>1y4wA (A:) observed residues (from ATOM records)
fnydqpyrgqyhfspqknwmndpngllyhngtyhlffqynpggiewgniswghaisedlt
hweekpvallargfgsdvtemyfsgsavadvnntsgfgkdgktplvamytsyypvaqtlp
sgqtvqedqqsqsiayslddgltwttydaanpvipnppspyeaeyqnfrdpfvfwhdesq
kwvvvtsiaelhklaiytsdnlkdwklvsefgpynaqggvwecpglvklpldsgnstkwv
itsglnpggppgtvgsgtqyfvgefdgttftpdadtvypgnstanwmdwgpdfyaaagyn
glslndhvhigwmnnwqyganiptypwrsamaiprhmalktigskatlvqqpqeawssis
nkrpiysrtfktlsegstnttttgetfkvdlsfsakskastfaialrasanfteqtlvgy
dfakqqifldrthsgdvsfdetfasvyhgpltpdstgvvklsifvdrssvevfggqgett
ltaqifpssdavharlastggttedvradiykiastw