Journal ArticleDOI
Une nouvelle méthode de synthèse peptidique
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TLDR
In this article, a solution contenant des anhydrides mixtes de la forme: ======@@@@@@@@@@@@@@@@¯¯¯¯@@@@@@@@@@@@@@@@@@@@@@@@▬▬▬▬▬▬▬======@@@@@@@@▬▬▬▬▬▬▬▬▬▬▬▬Abstract:
En ajoutant a un acide amine ou peptide N-acyle dans un solvant organique une amine tertiaire (tri-n-butylamine), puis du chloroformiate ( = chlorocarbonate = chloromethanoate) d'ethyle (ou de methyle) en quantites equimoleculaires, on obtient immediatement une solution contenant des anhydrides mixtes de la forme:
Si, a une telle solution, on ajoute une solution aqueuse ou organique d'un acide amine, d'un peptide, d'un ester de ceux-ci, ou d'une amine, on obtient sur le champ la formation d'une liaison peptidique, avec degagement de CO2. Grâce a cette methode simple et rapide, nous avons prepare divers dipeptides ainsi qu'un tetrapeptide (a partir de deux dipeptides). Avec l'ammoniac, ces anhydrides mixtes alcoylcarboniques donnent des amides.read more
Citations
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Peptide coupling reagents, more than a letter soup
TL;DR: Peptide Coupling Reagents, More than a Letter Soup Ayman El-Faham* and Fernando Albericio* Institute for Research in Biomedicine, Barcelona Science Park, Baldiri Reixac 10, 08028-Barcelona, Spain.
Journal ArticleDOI
Comparing the polarities of the amino acids: side-chain distribution coefficients between the vapor phase, cyclohexane, 1-octanol, and neutral aqueous solution
Anna Radzicka,Richard Wolfenden +1 more
TL;DR: In this paper, distribution coefficients between dilute solutions in water and dilute solution in wet cy- clohexane have been determined for each of the common amino acid side chains at pH 7; they are closely related to the inside-outside distributions of the side chains observed in globular proteins.
Journal ArticleDOI
Biologically Active Water-insoluble Protein Polymers 1. THEIR USE FOR ISOLATION OF ANTIGENS AND ANTIBODIES
TL;DR: Evidence has been obtained to show that polymerization has occurred and that the protein molecules are linked covalently to one another, and to remove contaminating antigen and antibody proteins from solutions.
Journal ArticleDOI
The incorporation of amines into protein
TL;DR: A Ca++-activated enzyme system derived from the soluble fraction of guinea pig liver which incorporates a wide variety of amines into proteins is described and possible mechanisms for the reaction and the relation of this system to other amine-incorporating reactions are discussed.
Journal ArticleDOI
Chloroformates in gas chromatography as general purpose derivatizing agents.
TL;DR: Reaction conditions were optimized for various classes of carboxylic acids and a uniquely rapid derivatization of amino acids in aqueous ethanol was shown to be possible and most of the analytes, e.g. acidic metabolites in physiological fluids, could be treated directly in the aqueously matrix.
References
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Journal ArticleDOI
On proteolytic enzymes v. on the specificity of dipeptidase
Journal ArticleDOI
Dosage colorimétrique des acides aminés séparés par chromatographie sur papier. (Etudes chromatographiques III)
TL;DR: In this paper, le dosage colorimetrique des acides amines separes par chromatographie sur papier is effectue par un reactif a la ninhydrinehydrindantine apparente a celui de Moore & Stein.
Journal ArticleDOI
Séparation rapide des acides aminés par chromatographie ascendante bidimensionnelle sur papier. (Etudes chromatographiques I)
TL;DR: In this paper, it is possible to separer quantitativement in deux chromatographies bidimensionnelles ascendantes les 18 acides amines courants in moins de 13 heures.
Journal ArticleDOI
A method for the stepwise degradation of polypeptides
Max Bergmann,Leonidas Zervas +1 more
TL;DR: In this paper, a method was described whereby each successive amino acid in polypeptides may be characterized and the order of amino acids in the polyptide chain determined, which involves a combination of the aside degradation of Curtius with our carbobenzoxy method.
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