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Mitochondrial biogenesis is the process by which cells increase mitochondrial numbers. [1] [2] It was first described by John Holloszy in the 1960s, when it was discovered that physical endurance training induced higher mitochondrial content levels, leading to greater glucose uptake by muscles. [3]
The human mitochondrial genome is the entirety of hereditary information contained in human mitochondria. Mitochondria are small structures in cells that generate energy for the cell to use, and are hence referred to as the "powerhouses" of the cell. Mitochondrial DNA (mtDNA) is not transmitted through nuclear DNA (nDNA).
PGC-1α provides a direct link between external physiological stimuli and the regulation of mitochondrial biogenesis, and is a major factor causing slow-twitch rather than fast-twitch muscle fiber types. [10] Endurance exercise has been shown to activate the PGC-1α gene in human skeletal muscle. [11]
The outer membrane mitochondrial proteins carry out functions for mitochondrial biogenesis and integration between mitochondria and the cellular system. The outer membrane consists of two types of integral proteins, including proteins with transmembrane β-barrel and proteins with one or more α-helical membrane anchors.
21780 Ensembl ENSG00000108064 ENSMUSG00000003923 UniProt Q00059 P40630 RefSeq (mRNA) NM_001270782 NM_003201 NM_012251 NM_009360 RefSeq (protein) NP_001257711 NP_003192 NP_033386 Location (UCSC) Chr 10: 58.39 – 58.4 Mb Chr 10: 71.06 – 71.07 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Mitochondrial transcription factor A, abbreviated as TFAM or mtTFA, is a protein that in ...
Mitogens can be either endogenous or exogenous factors. Endogenous mitogens function to control cell division is a normal and necessary part of the life cycle of multicellular organisms.
MT-ND1 is located in mitochondrial DNA from base pair 3,307 to 4,262. [5] The MT-ND1 gene produces a 36 kDa protein composed of 318 amino acids. [10] [11] MT-ND1 is one of seven mitochondrial genes encoding subunits of the enzyme NADH dehydrogenase (ubiquinone), together with MT-ND2, MT-ND3, MT-ND4, MT-ND4L, MT-ND5, and MT-ND6.
Mitophagy is the selective degradation of mitochondria by autophagy.It often occurs to defective mitochondria following damage or stress. The process of mitophagy was first described in 1915 by Margaret Reed Lewis and Warren Harmon Lewis. [1]