>2i54A (A:) observed residues (from ATOM records)
kaillfdvdgtltpprnpethdmkeallkaraagfklgvvggsdfakqkeqlgesiledf
dyvfsengllaykdgkefhrnsllralgnekvvafvkkclhliadldipvqrgtfvefrn
gmfnvspigrncsqqerdefenldkerhireklirelkeafpdyqlaysvggqisfdvfp
kgwdktyclqfvendfetihffgdktseggndyeiftdsrtighsvktykdtiaileall
ed