>4n63A (A:) observed residues (from ATOM records)
dkiclghhavsngtkvntltergvevvnatetvertnipricskgkrtvdlgqcgllgti
tgppqcdqflefsadliierregsdvcypgkfvneealrqilresggidkeamgftysgi
rtngatsacrrsgssfyaemkwllsntdnaafpqmtksykntrkspalivwgihhsvsta
eqtklygsgnklvtvgssnyqqsfvpspgarpqvnglsgridfhwlmlnpndtvtfsfng
afiapdrasflrgksmgiqsgvqvdancegdcyhsggtiisnlpfqnidsravgkcpryv
kqrslllatgmknvpeip