>2z91A (A:) observed residues (from ATOM records)
qllesgpdlvkpsqslsltctvtgysitsgynwhwirqfpgnklewmgyihyrgttnynt
slksrisitrdssknqfflqlnsvttedtatyycacddfysdywgqgtivtvssakttpp
svyplapgsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdlytlsssvtvps
stwpsetvtcnvahpasstkvdkkivp