>2b3uB (B:) observed residues (from ATOM records)
fvirpataadcsdilrlikelaryeymeeqviltekdlledgfpfyhclvaevpkehwtp
eghsivgfamyyftydpwigkllyledffvmsdyrgfgigseilknlsqvamrcrcssmh
flvaewnepsinfykrrgasdlsseegwrlfkidkeyllkmate