Kininogen

Kininogens are proteins that are defined by their role as precursors for kinins, but that also can have additional roles. Kinins are biologically active peptides, the parent form is bradykinin.

The two main kininogen types are:

They are both spliced from the same precursor.

A third type, T-kininogen, is found in rats but not humans.

Closely related proteins include cystatin.

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