>2it6A (A:) observed residues (from ATOM records) chpcpwewtffqgncyfmsnsqrnwhdsitackevgaqlvviksaeeqnflqlqssrsnr ftwmglsdlnqegtwqwvdgspllpsfkqywnrgepnnvgeedcaefsgngwnddkcnla kfwickksaasc