PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
1445269-1	1992	By site-directed mutagenesis of a human complement factor C5a cDNA clone, we have designed a hybrid anaphylatoxin in which three amino acid residues in the C-terminal sequence of human C5a were exchanged to create the native C-terminal human C3a (hC3a) sequence Leu-Gly-Leu-Ala-Arg.	L-Arginine, L-alanyl-	274-281	complement C3	Homo sapiens	242-245	
3486674-2	1986	Studies with synthetic peptides have shown that the active site of this anaphylatoxin resides in the COOH-terminal portion of C3a; the minimal peptide structure capable of expressing activity contains residues 73-77, Leu-Gly-Leu-Ala-Arg (C3a-73-77).	L-Arginine, L-alanyl-	229-236	complement C3	Homo sapiens	126-129	
6603573-3	1983	The essential active site of C3a is comprised in the model peptide containing the five COOH-terminal residues, Leu-Gly-Leu-Ala-Arg.	L-Arginine, L-alanyl-	123-130	complement C3	Homo sapiens	29-32