>2zz4A (A:) observed residues (from ATOM records)
vmnrlilamdlmnrddalrvtgevreyidtvkigyplvlsegmdiiaefrkrfgcriiad
fkvanipetnekicratfkagadaiivhgfpgadsvraclnvaeemgrevflltemshpg
aemfiqgaadeiarmgvdlgvknyvgpstrperlsrlreiigqdsflispgvgaqggdpg
etlrfadaiivgrsiyladnpaaaaagiiesikdl