>2vk4A (A:) observed residues (from ATOM records)
seitlgrylferlkqvevqtifglpgdfnlslldniyevpgmrwagnanelnaayaadgy
arlkgmsciittfgvgelsalngiagsyaehvgvlhvvgvpsvqakqlllhhtlgngdft
vfhrmssnisettamitdintapaeidrcirttyvsqrpvylglpanlvdltvpaslldt
pidlslkpndpeaeeevienvlqlikeaknpviladaccsrhdakaetkklidltqfpaf
vtpmgkgsidekhprfggvyvgtlsspavkeavesadlvlsvgallsdfntgsfsysykt
knivefhsdytkirsatfpgvqmkfalqklltkvadaakgykpvpvpsepehneavadst
plkqewvwtqvgeflregdvvitetgtsafginqthfpnntygisqvlwgsigfttgatl
gaafaaeeidpkkrvilfigdgslqltvqeistmirwglkpylfvlnndgytierlihge
taqynciqnwqhlellptfgakdyeavrvsttgewnklttdekfqdntrirlievmlptm
dapsnlvkqaqltaatnakn