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310019
Biological Oxidation and Hydrogen Transfer Systems
Descrição
Topic 3 - Metabolism Mapa Mental sobre Biological Oxidation and Hydrogen Transfer Systems, criado por kathrynmoar em 28-10-2013.
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topic 3 - metabolism
topic 3 - metabolism
Mapa Mental por
kathrynmoar
, atualizado more than 1 year ago
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Criado por
kathrynmoar
mais de 10 anos atrás
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Resumo de Recurso
Biological Oxidation and Hydrogen Transfer Systems
Oxidation: may or may not involve molecular oxygen.
removal of an electron from a metal
Fe2+ -> Fe3+ + e-
removal of electrons plus protons from a hydrogenated compound
AH2 -> A + 2e- + 2H+
electrons must be transferred to an electron acceptor
NAD+
initial electron acceptor
full name: nicotinamide adenine dinucleotide
bases are adenine and nicotinamide
oxidation and reduction is undertaken by nicotinamide
base-sugar-phosphate-phosphate-sugar-base
can accept two electrons plus a protein as a hydride ion
co-enzyme for a number of dehydrogenases
FAD and FMN
also electrons carriers
FAD = flavin adenine dinucleotide
FAD is permanently attached to its proenzyme - it is a prosthetic group.
Main phases of glucose oxidation
oxidation of glucose = delta G of 2820 kJ mol
oxidation results in 30 ATP being produced
fiirst phase = glycolysis where two C3 fragments are produced.
second phase = C3 fragments are oxidised to carbon dioxide and water
third phase = energy from re-oxidation of reduced carries is used to generate ATP
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