Greenland sharks live 400 years with unique DNA repair genes we don't have

The Greenland shark is the longest-lived vertebrate: 272-512 years estimated. Scientists sequenced its genome in 2021 and found something surprising—it carries unique variants in DNA repair genes that no other vertebrate has. Not just more of the same repair machinery. Different machinery entirely.

Deep dive with the specific genes, evolutionary context, and which pathways might be translatable below.