握手的束缚：早期陆地植物Rubisco中的连接模块增强碳同化

A linker moiety built into the enzyme Rubisco in an early land plant boosts carbon assimilation Moritz T. Meyer1 and Howard Griffiths2 R ubisco—or ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO)—is the basis of Earth’s life support system (1). Found in all green plants, algae, and cyanobacteria, this enzyme converts inorganic carbon dioxide (CO2) to organic carbon during photosynthesis. As such, it has shaped past and present climates and provides food and energy for the world’s bur-geoning populations. In aquatic environments, dissolved CO2 is usually scarce, and to compensate, diverse CO2-concentrating mechanisms have evolved to corral Rubisco into efficient working clusters. In cyanobac-teria, Rubisco is encapsulated by proteinaceous shells called carboxy-somes (2). In algae, it is packaged into pyrenoids, which are liquid-like organelles (3). …