Showing papers in "Journal of Biological Chemistry in 1947"

TL;DR: The coupling of diazotized aryl amines with proteins in alkaline solution yield chromophoric protein derivatives that are soluble in trichloroacetic acid and serve as the basis for the method here described.

TL;DR: A simple and rapid spectrophotometric method by which the rates of phosphorylation by the enzymes hexokinase and phosphohexokinase can be measured is reported.

TL;DR: A new method based on a difference in the rate at which these compounds release their phosphorus in weak acid is described, which may be applied not only to the free ribose phosphates, but also to related compounds which possess them.

TL;DR: Primary consideration is given to data indicating that antitryptic activity is a characteristic of “native” ovomucoid, and a component of egg white that inhibits trypsin containing no enterokinase is concerned.

TL;DR: Among artificially produced biochemical mutants of Neurospora, those which have lost the ability to synthesize methionine form the largest class, and some of the mutants require organically bound sulfur for growth, an indication that in these strains the block in methamphetamineionine synthesis comes at a later stage than sulfate reduction.

TL;DR: The experiments here reported have been designed to investigate the transplacental migration of certain body constituents, the fetal synthesis of certain constituents, and the con- the isot,opic tracer technique seems to be well adapted to the study of some of these problems.

TL;DR: It was conclusively proved by Bloch, Schoenheimer, and Rittenberg by isotope tracer evidence that creatinine was the only normal urinary constituent containing any significant amount of body creatine nitrogen.