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Biological Process Browser

Searches or browses for structure by Gene Ontology Biological Process terms. Biological Process terms are a set of controlled vocabulary terms defined by the Gene Ontology project (

The Biological Process Browser permits the user to navigate through the Biological Process hierarchy to arrive at the subset of particular interest. The browser opens up the top level in the hierarchy. Clicking on the arrow/folder icons expands the respective nodes. Clicking on the name of the node will retrieve all PDB IDs assigned to that node.

Important: Make sure pop-ups are enabled in your browser (Click here to check).


  1. Search by a term

    Oxygen transport

    Type Oxygen transport in the text box above the tree and click the "Find in Tree" button. To see the number of structures related to "Oxygen transport", Click on the name to retrieve a list of these structures.

  2. Browse the biological process tree

    Electron Transport Chain

    Mouse over Metabolic process to see the number of structures that belong to this category. Expand this node and navigate to oxidation reduction and then to electron transport chain. Mouse over electron transport chain to see how many structures have been assigned to this term. Click on the name to retrieve this set of structures.