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Mitochondrial ATP synthase: architecture, function and pathology

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TLDR
Questions remain to be answered regarding the structure of subunits, the function of the rotary nanomotor at a molecular level, and the human complex V assembly process, which will guide physio(patho)logical studies, paving the way for future therapeutic interventions.
Abstract
Human mitochondrial (mt) ATP synthase, or complex V consists of two functional domains: F1, situated in the mitochondrial matrix, and Fo, located in the inner mitochondrial membrane. Complex V uses the energy created by the proton electrochemical gradient to phosphorylate ADP to ATP. This review covers the architecture, function and assembly of complex V. The role of complex V di-and oligomerization and its relation with mitochondrial morphology is discussed. Finally, pathology related to complex V deficiency and current therapeutic strategies are highlighted. Despite the huge progress in this research field over the past decades, questions remain to be answered regarding the structure of subunits, the function of the rotary nanomotor at a molecular level, and the human complex V assembly process. The elucidation of more nuclear genetic defects will guide physio(patho)logical studies, paving the way for future therapeutic interventions.

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Assessment of mitochondrial respiratory chain enzymatic activities on tissues and cultured cells

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Physiological and Pathological Roles of the Mitochondrial Permeability Transition Pore in the Heart

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Mitochondrial Dysfunction and Biogenesis in Neurodegenerative diseases: Pathogenesis and Treatment.

TL;DR: The purpose of this review was to present the current status of the knowledge and understanding of the involvement of mitochondrial dysfunction in pathogenesis of neurodegenerative diseases including Alzheimer's disease, Parkinson's disease (PD), Huntington’s disease (HD), and amyotrophic lateral sclerosis (ALS) and the importance of mitochondrial biogenesis as a potential novel therapeutic target for their treatment.
References
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Journal ArticleDOI

Sequence and organization of the human mitochondrial genome

TL;DR: The complete sequence of the 16,569-base pair human mitochondrial genome is presented and shows extreme economy in that the genes have none or only a few noncoding bases between them, and in many cases the termination codons are not coded in the DNA but are created post-transcriptionally by polyadenylation of the mRNAs.
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A Mitochondrial Paradigm of Metabolic and Degenerative Diseases, Aging, and Cancer: A Dawn for Evolutionary Medicine

TL;DR: The mitochondria provide a direct link between the authors' environment and their genes and the mtDNA variants that permitted their forbears to energetically adapt to their ancestral homes are influencing their health today.
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Blue native electrophoresis for isolation of membrane protein complexes in enzymatically active form.

TL;DR: The percentage recovery of functional activity depended on the respective protein complex studied and was zero for some complexes, but almost quantitative for others, and the recovery of all respiratory chain complexes was almost quantitative.
Journal ArticleDOI

The ATP Synthase—A Splendid Molecular Machine

TL;DR: An X-ray structure of the F1 portion of the mitochondrial ATP synthase shows asymmetry and differences in nucleotide binding of the catalytic beta subunits that support the binding change mechanism with an internal rotation of the gamma subunit.
Journal ArticleDOI

A microspectrophotometric method for the determination of cytochrome oxidase.

TL;DR: A microadaptation enables the measurement of the cytochrome oxidase content of as little as 4 y (wet weight) of an active tissue such as heart.
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What is the role of complex V for ETC?

Complex V, or mitochondrial ATP synthase, phosphorylates ADP to ATP using the proton electrochemical gradient energy in the Electron Transport Chain (ETC), contributing to cellular energy production.