>2erxB (B:) observed residues (from ATOM records)
sndyrvavfgaggvgksslvlrfvkgtfresyiptvedtyrqviscsictlqitdttgsh
qfpamqrlsiskghafilvysitsrqsleelkpiyeqiceiksipimlvgnkcdespsre
vqsseaealartwkcafmetsaklnhnvkelfqellnlekrrtvsl