>4xclA (A:) observed residues (from ATOM records) maesqverftfqaeinqlmsliintfysnkevflrelisnasdaldkiryqsltdasvle skteleikiipdktaktltlidsgigmtktdmvknlgtiarsgtknfmeqlqsgaadism igqfgvgfysaylvadtvivhsknnddeqyvwessaggeftialdhteplgrgtkivlhm kedqldyldetkiknlvkkhsefiqypislltik