CHEM 153C Study Guide - Final Guide: Gnu Debugger, Oxidative Deamination, Enzyme

• School: UCLA
• Department: Chemistry and Biochemistry
• Course: CHEM 153C
• Professor: Weiss Richard

Document Summary

N2 converted to nh3 by bacteria (nitrogenase) No3 formed by oxidation of nh3 by nitrifying bacteria; other bacteria, plants and some fungi reduce. No3 to nh3 (nitrate reductase and nitrite reductase) nh3 incorporated into glutamate and glutamine; at low [nh3] this is accomplished by glutamine synthetase and glutamate synthase; at high. [nh3] this is accomplished by glutamate dehydrogenase and glutamine synthetase. Nh3 can also be assimilated by carbamoylpphosphate synthetase. The two major sources of organic nitrogen and the mechanisms involved in conversion of inorganic nitrogen sources to ammonia (ammonium): Sources of organic nitrogen: green plants, some fungi and bacteria. No3 + nadh + h+ ====(nitrite reductase)== (cid:0) Nad+ + h2o + no2 ====(8h+ + 6e-- nitrate. N2 + 8h+ + 8e- + 16atp ====(nitrogenase)== (cid:0) Nitrogenase catalyzes nitrogen fixation by the following reaction: N2 + 8h+ + 8e + 16atp + 16h2o > 2nh3 + h2 + 16adp + 16pi.