>6qr2A (A:) observed residues (from ATOM records)
smkidvvtifpeylqpvrqslpgkaidaglvdvavhdlrrwthdvhksvddspygggpgm
vmkptvwgdaldeictsetllvvptpagypftqetawqwstedhlviacgryegidqrva
ddaatrmrvrevsigdyvlnggeaaalviieavlrlvpgvlgsllegpsytrppswrgmd
vppvllsgdhakiaawraeqsrqrtierrpdll