>3rgwS (S:) observed residues (from ATOM records)
prtpvlwlhglectccsesfirsahplakdvvlsmisldyddtlmaaaghqaeaileeim
tkykgnyilavegnpplnqdgmsciiggrpfieqlkyvakdakaiiswgscaswgcvqaa
kpnptqatpvhkvitdkpiikvpgcppiaevmtgvitymltfdripeldrqgrpkmfysq
rihdkcyrrphfdagqfveewddesarkgfclykmgckgpttynacsttrwnegtsfpiq
sghgcigcsedgfwdkgsfydrltgisqfg