>1x27B (B:) observed residues (from ATOM records)
mnlvialhsyepshdgdlgfekgeqlrileqsgewwkaqslttgqegfipfnfvakansl
epepwffknlsrkdaerqllapgnthgsfliresestagsfslsvrdfdqnqgevvkhyk
irnldnggfyispritfpglhelvrhytnasdglctrlsrpcqt