Isolation and identification of hydroxyproline analogues of bradykinin in human urine

H Kato, Y Matsumura, H Maeda - FEBS letters, 1988 - Wiley Online Library
H Kato, Y Matsumura, H Maeda
FEBS letters, 1988Wiley Online Library
Hydroxyproline (Hyp) analogues of bradykinin and lysyl‐bradykinin, in which the third
residue of bradykinin, proline, is replaced by hydroxyproline, were isolated from human
urine. Their amino acid sequences were confirmed by both amino acid and sequence
analyses, and also by comparison of their chromatographic behavior with that of synthetic
peptides. The possibility that Lys‐Ala3‐bradykinin, isolated by Mindroiu et al.[(1986) J. Biol.
Chem. 261, 7407‐7411] from human urine, was actually Lys‐Hyp3‐bradykinin is discussed.
Hydroxyproline (Hyp) analogues of bradykinin and lysyl‐bradykinin, in which the third residue of bradykinin, proline, is replaced by hydroxyproline, were isolated from human urine. Their amino acid sequences were confirmed by both amino acid and sequence analyses, and also by comparison of their chromatographic behavior with that of synthetic peptides. The possibility that Lys‐Ala3‐bradykinin, isolated by Mindroiu et al. [(1986) J. Biol. Chem. 261, 7407‐7411] from human urine, was actually Lys‐Hyp3‐bradykinin is discussed.
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