Single point D-substituted corticotropin-releasing factor analogues: effects on potency and physicochemical characteristics.
1993
In an attempt to determine which conformational parameters are important for the biological activity of ovine corticotropin-releasing factor (oCRF), we have synthesized in significant amounts (50-200 mg) and characterized chemically, structurally (CD), and biologically, oCRF analogues with substitution of each amino acid by its corresponding D-isomer. Out of 37 of these analogues, three were found to be equipotent to, or twice as potent as, oCRF, 13 had potencies in the range from 10 to 60%, 17 had potencies ranging from 1 to 10%, and the four others had potencies less than 0.5%
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