The Journal of Biological Chemiitry
نویسندگان
چکیده
y-Cyano-cr-L-aminobutyric acid is identified for the first time as a biological substance. This amino acid nitrile accumulates when inorganic cyanide is administered to young cultures of Chromobacferium violaceum strain D 341. Cyanide supplies the cyano group, and aspartic acid supplies carbon atoms 1 to 4. Biosynthesis of P-cyanoalanine also takes place and appears to be controlled by aspartic acid. No evidence has been obtained for appreciable metabolism of y-cyano-cr-aminobutyric acid. Identification has been based on a close comparison of the physical and chemical properties of the isolated crystalline substance with known synthetic y-cyano-or-L-aminobutyric acid. The latter has been prepared by an improved procedure involving hydrogenolysis of the benzyloxycarbonyl derivative.
منابع مشابه
Effect of Chemical and Biological Phosphorus on the Yield of Summer Savory (Satureja hortensis L.)
To survey the effects of chemical and biological phosphorus on the yield and essential oil of Satureja hortensis L. as an important medicinal plant, factorial experiment was conducted based on randomized complete block design with three replicates at Research Station of Faculty of Agriculture, Urmia University in 2011. The treatments were chemical phosphorus fertilizer with four levels (0, 50, ...
متن کاملThe Effective Factors on the Adoption of Biological Control in Farmers' Field School by Rice Producers: The Case of Babol Township
The main purpose of this research is to determine the effective factors in adopting biological control in the Farmer Field School approach. The method used in this research is descriptive-correlation and comparative, which has been done by survey. The rice farmers of the township of Babol, Mazandaran, Iran were selected as the sample population of this research. The statistical sample of the re...
متن کاملSensitivity Analysis of the Critical Conditions of AFM-Based Biomanipulation of Cylindrical Biological Particles in Various Biological Mediums by Means of the Sobol Method
The sensitivity analysis of atomic force microscope (AFM) based manipulation of gold spherical nanoparticles in air medium has been carried out in previous research works. In the AFM-based manipulations conducted in various biological liquid mediums, the new environmental parameters associated with these biological fluids also affect the dynamics of the manipulation process. Therefore in this r...
متن کاملThe Study of Variation of Photon Intensity Inside Biological Phantom by Green Theorem
The Image reconstruction is an important problem in optical tomography. The process of the image processing requires the study of photon migration in biological tissue. There are several approaches to study and simulate propagation of photons in biological tissues. These approaches are categorized into stochastic and analytical groups. The Monte Carlo method as a stochastic method is widely use...
متن کامل