>2xnvB (B:) observed residues (from ATOM records)
qanlmrlksdlfnrspmypgptkddpltvtlgftlqdivkvdsstnevdlvyyeqqrwkl
nslmwdpneygnitdfrtsaadiwtpditaysstrpvqvlspqiavvthdgsvmfipaqr
lsfmcdptgvdseegvtcavkfgswvysgfeidlktdtdqvdlssyyasskyeilsatqt
rqvqhysccpepyidvnlvvkfrer