>4k2sA (A:) observed residues (from ATOM records)
slkirdaytivtcpgrnfvtlkivtesgthgigdatlngremavaayldehvvpaligrd
agriedtwqylyrgaywrrgpvtmtaiaavdmalwdikakaagmplyqllggksrervmt
yahctgqtiedclgevarhvelgyravrvqsgvpgiettygvasslpaehvwstekylnh
apklfaavrerfgddlhvlhdvhhrltpieaarlgkavepyhlfwledcvpaenqeslrl
irehtttplaigevfnsihdcreliqnqwidyirmplthgggitamrrvadlaslyhvrt
gfhgatdlspvclgaaihfdtwvpnfgiqehmphtdetdavfphdyrfedghflagespg
hgvdideelaakypyeraslpvnrledgtlwhw