Uncovering A Hidden Protein "tail" that Puts the Brakes on Cell Signaling
Published:20 May2018    Source:Science Daily
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.

The mechanism, dubbed a "tail," is part of a small protein known mostly for its role in attaching larger structures to the cell membrane. When researchers inactivated the tail, a signaling response that had previously taken 30 minutes to occur happened almost immediately -- with an intensity four times greater than normal.

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