>6a4rA (A:) observed residues (from ATOM records)
nlyfqgsellllsnstlpgkawlehalplianqlngrrsavfipfagvtqtwdeytdkta
evlaplgvnvtgihrvadplaaiekaeiiivgggntfqllkesrergllapmadrvkrga
lyigwsaganlacptirttndmpivdpngfdaldlfplqinphftnalpeghkgetreqr
irellvvapeltviglpegnwiqvsngqavlggpnttwvfkageeavaleaghrf