>2r3fA (A:) observed residues (from ATOM records)
menfqkvekigegtygvvykarnkltgevvalkkirvpstaireisllkelnhpnivkll
dvihtenklylvfeflhqdlkkfmdasaltgiplpliksylfqllqglafchshrvlhrd
lkpqnllintegaikladfglarafgvpvrtythevvtlwyrapeillgckyystavdiw
slgcifaemvtrralfpgdseidqlfrifrtlgtpdevvwpgvtsmpdykpsfpkwarqd
fskvvppldedgrsllsqmlhydpnkrisakaalahpffqdvtkpvphlrl