bradykinin \bra`dy*ki"nin\ n.
a hypotensive tissue hormone ({C50H73N15O11}) which acts on
smooth muscle, dilates peripheral vessels and increases
capillary permeability. It is formed locally in injured
tissue and is believed to play a role in the inflammatory
process. It is a nonapeptide with the sequence:
Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg. --MI11
Syn: kallidin I; callidin I; kallidin-9.
[PJC]