>2q4rA (A:) observed residues (from ATOM records)
pgpalclfdvdgtltaprqkitkemddflqklrqkikigvvggsdfekvqeqlgndvvek
ydyvfpenglvaykdgkllcrqniqshlgealiqdlinyclsyiakiklpkkrgtfiefr
ngmlnvspigrscsqeeriefyeldkkenirqkfvadlrkefagkgltfsiggqisfdvf
pdgwdkryclrhvendgyktiyffgdktmndheiftdprtmgysvtapedtrricellfs