>2f4wA (A:) observed residues (from ATOM records)
tatqrlkqdylrikkdpvpyicaeplpsnilewhyvvrgpemtpyeggyyhgklifpref
pfkppsiymitpngrfkcntrlcwnpawsvstiltgllsfmvekgptlgsietsdftkrq
lavqslafnlkdkvfcelfpevveeik