Figure 1.

Overview of the relationship between PSI standard formats (blue rectangles), analysis steps (orange ovals), data repositories (purple cylinders), Application Programming Interfaces (green trapezoids), guidelines (white clipped rectangles), and other related resources described in this article. Resources with multiple prominent versions are decorated with those version numbers (gray for deprecated; blue for active; yellow for in development). Yellow elements are still early in the development process. Mass spectrometry formats are displayed relative to a typical MS workflow using standard formats.