About the Authors
Medical Research Council Laboratory of Molecular Biology, Division of Protein and Nucleic Acid Chemistry, Cambridge, United Kingdom
Medical Research Council Centre for Medical Molecular Virology, Division of Infection and Immunity, University College London, London, United Kingdom
HIV Drug Resistance Program, National Cancer Institute, Frederick, Maryland, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: AJP AJF TS GJT LCJ. Performed the experiments: AJP AJF TS TE. Analyzed the data: AJP AJF TS GJT LCJ. Contributed reagents/materials/analysis tools: TE KL VNK JWC. Wrote the paper: AJP AJF VNK GJT LCJ.