A complement C3 alpha chain proteolytic cleavage product that corresponds to the second portion after proteolytic cleavage (into four chains) of complement C3b alpha' chain by factor I. Example: UniProtKB:P01024, 955-1303. [ PRO:DAN http://www.ncbi.nlm.nih.gov/pubmed/2579379 ]

Synonyms: C3/dg

This is just here as a test because I lose it