The enzyme which fixes CO_2 in C_4 plants is | vedclass

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Question

(B) In $C_4$ plants,the primary $CO_2$ fixation occurs in the mesophyll cells.$CO_2$ is initially accepted by a $3$-carbon compound called Phosphoenol

Vedclass · Accepted Answer

$PEP$ carboxylase

Vedclass · Answer

(B) In $C_4$ plants,the primary $CO_2$ fixation occurs in the mesophyll cells.$CO_2$ is initially accepted by a $3$-carbon compound called Phosphoenolpyruvate $(PEP)$.The enzyme responsible for this carboxylation reaction is $PEP$ carboxylase (also known as $PEPCase$).This reaction results in the formation of a $4$-carbon compound,Oxaloacetic acid $(OAA)$,which is why these plants are called $C_4$ plants.While $RuBP$ carboxylase $(RuBisCO)$ is also present in $C_4$ plants,it functions in the bundle sheath cells during the Calvin cycle,not for the initial fixation of atmospheric $CO_2$.

The enzyme which fixes $CO_2$ in $C_4$ plants is

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