>4xg7A (A:) observed residues (from ATOM records)
yldrklltledkelgtvkkgyyqmkkvvktvavkilkneapalkdellaeanvmqqldnp
yivrmigiceaeswmlvmemaelgplnkylqqnrhvkdkniielvhqvsmgmkyleesnf
vhrdlaarnvllvtqhyakisdfglskalradenyykaqthgkwpvkwyapecinyykfs
sksdvwsfgvlmweafsygqkpyrgmkgsevtamlekgermgcpagcpremydlmnlcwt
ydvenrpgfaavelrlrnyyydvvnl