>4c73A (A:) observed residues (from ATOM records)
qpstanggfpsvvvtavtattsispdiestwkgllagesgihaledefvtkwdlavkigg
hlkdpvdshmgrldmrrmsyvqrmgkllggqlwesagspevdpdrfavvvgtglggaeri
vesydlmnaggprkvsplavqmimpngaaaviglqlgaragvmtpvsaqssgseaiahaw
rqivmgdadvavcggvegpiealpiaafsmmramstrndeperasrpfdkdrdgfvfgea
galmlieteehakargakplarllgagitsdafhmvapaadgvragramtrslelaglsp
adidhvnahgtatpigdaaeanairvagcdqaavyapksalghsigavgalesvltvltl
rdgvipptlnyetpdpeidldvvageprygdyryavnnsfgfgghnvalafgry