title: The structure and mechanism of activation of the first component of complement.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D001665:Binding Sites; D003172:Complement C1 / Q000032:analysis / Q000302:isolation & purification / Q000378:metabolism*; D003165:Complement System Proteins / Q000378:metabolism*; D006801:Humans; D007136:Immunoglobulins / Q000378:metabolism; D008970:Molecular Weight; D010455:Peptides / Q000032:analysis; D011817:Rabbits
chemical_list: D000596:Amino Acids; D003172:Complement C1; D007136:Immunoglobulins; D010455:Peptides; D003165:Complement System Proteins