>4yx9A (A:) observed residues (from ATOM records)
aeefpvpngfesayrevdgvklhyvkggqgplvmlvhgfgqtwyewhqlmpelakrftvi
apdlpglgqseppktgysgeqvavylhklarqfspdrpfdlvahdigiwntypmvvknqa
diarlvymeapipdariyrfpaftaqgeslvwhfsffaaddrlaetliagkerfflehfi
kshasntevfserlldlyarsyakphslnasfeyyralnesvrqnaelaktrlqmptmtl
aggghggmgtfqleqmkayaedveghvlpgcghwlpeecaapmnrlvidflsr