Nucleic Acids Research, (2017). doi: 10.1093/nar/gkx063
The Authors would like to add additional information to their funding statement. Their amended statement is as follows:
This research was primarily supported by U.S. National Science Foundation CAREER grant [DMR- 1450747], which supported J.M.S. and E.F. and provided most materials and supplies. H. K. K. S. was supported by U.S. Department of Energy grant [SC0010595]. Funding for open access charge: NSF Award [DMR-1450747].
This information has also been corrected online and in print.