>2rc4A (A:) observed residues (from ATOM records)
rcpsviefgkyeihtwysspypqeysrlpklylcefclkymksrtilqqhmkkcgwfhpp
aneiyrknnisvfevdgnvstiycqnlcllaklfldhktlyydvepflfyvltqndvkgc
hlvgyfskekhcqqkynvscimilpqyqrkgygrflidfsyllskregqagspekplsdl
grlsymaywksvileclyhqndkqisikklskltgicpqditstlhhlrmldrrekliqd
hmaklqlnlrpvdvdpeclrwtpv