MMP28 GI:73808271 matrix metalloproteinase 28 isoform 3 1 mvarvglllr alqlllwghl daqpaerggq elrkeaeafl ekygylneqv 50 51 pkaptstrfs dairafqwvs qlpvsgvldr atlrqmtrpr cgvtdtnsya 100 101 awaerisdlf arhrtkmrrk krfakqgehc