Studies on the Antimetabolites of Amino Acids. VII

The Influence of Amino Acids and Antimetabolites on Glycine Retention by Ehrlich Ascites Carcinoma Cells

The transport of biologically important substances across cell membranes has been studied in a wide variety of systems. For example, transport of ions into and out of cells has long formed an integral part of studies in physiology (8), and it has been known since 1913 from the studies of Van Slyke and Meyer (20) that amino acids given to an animal appear in the tissues at concentrations which a...

A Review on Recent Findings on Amino Acids Requirements in Poult-Studies

Amino acids (AA) are important in poultry nutrition not only for protein deposition, but also for other metabolic functions; such as improving immune and gut functions. Although, some table values are available on amino acids requirement, AA requirements may vary due to changes in dietary composition and breeding selection. Thus amino acids requirements have remained an ongoing research topic. ...

Studies on the crystalline lens. X. Transport of amino acids.

A study has been made of the accumulation of the amino acid C">-laheled alpha amino isobutyric acid (a-AIB) in rabbit lenses cultured under varying conditions. In a medium containing no other amino acids, this compound accumulates at approxivwtely a linear rate for the maximum period studied (48 hours), at which time the ratio of concentration in lens water to concentration present initially in...

Further Studies on the Bromodecarboxylation Amino Acids with IV-Bromosuccinimide

In a previous publication from this laboratory, a method was described for the quantitative bromodecarboxylation of amino acids, proteins, and peptides (1). A review of decarboxylating compounds and of the theories pertinent to their mode of action has been presented by Schijnberg and Moubacher (2). The reaction of N-bromosuccinimide with various compounds in organic solvents has received consi...

Studies on the unknown amino acids in normal human urine.