>2b4bB (B:) observed residues (from ATOM records)
akfvirpataadcsdilrlikelaryeymeeqviltekdlledgfgehpfyhclvaevpk
ehwtpeghsivgfamyyftydpwigkllyledffvmsdyrgfgigseilknlsqvamrcr
cssmhflvaewnepsinfykrrgasdlsseegwrlfkidkeyllkmatee