>4xkkA (A:) observed residues (from ATOM records)
maesqverftfqaeinqlmsliintfysnkevflrelisnasdaldkiryqsltdasvle
skteleikiipdktaktltlidsgigmtktdmvknlgtiarsgtknfmeqlqsgaadism
igqfgvgfysaylvadtvivhsknnddeqyvwessaggeftialdhteplgrgtkivlhm
kedqldyldetkiknlvkkhsefiqypislltike