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Concept information

Cells > Cellular Structures > Subcellular Fractions > Mitochondria
... > Cells > Cellular Structures > Intracellular Space > Cytoplasm > Cytoplasmic Structures > Organelles > Mitochondria
... > Fluids and Secretions > Body Fluids > Body Fluid Compartments > Intracellular Space > Cytoplasm > Cytoplasmic Structures > Organelles > Mitochondria
... > Tissues > Body Fluid Compartments > Intracellular Space > Cytoplasm > Cytoplasmic Structures > Organelles > Mitochondria

Terme préférentiel

Mitochondria  

Type

  • mesh:Descriptor

Définition

  • Semiautonomous, self-reproducing organelles that occur in the cytoplasm of all cells of most, but not all, eukaryotes. Each mitochondrion is surrounded by a double limiting membrane. The inner membrane is highly invaginated, and its projections are called cristae. Mitochondria are the sites of the reactions of oxidative phosphorylation, which result in the formation of ATP. They contain distinctive RIBOSOMES, transfer RNAs (RNA, TRANSFER); AMINO ACYL T RNA SYNTHETASES; and elongation and termination factors. Mitochondria depend upon genes within the nucleus of the cells in which they reside for many essential messenger RNAs (RNA, MESSENGER). Mitochondria are believed to have arisen from aerobic bacteria that established a symbiotic relationship with primitive protoeukaryotes. (King & Stansfield, A Dictionary of Genetics, 4th ed)

Concept générique

Concepts spécifiques

Synonyme(s)

  • Mitochondrion

Qualificatif(s) autorisé(s)

Traductions

URI

http://data.loterre.fr/ark:/67375/JVR-D78ZZC1T-G

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RDF/XML TURTLE JSON-LD Date de création 01/01/1999, dernière modification le 09/07/2003