Uncovering a hidden protein 'tail' that puts the brakes on cell signaling

Using an informatics tool that identifies “hotspots” of post-translational modification (PTM) activity on proteins, researchers have found a previously-unknown mechanism that puts the brakes on an important cell signaling process involving the G proteins found in most living organisms.
Source: FS – All – Science – News 2
Uncovering a hidden protein 'tail' that puts the brakes on cell signaling