Fig. 6.

Cross-links mapped to a PDB structure of BSA. Cross-links identified in the BSA data set and mapped onto chain A of PDB structure 4F5S. Cross-links spanning a Euclidean distance of more than 35 Å are colored red. Those spanning a smaller distance are colored blue. A, DSS URPs identified by OpenPepXL in the orbitrap data set. B, PDH URPs identified by OpenPepXL in the orbitrap data set. C, DSS URPs identified by xQuest in the ion trap data set. D, PDH URPs identified by xQuest in the ion trap data set.