>3fl4A (A:) observed residues (from ATOM records)
erptfyrqelnktiwevperyqnlspvgsgaygsvcaafdtktglrvavkklpfqsiiha
krtyrelrllkhmkhenviglldvftparsleefndvylvthlmgadlnnivltddhvqf
liyqilrglkyihsadiihrdlkpsnlavnedcelkildfgtddemtgyvatrwyrapei
mlnwmhynqtvdiwsvgcimaelltgrtlfpgtdhidqlklilrlvgtpgaellkkisse
sarnyiqsltqmpkmnfanvfiganplavdllekmlvldsdkritaaqalahayfaqyhd
pddepvadpydqsfesrdllidewksltydevisfvppp