>4k2sB (B:) observed residues (from ATOM records)
lkirdaytivtcpgrnfvtlkivtesgthgigdatlngremavaayldehvvpaligrda
griedtwqylyrgaywrrgpvtmtaiaavdmalwdikakaagmplyqllggksrervmty
ahctgqtiedclgevarhvelgyravrvqsgvpgiettygsslpaehvwstekylnhapk
lfaavrerfgddlhvlhdvhhrltpieaarlgkavepyhlfwledcvpaenqeslrlire
htttplaigevfnsihdcreliqnqwidyirmplthgggitamrrvadlaslyhvrtgfh
gatdlspvclgaaihfdtwvpnfgiqehmphtdetdavfphdyrfedghflagespghgv
dideelaakypyeraslpvnrledgtlwhw