Abstract
Antisera were raised in rabbits to human properdin in the precursor form (P) and in the activated state (P). On Ouchterlony analysis using the anti-P, reactions of complete identity were obtained between P, P, and properdin in twofold concentrated serum (NHS). However, when anti-P was used, a reaction of identity was obtained only between P and NHS, and a reaction of partial identity was formed between P and P and between properdin in NHS and P, suggestive of the fact that certain antigenic determinants in P may be lacking in P. The results indicate that activation of precursor properdin may involve proteolytic cleavage and/or conformational alterations of the molecule.
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Schedule a callMore From: Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.)
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