>4yv2A (A:) observed residues (from ATOM records)
elisggwfreendqwpgqamslrvekvlydaptkfqhltifesdpkgpwgtvmaldgciq
vtdydefvyhevlghtslcshpkpervliigggdggvlrevlrhgtvehcdlvdidgevm
eqskqhfpqisrsladpratvrvgdglafvrqtpdntydvviidteafykdvlrilkpdg
iccnqgesiwldleliekmsrfiretgfasvqyalmhvptypcgsigtlvcskkagvdvt
kplrpvedmpfakdlkyydsemhkasfalprfarhinn