>2b4dA (A:) observed residues (from ATOM records)
akfvirpataadcsdilrlikelakyeymeeqviltekdlledgfgehpfyhclvaevpk
ehwtpeghsivgfamyyftydpwigkllyledffvmsdyrgfgigseilknlsqvamrcr
cssmhflvaewnepsinfykrrgasdlsseegwrlfkidkeyllkmatee