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Defects of mitochondrial carriers that supply mitochondria with the substrates of oxidative phosphorylation, inorganic phosphate and ADP, are responsible for diseases characterized by defective energy production. [15] Residues involved in substrate binding in the middle of the transporter and gating have been identified and analyzed. [8]
Depiction of mitochondrial membranes. [1] Mitochondrial membrane transport proteins, also known as mitochondrial carrier proteins, are proteins which exist in the membranes of mitochondria. They serve to transport [2] molecules and other factors, such as ions, into or out of the organelles. Mitochondria contain both an inner and outer membrane ...
Adenine nucleotide translocator (ANT), also known as the ADP/ATP translocase (ANT), ADP/ATP carrier protein (AAC) or mitochondrial ADP/ATP carrier, exchanges free ATP with free ADP across the inner mitochondrial membrane. [1] [2] ANT is the most abundant protein in the inner mitochondrial membrane and belongs to the mitochondrial carrier family ...
The structure of the tricarboxylate transport protein is consistent with the structures of other mitochondrial carriers. [9] [10] [12] In particular, the tricarboxylate transport protein has a tripartite structure consisting of three repeated domains that are approximately 100 amino acids in length.
They also reduce the mitochondrial membrane potential in mammalian cells, which reduces production of reactive oxygen species (ROS). In contrast to UCP1 and UCP3, which are primarily expressed in adipose and smooth muscle, UCP2 is expressed on many different tissues [ 6 ] including the kidney, liver, GI tract, brain, and skeletal muscle.
The mitochondrial calcium uniporter (MCU) is a protein complex located in the inner mitochondrial matrix that functions to take up calcium ions (Ca2+) into the matrix from the cytoplasm. [20] The transport of calcium ions is specifically used in cellular function for regulating energy production in the mitochondria, cytosolic calcium signaling ...
The mobile cytochrome electron carrier in mitochondria is cytochrome c. Bacteria use a number of different mobile cytochrome electron carriers. Other cytochromes are found within macromolecules such as Complex III and Complex IV. They also function as electron carriers, but in a very different, intramolecular, solid-state environment.
Phosphate carrier protein, mitochondrial is a protein that in humans is encoded by the SLC25A3 gene. [ 5 ] [ 6 ] The encoded protein is a transmembrane protein located in the mitochondrial inner membrane and catalyzes the transport of phosphate ions across it for the purpose of oxidative phosphorylation .