Phosphoenolpyruvate carboxylase (PEPC) is a crucial enzyme involved in the process of carbon fixation in plants, algae, and some bacteria. It catalyzes the reversible carboxylation of phosphoenolpyruvate (PEP) to form oxaloacetate (OAA), utilizing bicarbonate (HCO3-) as the carbon source. This reaction plays a significant role in the Calvin cycle, a series of biochemical reactions that convert carbon dioxide into organic compounds, such as glucose, in photosynthetic organisms. PEPC is also involved in anaplerotic reactions, which replenish the intermediates of the tricarboxylic acid (TCA) cycle, and it contributes to the regulation of pH in plant cells. The enzyme's activity is regulated by various factors, including pH, malate, and PEP concentrations, making it a key component in the metabolic pathways of plants and other organisms that rely on carbon fixation.
The CAS Registry Mumber 9013-08-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,1 and 3 respectively; the second part has 2 digits, 0 and 8 respectively. Calculate Digit Verification of CAS Registry Number 9013-08: (6*9)+(5*0)+(4*1)+(3*3)+(2*0)+(1*8)=75 75 % 10 = 5 So 9013-08-5 is a valid CAS Registry Number.
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