RuBisCO, short for ribulose-1,5-bisphosphate carboxylase/oxygenase, is an enzyme that plays a crucial role in the process of photosynthesis, specifically during the Calvin cycle. This enzyme catalyzes the first major step of carbon fixation, which is essential for converting inorganic carbon dioxide into organic molecules like glucose that plants can use for energy. RuBisCO is often considered the most abundant protein on Earth, highlighting its importance in supporting life by driving the global carbon cycle.
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