>1y4zC (C:) observed residues (from ATOM records)
mqflnmfffdiypyiagavfligswlrydygqytwraassqmldrkgmnlasnlfhigil
gifvghffgmltlpievkqkmamfaggasgvlcliggvlllkrrlfsprvratttgadil
ilsllviqcalglltipfsaqhmdgsemmklvgwaqsvvtfhggasqhldgvafifrlhl
vlgmtlfllfpfsrlihiwsvpveyltrkyqlvrarh