Institution: | ‡Institute of Structural and Molecular Biology, Division of Biosciences, Darwin Building, University College London, Gower Street, London WC1E 6BT, United Kingdom, the §Department of Pathology, College of Medicine and King Khalid University Hospital, King Saud University, Riyadh 11461, Saudi Arabia, and the ¶Department of Clinical Biochemistry and Immunology, General Infirmary at Leeds, Great George St., Leeds LS1 3EX, United Kingdom |