>4zexB (B:) observed residues (from ATOM records)
ndeikiiftaldgtllnsenkvseqnlesliraqekgikvviatgrsifsvenvigehvk
knrisllpgiymngcvtfdekgsrvidrimnndlkmeihefskqiniskyaiwfclekty
cfeindcireymevealnpdviednmlegltvykvlfslpenilentlklcrekfshrin
vantfqsyvelfhqhtnkfegvkeickyynislnnalamgdgendiemlsglthsvgvhn
asekvknsaayvgpsnnehaishvlktfcd