title: Trypsin-catalyzed peptide synthesis with m-guanidinophenyl and m-(guanidinomethyl)phenyl esters as acyl donor component.
abstract: Two series of inverse substrates, m-guanidinophenyl and m-(guanidinomethyl)phenyl esters derived from N-(tert-butyloxycarbonyl)-amino acid, were prepared as an acyl donor component for trypsin-catalyzed peptide synthesis. The kinetic behavior of these esters toward tryptic hydrolysis was analyzed. They were found to couple with an acyl acceptor such as L-alanine p-nitroanilide to produce dipeptide in the presence of trypsin. Streptomyces griseus trypsin was a more efficient catalyst than the bovine trypsin. Within the enzymatic peptide coupling methods, this approach was shown to be advantageous, since the resulting peptides are resistant to the enzymatic hydrolysis.
authors.affiliation: Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Sekizaki
authors.forename: K
authors.initials: K
authors.lastname: Itoh
authors.forename: E
authors.initials: E
authors.lastname: Toyota
authors.forename: K
authors.initials: K
authors.lastname: Tanizawa
mesh_terms: D000818:Animals; D002384:Catalysis; D002417:Cattle; D004952:Esters; D006146:Guanidines / Q000737:chemistry*; D006868:Hydrolysis; D007700:Kinetics; D010452:Peptide Biosynthesis; D014357:Trypsin / Q000378:metabolism*
chemical_list: D004952:Esters; D006146:Guanidines; D014357:Trypsin