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Cell Component Browser

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

The Cell Component Browser permits the user to navigate through the Cell Component 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


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

  2. Browse the cell component tree

    Apical plasma membrane

    Mouse over cell to see the number of structures that belong to this category. Expand this node, then expand the node cell part, and finally expand the node apical part of cell". Mouse over apical plasma membrane to see how many structures have been assigned to this term. Click on the name to retrieve this set of structures.