>4rr3N (N:) observed residues (from ATOM records)
gfptelkpgtnqflttddgvsapilpnfhptpcihipgevrnllelcqvetilevnnvpt
natslmerlrfpvsaqagkgelcavfradpgrsgpwqstllgqlcgyytqwsgslevtfm
ftgsfmatgkmliaytppggplpkdratamlgthviwdfglqssvtlvipwisnthyryt
tglvsiwyqtnyvvpigapntayiialaaaqknftmqlckdasdilqtgt