THE COPPER COMPLEXES OF AMINO-ACIDS, PEPTIDES AND PEPTONES

The Copper Complexes of Amino-acids, Peptides and Peptones

That proteins and their constituents combine with heavy met’als to form “complexes” has been known for some time. Among these copper has received the most attention and considerable work has been done on the copper complexes of amino-acids; t’hey have been isolated,2 analyzed and studied by chemical and physical methods. On the other hand the complexes of peptides and peptones have received onl...

Copper(II) Complexes of Amino Acids and Peptides Containing Chelating bis(imidazolyl) Residues

Copper(II) complexes of amino acids and peptides containing the chelating bis(imidazolyl) residues have been reviewed. The results reveal that bis(imidazolyl) analogues of these biomolecules are very effective ligands for metal binding. The nitrogen donor atoms of the chelating agent are the major metal binding sites under acidic conditions. In the presence of terminal amino group the multident...

Amino Acids, Amines and Peptides of Ram

Epididymal semen was obtained from rams with a fistula present in the vas deferens (Tadmor & Schindler, 1966). It was deproteinized immediately, and the protein-free clear supernatant evaporated to dryness in vacuo at a temperature not exceeding 55\s=deg\C. The residue was taken up with about 10 ml water, and the solution thus obtained used for determination of both amines and amino acids. For ...

Nucleophilicities of amino acids and peptides.

The kinetics of the reactions of amino acids with stabilized diarylcarbenium ions (Ar(2)CH(+)) have been studied photometrically in aqueous solution at variable pH. In the range of 10.5 < pH < 12, the amino acids react much faster than the competing nucleophiles hydroxide and water. Though the pK(aH) values of the amino acids vary by almost four units, the nucleophilic reactivities of all prima...

Complex Salts of Amino Acids and Peptides