>1bl7A (A:) observed residues (from ATOM records)
erptfyrqelnktiwevperyqnlspvgsgaygsvcaafdtktglrvavkklsrpfqsii
hakrtyrelrllkhmkhenviglldvftparsleefndvylvthlmgadlnnivkcqklt
ddhvqfliyqilrglkyihsadiihrdlkpsnlavnedcelkildfglarhtddemtgyv
atrwyrapeimlnwmhynqtvdiwsvgcimaelltgrtlfpgtdhidqlklilrlvgtpg
aellkkissesarnyiqsltqmpkmnfanvfiganplavdllekmlvldsdkritaaqal
ahayfaqyhdpddepvadpydqsfesrdllidewksltydevisfvpppld