Figure 2

The basic DHTML list interface to LinkHub. Here, the data and relationships for UniProt identifier P26364 are presented. P26364 is presented at the root of the list, and lower levels contain information on additional related identifiers. Each identifier has two subsections: Links which gives a list of hyperlinks to web documents directly relevant to the identifier; and Equivalent or Related Ids which contains a list of additional identifiers related to the first identifier (the relationship type if it exists is given in parentheses; a synonym relationship is assumed if no relationship is given). The identifiers in the Equivalent and Related Ids section may themselves be further related to other identifiers which will have their own Links and Equivalent or Related Ids sections, ad nauseum. The initial display shows the transitive closure of the root identifier one level deep, and dynamic callbacks to the server retrieve additional data when the user clicks on identifiers whose subsections have not yet been loaded; in this way, the user can explore the relationship paths he desires without performance penalties (of loading the whole graph) or 'information overload'. The interface is dynamic, and a '+' list icon can be expanded to view the hidden underlying content, and a '-' list icon can be clicked to hide the content.