>4xkoA (A:) observed residues (from ATOM records)
qverftfqaeinqlmsliintfysnkevflrelisnasdaldkiryqsltdasvleskte
leikiipdktaktltlidsgigmtktdmvknlgtiarsgtknfmeqlqsgaadismigqf
gvgfysaylvadtvivhsknnddeqyvwessaggeftialdhteplgrgtkivlhmkedq
ldyldetkiknlvkkhsefiqypislltikekevd