>1r4xA (A:) observed residues (from ATOM records)
mhhhhhhmtrqeifqeqlaavpefrglgplfksspepvalteseteyvirctkhtftnhm
vfqfdctntlndqtlenvtvqmepteayevlcyvparslpynqpgtcytlvalpkedpta
vactfscmmkftvkdcdpttgetddegyedeyvledlevtvadhiqkvmklnfeaawdev
gdefekeetftlstiktleeavgnivkflgmhpcersdkvpdnknthtlllagvfrgghd
ilvrsrlllldtvtmqvtarsleelpvdiilasv