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B Zerner

Publications and source records attributed to B Zerner.

At least 55 records · Page 3Linked to original sources
PubMed1975

Carboxylesterases (EC 3.1.1). Amino acid composition of liver carboxylesterases.

The amino acid compositions of the carboxylesterases from chicken, ,orse, ox, sheep, and pig livers are reported and compared. As would be expected for this homologous series, the compositions show a general similarity. However, there are some significant differences, but the degree to which particular pairs of enzymes differ is consistent with the evolutionary history of the species from which they were isolated.

Amino Acids↗
PubMed1975

Carboxylesterases (EC 3.1.1). A comparison of some kinetic properties of horse, sheep, chicken, pig, and ox liver carboxylesterases.

A comparative study of the kinetic be,avior of horse, sheep, chicken, pig, and ox liver carboxylesterases is reported. The enzymes exhibit similar specificites towards a series of phenyl esters in which the acyl group is varied, and towards a series of butyrate esters in which the alcohol group is varied. Non-Michaelis-Menten kinetics are exhibited by the horse enzyme in the hydrolysis of methyl and ethyl butyrates, and by the pig enzyme with ethyl butyrate. Each enzyme exhibits inhibition by one or more substrates. A simple scheme which accounts for both activation and inhibition is discussed. pH-k(cat) profiles for the horse and chicken liver carboxylesterase-catalyzed hydrolyses of phenyl butyrate demonstrate dependencies on pK(a)S of 4.75 and 5.0, respectively.

Animals↗