>4xg9A (A:) observed residues (from ATOM records)
vyldrklltledkelgsgnfgtvkkgyyqmkkvvktvavkilkpalkdellaeanvmqql
dnpyivrmigiceaeswmlvmemaelgplnkylqqnrhvkdkniielvhqvsmgmkylee
snfvhrdlaarnvllvtqhyakisdfglskalradenyykapvkwyapecinyykfssks
dvwsfgvlmweafsygqkpyrgmkgsevtamlekgermgcpagcpremydlmnlcwtydv
enrpgfaavelrlrnyyyd