>6bu6A (A:) observed residues (from ATOM records)
aeqfavgeiitdmaaaawkvglpigqggfgciyladmnssesvgsdapcvvkvepsdngp
lftelkfyqraakpeqiqkwirtrklkylgvpkywgsglhdkngksyrfmimdrfgsdlq
kiyeanakrfsrktvlqlslrildileyiheheyvhgdikasnlllnyknpdqvylvdyg
layrycpegvhkayaadpkrchdgtieftsidahngvapsrrgdleilgycmiqwltghl
pwednlkdpkyvrdskiryreniaslmdkcfpaanapgeiakymetvklldytekplyen
lrdillqglkaigskddgkldl