The function of leghaemoglobin during N_2-fix | vedclass

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Question

(D) Leghaemoglobin $(LHb)$ is a red pigment found in the root nodules of leguminous plants. Nitrogenase,the enzyme responsible for $N_2$-fixation,is h

Vedclass · Accepted Answer

To protect nitrogenase from oxygen

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(D) Leghaemoglobin $(LHb)$ is a red pigment found in the root nodules of leguminous plants. Nitrogenase,the enzyme responsible for $N_2$-fixation,is highly sensitive to molecular oxygen $(O_2)$ and is inactivated by it. $LHb$ acts as an oxygen scavenger,binding to $O_2$ and maintaining a low oxygen concentration in the nodule environment. This protects the nitrogenase enzyme from the inhibitory effects of oxygen,allowing the fixation process to proceed efficiently.

The function of leghaemoglobin during $N_2$-fixation is

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