The semisynthesis of C-terminal peptides of gastrin, calcitonin gene-related peptides (rat and human), and cholecystokinin, or of human neuropeptide Y was achieved by introduction of Phe-NH2 or Tyr-NH2 at their carboxyl termini, respectively. Thermolysin or the related enzyme was used
Shortage of reliable plasma assays has hampered studies of cholecystokinin (CCK). The assay problems are low plasma concentrations, extensive molecular heterogeneity, and close homology of CCK to gastrin, which circulates in higher concentrations. To develop an accurate CCK RIA, antibodies
Chemistry (Weinheim an der Bergstrasse, Germany), 14(4), 1312-1321 (2007-11-23)
The monomer N'-octadecyl-N(alpha)-(4-vinyl)-benzoyl-L-phenylalanineamide (4) based on L-phenylalanine has been simply but effectively synthesized, and its self-assembling properties have been investigated. FTIR and a variable-temperature (1)H NMR spectroscopic investigation demonstrated that the aggregation of compound 4 in various organic solvents is
Kojic acid-phenylalanine amide (KA-F-NH(2)), which showed an excellent tyrosinase inhibitory activity, did not inhibit melanogenesis in melanocyte due to its low cell permeability. To enhance its cell permeability by increasing lipophilicity, we prepared metal coordination compounds of KA-F-NH(2) and characterized
We have applied SELEX (Systematic Evolution of Ligands by EXponential enrichment), a combinatorial method that employs biopolymers for drug discovery, to identify single stranded DNA sequences able to bind L-Tyrosinamide, a simple mimic of Tyrosine, an amino acid essential to
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