>1xg4A (A:) observed residues (from ATOM records)
slhspgkafraaltkenplqivgtinanhallaqragyqaiylsgggvaagslglpdlgi
stlddvltdirritdvcslpllvdadigfgssafnvartvksmikagaaglhiedqvgak
rsghrpnkaivskeemvdriraavdaktdpdfvimartdalavegldaaieraqayveag
aemlfpeaitelamyrqfadavqvpilanitefgatplfttdelrsahvamalyplsafr
amnraaehvynvlrqegtqksvidtmqtrnelyesinyyqyeekldn