PRB1 GI:41349486 proline-rich protein BstNI subfamily 1 isoform 3 preproprotein 1 mllillsval lalssaqnln edvsqeesps liagnpqgps pqggnkpqgp 50 51 ppppgkpqgp ppqggnkpqg ppppgkpqgp ppqgdksrsp rsppgkpqgp 100 101 ppqggkpqgp paqggsksqs arsppgkpqg ppqqegnnpq gppppaggnp 150 151 qqpqappagq pqgpprppqg grpsrppq