>4rf3B (B:) observed residues (from ATOM records)
drlkgkvaivtggtlgiglaiadkfveegakvvitgrhadvgekaaksiggtdvirfvqh
dasdeagwtklfdtteeafgpvttvvnnagifvsksvedttteewrkllsvnldgvffgt
rlgiqrmknkglgasiinmssiegfvgdptlgaynaskgavrimsksaaldcalkdydvr
vntvhpgyiktplvddlegaeemmsqrtktpmghigepndiawicvylasdeskfatgae
fvvdggytaq