>2fd6U (U:) observed residues (from ATOM records)
slrcmqcktngdcrveecalgqdlcrttivrlweelelvekscthsektnrtlsyrtglk
itsltevvcgldlcnqgnyleciscgssdmscergrhqslqcrspeeqcldvvthwddrh
lrgcgylpgcpgsngfhnndtfhflkccnttkcnegpilelenlpqngrqcysckgnsth
gcsseetflidcrgpmnqclvatgthepknqsymvrgcatasmcqlgdafsmnhidvscc
tksgcnhpd