Figure 2.

Main elements of the PSI-MI XML schema (version 2.5.4). The entrySet root element of the schema contains one or more entry elements that describe one or more interactions within its six main child elements. These six elements have additional child elements that allow detailed annotation of experimental interaction data and metadata. A plus sign within a circle denotes an element has been collapsed. Blue and yellow boxes indicate elements and attributes of an element, respectively. Bold connections are used for required elements and attributes. All compositors (yellow circles) in the figure indicate an ordered sequence of contained particles. This figure is based on (33) and generated using the oXygen XML editor.