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properdin Line breaks: pro|per¦din
Pronunciation: /prəʊˈpəːdɪn/

Definition of properdin in English:


[mass noun] Biochemistry
A protein present in the blood, involved in the body’s response to certain kinds of infection.
Example sentences
  • It has developed proprietary monoclonal antibodies to properdin that are potent in vitro and in vivo inhibitors of the complement alternative pathway.
  • Complement properdin increased by 21 percent compared to the placebo group.
  • In addition to evaluating the levels of complement properdin, measurement of other components of the complement system may provide more conclusive evidence on complement system activation.


1950s: from pro-2 'before' + Latin perdere 'destroy' + -in1.

Definition of properdin in:
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