Kinin
From Wikipedia, the free encyclopedia
A kinin is any of various structurally related polypeptides, such as bradykinin and kallidin.[1] They are members of the autacoid family.[2] Kinins are peptides that are cleaved from kininogens by the process of kallikreins. Kallikreins activate kinins when stimulated.[3]
It is a component of the kinin-kallikrein system.
Their precursors are kininogens.[4] Kininogens contain a 9-11 amino acid bradykinin sequence.[5]
In botany, the plant hormones known as cytokinins were first called kinins, but the name was changed to avoid confusion.[6]