>2fr6D (D:) observed residues (from ATOM records)
vepehvqrlllssreakksaycpysrfpvgaalltgdgrifsgcnienacyplgvcaert
aiqkaisegykdfraiaissdlqeefispcgacrqvmrefgtdwavymtkpdgtfvvrtv
qellpasfgpedlqkiq