements are neither lengthening nor shortening. Recently it was suggested that perturbations used to measure the active state also alter the time-course of the active state. The present research was undertaken to assess quantitatively the effect of two such perturbations, isotonic shortening and quick release, on t...

The series elasticity (SE) of cat papillary muscle was measured in 6 muscles by the isotonic quick-release method, with careful correction for the compliance of the equipment. The resultant SE curve was exponential in form with an extension of 4% to 5% of initial muscle length for a preload of 0.5 g and a developed tension of 10 g; this demonstrates a stiffer SE for cardiac muscle than has prev...

The series elasticity (SE) of cat papillary muscle was measured in 6 muscles by the isotonic quick-release method, with careful correction for the compliance of the equipment. The resultant SE curve was exponential in form with an extension of 4% to 5% of initial muscle length for a preload of 0.5 g and a developed tension of 10 g; this demonstrates a stiffer SE for cardiac muscle than has prev...