emm3.21 (emm-cluster A-C5) subtype-determining sequence encoding 10 C terminal signal sequence residues and 50 N terminal residues of mature M protein. emm3.21 from 2003-2004 pharyngitis season surveillance isolate IL04-49 recovered in Illinois. emm3.21.sds Length: 180 August 29, 2006 15:44 Type: N Check: 6858 .. 1 GGACTGGTAG CAGGGCAGAC AGTAAAGGCA GATGCTAGGA GTGTTAATGG 51 AGAGTTTCCT AGACATGTTA AATTAAAAAA TGAAATTGAG AACTTGTTAG 101 ATCAGGTTAC ACAATTATAT ACTAAACATA ATAGTAATTA CCAACAATAT 151 GCACAAGATG CACAAGCTGG CAGACTTGAC