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biolove biolove
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13 years ago
What is leghemoglobin Question Mark
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13 years ago
This is an oxygen carrier and heme protein synthesized by leguminous plants found in nitrogen fixing nodules in the roots. It is yellow in colour and often occurs in the central region of the nodule to product the rhizobium from oxygen exposure. Nitrogenase is very sensitive to oxygen exposure.

Bio_man 8)
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13 years ago
The oxygen carrier leghemoglobin is a hemoprotein found in leguminous plants. In plants with nitrogen fixing bacteria (such as alfalfa or soybeans), the presence of oxygen will poison the bacterium. Leghemoglobin acts as a natural defense against oxygen toxicity by scavenging free oxygen in these systems. The protein itself is a product of both the plant and the bacterium; the apoprotein is produced by the plant and the heme by the bacterium.
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