>2r4tA (A:) observed residues (from ATOM records)
mqvlhvcsemfpllktggladvigalpaaqiadgvdarvllpafpdirrgvtdaqvvsrr
dtfaghitllfghyngvgiylidaphlydrpgspyhdtnlfaytdnvlrfallgwvgaem
asgldpfwrpdvvhahdwhaglapaylaargrpaksvftvhnlayqgmfyahhmndiqlp
wsffnihglefngqisflkaglyyadhitavsptyareitepqfaygmegllqqrhregr
lsgvlngvdekiwspetdlllasrytrdtledkaenkrqlqiamglkvddkvplfavvsr
ltsqkgldlvlealpglleqggqlallgagdpvlqegflaaaaeypgqvgvqigyheafs
hrimggadvilvpsrfepcgltqlyglkygtlplvrrtggladtvsdcslenladgvasg
fvfedsnawsllrairrafvlwsrpslwrfvqrqamamdfswqvaaksyrelyyrlk