>1r3cA (A:) observed residues (from ATOM records)
erptfyrqelnktiwevperyqnlspvgsgaygsvcaafdtktglrvavkklsrpfqsii
hakrtyrelrllkhmkhenviglldvftparsleefndvylvthlmgadlnnivkcqklt
ddhvqfliyqilrglkyihsadiihrdlkpsnlavnedselkildfglarhtddemtgyv
atrwyrapeimlnwmhynqtvdiwsvgcimaelltgrtlfpgtdhidqlklilrlvgtpg
aellkkissesarnyiqsltqmpkmnfanvfiganplavdllekmlvldsdkritaaqal
ahayfaqyhdpddepvadpydqsfesrdllidewksltydevisfvppp