Exploring thylakoid emergence: evolution of membrane biogenesis and photosystem II assembly in early-diverging cyanobacteria - PubMed
3 hours ago
- #photosynthesis
- #cyanobacteria
- #thylakoid evolution
- The study investigates the evolutionary origin of thylakoid membranes (TM), focusing on early-diverging cyanobacteria like Gloeobacterales, which lack TM and perform photosynthesis in the cytoplasmic membrane.
- Phylogenomic analyses identified two candidate proteins, including the SPFH family member Slr1106, potentially acquired by lateral gene transfer, that may contribute to TM biogenesis and membrane trafficking.
- Analysis of PSII assembly factors revealed modifications in late-stage assembly, particularly in manganese homeostasis, and structural changes in the YidC translocase that might have enabled relocation of electron transfer components to TM.