On a User Context it is possible to apply filters. Filter will mark as hidden (or masked) protein groups or proteins inside protein groups (depending on user choice) which respect user defined criteria.

• If protein groups are filtered, the typical protein is considered but the whole group is (eventually) marked as hidden.
• If proteins are filtered, each proteins of each protein groups are considered and (eventually) marked as hidden. If typical protein is set hidden, then another sameset protein is set as typical. If there is no more none hidden sameset then the whole protein group is set as hidden.

The available filters are described in the how to filter proteins [groups] .