PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6193068-4 1983 The binding of 125I-labeled alpha 2M to group G streptococci was time dependent, saturable, and could be inhibited by unlabeled alpha 2M. Iodine-125 15-19 alpha-2-macroglobulin Homo sapiens 28-36 6193068-4 1983 The binding of 125I-labeled alpha 2M to group G streptococci was time dependent, saturable, and could be inhibited by unlabeled alpha 2M. Iodine-125 15-19 alpha-2-macroglobulin Homo sapiens 128-136