>5l51A (A:) observed residues (from ATOM records)
atkryavvtgankgigfeickqlaskgitvilasrdekrgiearerlikelgsefgdyvv
sqqldvadpasvaalvdfiktkfgsldilvnnaglngtymegdasvlndyveaefktfqs
gaaktepyhpkatgrlvetvehakecietnyygskrvtealipllqqsdsprivnvsstl
sslvfqtnewakgvfsseeglteekleevlaeflkdfidgkqqekqwpphfsaykvskaa
lnaytriiakkypsfrinavcptdaeaaeapvklallpqggpsgcfffrde