>4xpaL (L:) observed residues (from ATOM records)
envltqspaimstspgekvtmtcrasssvgssylhwyqqksgaspklwiystsnlasgvp
arfsgsgsgtsysltissveaedaatyycqqfsgypltfgsgtklemkradaaptvsifp
psseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysmsstl
tltkdeyerhnsytceathktstspivksfnrne