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Chapitre 19

Mitochondrie et production d'énergie

La mitochondrie
La mitochondrie
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary ...
Membranes mitochondriales
Membranes mitochondriales
A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many ...
La membrane mitochondriale interne
La membrane mitochondriale interne
The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane ...
Le cycle de Krebs : vue d'ensemble
Le cycle de Krebs : vue d'ensemble
In aerobic organisms, the citric acid cycle is the second stage of cellular respiration wherein molecules derived from the breakdown of carbohydrates, ...
Le cycle de Krebs : résultat
Le cycle de Krebs : résultat
The citric acid cycle is termed an amphibolic pathway as it operates both anabolically and catabolically. The cyclic reactions balance the flux of the ...
Chaine respiratoire : complexe I et II
Chaine respiratoire : complexe I et II
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce ...
Chaine respiratoire : complexe III et IV
Chaine respiratoire : complexe III et IV
During the electron transport chain, electrons from NADH and FADH2 are first transferred to complexes I and II, respectively. These two complexes then ...
ATP synthase : mécanisme
ATP synthase : mécanisme
In animals, the mitochondrial F1F0 ATP synthase is the key protein that synthesizes ATP molecules through a complex catalytic mechanism. While the nuclear ...
La chaine respiratoire
La chaine respiratoire
The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is ...
Les super-complexes des crêtes mitochondriales
Les super-complexes des crêtes mitochondriales
The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through ...
ATP synthase : structure
ATP synthase : structure
ATP synthase or ATPase is among the most conserved proteins found in bacteria, mammals, and plants. This enzyme can catalyze a forward reaction in ...
Transporteur ADP/ ATP
Transporteur ADP/ ATP
ADP/ATP carrier or AAC protein is the most abundant carrier protein in the inner mitochondrial membrane. It transports large quantities of ADP and ATP, ...
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