>6a4sA (A:) observed residues (from ATOM records)
nlyfqgsellllsnstlpgkawlehalplianqlngrrsavfipfagvtqtwdeytdkta
evlaplgvnvtgihrvadplaaiekaeiiivgggntfqllkesrergllapmadrvkrga
lyigwsaganlacptirttndmpivdpngfdaldlfplqinphftnalpeghkgetreqr
irellvvapeltviglpegnwiqvsngqavlggpnttwvfkageeavaleaghrf