>1xxfB (B:) observed residues (from ATOM records) ivggtasvrgewpwqvtlhttsptqrhlcggsiignqwiltaahcfygvespkilrvysg ilnqaeikedtsffgvqeiiihdqykmaesgydiallklettvnyadsqrpiclpskgdr nviytdcwvtgwgyrklrdkiqntlqkakiplvtneecqkryrghkithkmicagyregg kdackgdsggplsckhnevwhlvgitswgegcaqrerpgvytnvveyvdwilektqa