>2f74A (A:) observed residues (from ATOM records)
phsmryfetavsrpgleepryisvgyvdnkefvrfdsdaenpryeprapwmeqegpeywe
retqkakgqeqwfrvslrnllgyynqsaggshtlqqmsgcdlgsdwrllrgylqfayegr
dyialnedlktwtaadmaaqitrrkweqsgaaehykaylegecvewlhrylkngnatllr
tdspkahvthhprskgevtlrcwalgfypaditltwqlngeeltqdmelvetrpagdgtf
qkwasvvvplgkeqnytcrvyheglpepltlrwep