>3gcuB (B:) observed residues (from ATOM records)
rptfyrqelnktiwevperyqnlspvgsgaygsvcaafdtktglrvavkklsrpfqsiih
akrtyrelrllkhmkhenviglldvftparsleefndvylvthlmgadlnnivkcqkltd
dhvqfliyqilrglkyihsadiihrdlkpsnlavnedcelkildfglvatrwyrapeiml
nwmhynqtvdiwsvgcimaelltgrtlfpgtdhidqlklilrlvgtpgaellkkissesa
rnyiqsltqmpkmnfanvfiganplavdllekmlvldsdkritaaqalahayfaqyhdpd
depvadpydqsfesrdllidewksltydevisfvppp