MIMG101%20Lecture%2012%20Nitrogen%20Assimilation%20Overheads

MIMG101%20Lecture%2012%20Nitrogen%20Assimilation%20Overheads...

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OUTLINE MIMG101 Nitrogen Assimilation • Oxidation States of N-compounds • Nitrogen Fixation • Isolating N2 Fixers • Nitrogenase • Nitrogen Utilization • Nitrification • Denitrification
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NH3 + NH 2 OH N 2 N 2 O NO NO 2 - NO 3 - NH 3 = R-NH 2 = AA CMP Oxidation State -3 -1 0 + 1 + 2 + 3 + 5 N2 Fixation Oxidation States of Nitrogen 90% of N is Biol. Inaccessible! Accessible Accessible
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NH3 + NH 2 OH N 2 N 2 O NO NO 2 - NO 3 - NH 3 = R-NH 2 = AA CMP Oxidation State -3 -1 0 + 1 + 2 + 3 + 5 e- e- N2 Fixation Gas = “lost” to atmosphere
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Unformatted text preview: (Denitrification) Oxidation States of Nitrogen NADH + O 2 H2O + e-pmf/NRG 90% of N is Biol. Inaccessible! AMO NH3 + NH 2 OH N 2 N 2 O NO NO 2-NO 3-NH 3 = R-NH 2 = AA CMP Oxidation State- 3- 1 + 1 + 2 + 3 + 5 e-e-e-e-e-e-N2 Fixation Gas = lost to atmosphere (Denitrification) Oxidation States of Nitrogen NADH + O 2 H2O + e-pmf/NRG 90% of N is Biol. Inaccessible! AMO...
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MIMG101%20Lecture%2012%20Nitrogen%20Assimilation%20Overheads...

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