>2ch1B (B:) observed residues (from ATOM records)
kftpppaslrnpliipekimmgpgpsncskrvltamtntvlsnfhaelfrtmdevkdglr
yifqtenratmcvsgsahagmeamlsnlleegdrvliavngiwaeravemserygadvrt
iegppdrpfsletlaraielhqpkclflthgdsssgllqplegvgqichqhdcllivdav
aslcgvpfymdkweidavytgaqvlgappgitpisispkaldvirnrrtkskvfywdlll
lgnywgcydepkryhhtvasnlifalrealaqiaeeglenqikrriecaqilyeglgkmg
ldifvkdprhrlptvtgimipkgvdwwkvsqyamnnfslevqgglgptfgkawrvgimge
cstvqkiqfylygfkeslkathpdyif