The Apparent Acid Ionization Constants of Some O-Phosphorylated Peptides and Related Compounds

The apparent ionization constants of the adenosinephosphates and related compounds.

The central r81e of the adenosinephosphates in biochemical mechanisms depends upon their phospholylation and dephosphorylation reactions (l3). The equilibria of these reactions depend upon pH, and therefore information concerning the various ionization constants is of fundamental importance. With the aid of the various ionization constants it, is possible (a) to calculate the variation in the e...

The titration constants of anserine, carnosine and some related compounds.

the evaluation of language related engagment and task related engagment with the purpose of investigating the effect of metatalk and task typology

abstract while task-based instruction is considered as the most effective way to learn a language in the related literature, it is oversimplified on various grounds. different variables may affect how students are engaged with not only the language but also with the task itself. the present study was conducted to investigate language and task related engagement on the basis of the task typolog...

The Apparent Dissociation Constants of Argi- Nine and of Lysine and the Apparent Heats of Ionization of Certain Amino Acids.*

In this paper the apparent dissociation constants of arginine and of lysine at 25” and the apparent dissociation constants of arginine, lysine, histidine, aspartic acid, and glutamic acid at 0” are reported. We have made use of these data together with previously published data for the apparent dissociation constants of histidine, aspartic acid, and glutamic acid for the purpose of calculating ...

A complete ionization scheme for tyrosine, and the ionization constants of some tyrosine derivatives.

Tyrosine, in strongly acid solution, contains 3 dissociable protons, attached respectively to the carboxyl, the aromatic hydroxyl, and the ammonium group, which we denote for convenience as Groups 1, 2, and 3 respectively, in the following discussion. Since each of the three groups may exist in either of two states (the acidic state, with the proton on, or the basic state with the proton off‘) ...