>1twwB (B:) observed residues (from ATOM records)
kwdydlrcgeytlnlnektlimgilnvtpggsynevdaavrhakemrdegahiidiggev
sveeeikrvvpmiqavskevklpisidtykaevakqaieagahiindiwgakaepkiaev
aahydvpiilmhnrdnmnyrnlmadmiadlydsikiakdagvrdeniildpgigfaktpe
qnleamrnleqlnvlgypvllgtsrksfighvldlpveerlegtgatvclgiekgcefvr
vhdvkemsrmakmmdamigk