>3btcB (B:) observed residues (from ATOM records) nlkdkilgvakelfikngynatttgeivklsesskgnlyyhfktkenlfleilniqeskw qeqwkkeqikaktnrekfylynelsltteyyyplqnaiiefyteyyktnsinekmnklen kyidayhvifkegnlngewsindvnavskiaanavngivtftheqnineriklmnkfsqi flngls