In C4 plants, carboxylation is twice, it can be represented as
Pyruvic acid + CO2 malic acid + CO2
RUDP + CO2 and pyruvic acid + CO2
PEPA + CO2 and RUDP + CO2
PEPA + CO2 and malic acid + CO2
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In C4 plants, carboxylation is twice, it can be represented as