>4y72A (A:) observed residues (from ATOM records)
lgsmedytkiekigegtygvvykgrhkttgqvvamkkirleseeegvpstaireisllke
lrhpnivslqdvlmqdsrlylifeflsmdlkkyldsippgqymdsslvksylyqilqgiv
fchsrrvlhrdlkpqnlliddkgtikladfglarafgipirvythevvtlwyrspevllg
sarystpvdiwsigtifaelatkkplfhgdseidqlfrifralgtpnnevwpeveslqdy
kntfpkwkpgslashvknldengldllskmliydpakrisgkmalnhpyfnd