>2fblB (B:) observed residues (from ATOM records) teierkflvatfpdgelhavplrqgylttptdsielrlrqqgteyfmtlkseggrqeyei qidvtqfemlwpategrrvektrysgklpdgqlfeldvfaghlsplmlveveflsedaaq afipppwfgeevtedkryknkalalsip