Target intelligence / Profile preview

Mitochondrial Respiratory Chain Complex III (Complex III)

Target
Complex III
Molecular classification
Enzyme, Multi-subunit enzyme, Respiratory chain complex
01

Overview

Mitochondrial respiratory chain complex III, also known as cytochrome bc1 complex or coenzyme Q – cytochrome c reductase, is a critical multi-subunit enzyme embedded in the inner mitochondrial membrane. It facilitates electron transfer from ubiquinol to cytochrome c, contributing to the generation of a proton gradient used for ATP synthesis. It's a central component of the electron transport chain and is involved in supercomplex formation, ROS generation, and oxygen sensing.

Other names
Cytochrome bc1 complexCoenzyme Q – cytochrome c reductaseUbiquinol-cytochrome c reductase
02

Biological functions

Electron transportProton pumpingATP synthesisReactive oxygen species generationOxygen sensingCellular respiration
03

Disease associations

Mitochondrial diseaseNeurodegenerative diseaseCardiovascular diseaseCancerHypoxia
04

Safety considerations

Potential for increased ROS productionComplex assembly disruptionCombined deficiencies affecting other respiratory complexes

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