>1xdnA (A:) observed residues (from ATOM records)
qsdfspyieidlpsesriqslhksglaaqewvacekvhgtnfgiylinqgdhevvrfakr
sgimdpnenffgyhilideftaqirilndllkqkyglsrvgrlvlngelfgakykhplvp
ksekwctlpngkkfpiagvqiqrepfpqyspelhffafdikysvsgaeedfvllgydefv
efsskvpnllyaralvrgtldeclafdvenfmtplpallglgnyplegnlaegvvirhvr
rgdpavekhnvstiiklrcssfmel