Figure 1.
The Cx43 lifecycle. Key steps of the lifecycle are highlighted: transcriptional control of Cx43 expression pattern and level, mTOR-regulated alternative internal translation of Gja1 mRNA, the role of smaller N-terminally truncated Cx43 isoforms in ER-to-Golgi transport, and directed targeting to the ID via the microtubule and actin cytoskeleton.