THE DISTRIBUTION OF FIXED CARBON IN AMINO ACIDS

The distribution of fixed carbon in amino acids.

Experiments previously reported from this laboratory (1) were designed to measure the normal amount of COz carbon which becomes incorporated into the amino acids of the tissues of rats fed a natural diet. This evaluation was made possible by exposing rats to CY402 for periods long enough to insure a complete exchange of isotope between CO2 and the organic constituents of several tissues. It was...

The Carbon Isotopic Distribution of Murchison Amino Acids

The origin of amino acids in meteorites is not yet well understood, in spite of extensive molecular, isotopic, and chiral analyses of the last thirty years that have elucidated many of these compounds' features and distribution. The present general view of meteoritic amino acid formation is that of an interstellar/planetary sequence of Strecker-like reactions between aldehydes/ketones, HCN, wat...

Amino acids interacting with defected carbon nanotubes: ab initio calculations

The adsorption of a number of amino acids on a defected single-walled carbon nanotube (SWCNT) isinvestigated by using the density-functional theory (DFT) calculations. The adsorption energies andequilibrium distances are calculated for various configurations such as amino acid attaching to defectsites heptagon, pentagon and hexagon in defective tube and also for several molecular orientationswi...

Application of the Freundlich Langmuir Temkin and Harkins-Jura adsorption isotherms for some amino acids and amino acids complexation with manganese kn(ll) on carbon nanolube

In lb is research, adsorption of some amino acids and their complenation with manganese (II) ion on carbonnanotube (MWCNT) by using of four relations Langmuir, Freundlich. Temkin and Harkins -Jura imitherms wasinvestigated. From this relations. Freudlich and Temkin relations predict good equilibrium diagram in, isothermcondition. we could compute the theoretical constants by excel software. Hy ...

Distribution of Amino Acids in Lunar Regolith