CC1/2

Examples for citations from papers using (possibly among other criteria) CC_1/2 and/or the paired refinement method (reference below) for finding the high-resolution cutoff.

1. "In choosing our highest-resolution cutoff we chose shells, which still fulfil CC1/2 (ref. 57) >25% and I/σ(I) greater than or equal to 0.5 and which were supported by our results from the paired refinement method (ref. 57). Choosing a lower resolution cutoff did not improve the overall quality of the maps." Models were refined at 6.0 and 3.4 Å, respectively [1].
2. http://www.nature.com/nature/journal/vaop/ncurrent/full/nature18934.html#methods "The final data set used for structure solution and refinement was merged from data from nine crystals for apo-SMOΔC and two crystals for vismo-SMOΔC. Data collection statistics are shown in Extended Data Table 1." That table shows high resolution values of 3.2 and 3.3 Å, respectively, with CC_1/2 of 0.237 and 0.357, and I/σ(I) of 0.6. It also gives CC*, CC_work and CC_free and demonstrates that CC_work < CC*, as is to be expected.

References

P.A. Karplus and K. Diederichs (2012) Linking Crystallographic Model and Data Quality. Science 336, 1030-1033