Graeme F. Bryce
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View article: Studies on the Enzymes Involved in the Biosynthesis of Cyclo-Tris ( <i>N</i> -2,3-Dihydroxybenzoyl- <scp>l</scp> -Seryl) in <i>Escherichia coli</i> : Kinetic Properties of the <scp>l</scp> -Serine–Activating Enzyme
Studies on the Enzymes Involved in the Biosynthesis of Cyclo-Tris ( <i>N</i> -2,3-Dihydroxybenzoyl- <span>l</span> -Seryl) in <i>Escherichia coli</i> : Kinetic Properties of the <span>l</span> -Serine–Activating Enzyme Open
Some kinetic properties of the formation of a thioester-bound l -seryl-enzyme intermediate are described. The rate constant of formation is 3.12 × 10 2 M −1 s −1 and the rate constant for spontaneous breakdown is 2.47 × 10 −3 s −1 . These …
View article: Reversible Disruption by Cupric Ions of a Helical Conformation of a Polypeptide Derived from Ribonuclease
Reversible Disruption by Cupric Ions of a Helical Conformation of a Polypeptide Derived from Ribonuclease Open
The tryptic peptide comprising Residues 38 to 61 of oxidized bovine pancreatic ribonuclease A was isolated and shown to be convertible in part to a helical conformation in 2-chloroethanol- or 2,2,2-trifluoroethanol-water mixtures. The char…
View article: Optical Rotatory Dispersion and Circular Dichroism Spectra of Copper(II)- and Nickel(II)-Peptide Complexes
Optical Rotatory Dispersion and Circular Dichroism Spectra of Copper(II)- and Nickel(II)-Peptide Complexes Open
Formation and ionization constants have been computed for the 1:1 copper(II) complexes of glycylglycyl-l-alanine, glycyl-l-alanylglycine, l-alanylglycylglycine, and di-l-alanyl-l-alanine. The values reported are similar to those obtained f…
View article: l-Histidine-containing Peptides as Models for the Interaction of Copper (II) and Nickel (II) Ions with Sperm Whale Apomyoglobin
l-Histidine-containing Peptides as Models for the Interaction of Copper (II) and Nickel (II) Ions with Sperm Whale Apomyoglobin Open
1. The association and ionization constants for nickel (II) and a selection of l-histidine-containing peptides have been computed together with the constants for copper (II) and acetylglycylglycyl-l-histidylglycine. 2. A close parallel bet…
View article: Visible Spectra and Optical Rotatory Properties of Cupric Ion Complexes of l-Histidine-containing Peptides
Visible Spectra and Optical Rotatory Properties of Cupric Ion Complexes of l-Histidine-containing Peptides Open
The visible absorption spectra and optical rotatory dispersion spectra of l-histidine-containing peptides and copper(II) have been investigated. A knowledge of the equilibrium constants involved has enabled the spectra to be resolved into …