About the Authors

Ruth E. Watkinson

Affiliation Division of Protein and Nucleic Acid Chemistry, Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom

William A. McEwan

Affiliation Division of Protein and Nucleic Acid Chemistry, Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom

Jerry C. H. Tam

Affiliation Division of Protein and Nucleic Acid Chemistry, Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom

Marina Vaysburd

Affiliation Division of Protein and Nucleic Acid Chemistry, Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom

Leo C. James

lcj@mrc-lmb.cam.ac.uk

Affiliation Division of Protein and Nucleic Acid Chemistry, Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: REW LCJ. Performed the experiments: REW WAM JCHT MV. Analyzed the data: REW WAM JCHT MV. Wrote the paper: REW LCJ.