Engineering and Physical Sciences Research Council
EP/W024063/1
英国
Future Leader Fellowship
MR/T020679/1
英国
Biotechnology and Biological Sciences Research Council (BBSRC)
BB/S015337/1
英国
Biotechnology and Biological Sciences Research Council (BBSRC)
BB/S015337/1
英国
Future Leader Fellowship
MR/T040742/1
英国
引用
ジャーナル: Nat Plants / 年: 2024 タイトル: A promiscuous mechanism to phase separate eukaryotic carbon fixation in the green lineage. 著者: James Barrett / Mihris I S Naduthodi / Yuwei Mao / Clément Dégut / Sabina Musiał / Aidan Salter / Mark C Leake / Michael J Plevin / Alistair J McCormick / James N Blaza / Luke C M Mackinder / 要旨: CO fixation is commonly limited by inefficiency of the CO-fixing enzyme Rubisco. Eukaryotic algae concentrate and fix CO in phase-separated condensates called pyrenoids, which complete up to one- ...CO fixation is commonly limited by inefficiency of the CO-fixing enzyme Rubisco. Eukaryotic algae concentrate and fix CO in phase-separated condensates called pyrenoids, which complete up to one-third of global CO fixation. Condensation of Rubisco in pyrenoids is dependent on interaction with disordered linker proteins that show little conservation between species. We developed a sequence-independent bioinformatic pipeline to identify linker proteins in green algae. We report the linker from Chlorella and demonstrate that it binds a conserved site on the Rubisco large subunit. We show that the Chlorella linker phase separates Chlamydomonas Rubisco and that despite their separation by ~800 million years of evolution, the Chlorella linker can support the formation of a functional pyrenoid in Chlamydomonas. This cross-species reactivity extends to plants, with the Chlorella linker able to drive condensation of some native plant Rubiscos in vitro and in planta. Our results represent an exciting frontier for pyrenoid engineering in plants, which is modelled to increase crop yields.
濃度: 0.3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Chlorella Rubisco at 0.3 mg/mL (0.5 micromolar) was mixed with the alpha3-alpha4 fragment at 16 micromolar and incubated for 10 minutes at room temperature before grid preparation.
試料支持
詳細: The pressure was not recorded / グリッドの材料: COPPER / グリッドのサイズ: 400 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3
急速凍結
装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 277.15 K / 詳細: Blot force -5, 8 s blot