>4ym1D (D:) observed residues (from ATOM records)
gpptfnppvpyfgrlqggltarrtiiikgyvpptgksfainfkvgssgdialhinprmgn
gtvvrnsllngswgseekkithnpfgpgqffdlsircgldrfkvyangqhlfdfahrlsa
fqrvdtleiqgdvtlsyvqi