Structures of Get3D Reveal a Distinct Architecture Associated with the Emergence of Photosynthesis
June 2023
in “
Journal of Biological Chemistry
”
Studysummary In this study, the authors identified and characterized the Get3d protein, conserved across plants and photosynthetic bacteria, which localizes to the chloroplast in Arabidopsis thaliana and potentially plays a role in tail-anchored protein targeting, linked to photosynthesis homeostasis. Our plain-language summary of this paper — not a Tressless recommendation.
The study investigates the structure and function of Get3d proteins, which are conserved in land plants and photosynthetic bacteria, and their role in photosynthesis. Researchers solved the crystal structure of Arabidopsis thaliana Get3d, revealing its localization to the chloroplast and potential involvement in tail-anchored (TA) protein targeting. Get3d shares structural similarities with cyanobacterial homologs and exhibits ATPase activity, indicating its evolutionary link to photosynthesis over 1.2 billion years. The study highlights unique structural features of Get3d, such as the absence of the CXXC motif and the presence of a hydrophobic chamber, suggesting a role in lipid binding and TA protein protection. Further research is needed to confirm the exact functions and interaction partners of Get3d in photosynthesis.
