Gap junction protein beta 4 plays an important role in cardiac function in humans, rodents, and zebrafish.
Okamoto R, Goto I, Nishimura Y, Kobayashi I, Hashizume R, Yoshida Y, Ito R, Kobayashi Y, Nishikawa M, Ali Y, et al. PLoS One. 2020; 15(10):e0240129. Epub 2020 Oct 13.