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A respiratory chain located in the plasma membrane of a cell; made up of the protein complexes that form the mitochondrial electron transport system (the respiratory chain), associated with the plasma membrane. The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient. Any macromolecular complex composed of two or more polypeptide subunits, which may or may not be identical. Protein complexes may have other associated non-protein prosthetic groups, such as nucleotides, metal ions or other small molecules. Any constituent part of the plasma membrane, the membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient. A part of the respiratory chain located in the plasma membrane, containing the 13 polypeptide subunits of cytochrome c oxidase, including cytochrome a and cytochrome a3. Catalyzes the oxidation of reduced cytochrome c by dioxygen (O2). Examples of this component are found in Bacterial species. Any constituent part of the living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm. A part of the respiratory chain, containing the 13 polypeptide subunits of cytochrome c oxidase, including cytochrome a and cytochrome a3. Catalyzes the oxidation of reduced cytochrome c by dioxygen (O2). Any constituent part of a membrane, a double layer of lipid molecules that encloses all cells, and, in eukaryotes, many organelles; may be a single or double lipid bilayer; also includes associated proteins.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: plasma membrane respiratory chain complex IV
Acc: GO:0045278
Aspect: Cellular Component
Desc: A part of the respiratory chain located in the plasma membrane, containing the 13 polypeptide subunits of cytochrome c oxidase, including cytochrome a and cytochrome a3. Catalyzes the oxidation of reduced cytochrome c by dioxygen (O2). Examples of this component are found in Bacterial species.
Synonyms:
  • cytochrome c oxidase complex
  • GO:0045288
  • respiratory chain complex IV
Proteins in PDR annotated with:
   This term: 0
   Term or descendants: 0


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0045278 - plasma membrane respiratory chain complex IV (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle