Copyright

What transport proteins occur in the inner mitochondrial membrane? In the outer mitochondrial...

Question:

What transport proteins occur in the inner mitochondrial membrane? In the outer mitochondrial membrane?

Proteins:

Proteins are essential molecules required for various functions in the body, such as hormonal activity, import and export of substances to and from the cell, and catalyzing chemical reactions. Some of the amino acids building up the proteins are synthesized in the body.

Answer and Explanation: 1

The following transport proteins are present in the inner mitochondrial membrane:

  1. TIM complex (translocase of the inner membrane): They are responsible for transporting protein into the matrix via the inner mitochondrial membrane.
  2. OXA (oxidase assembly) complex: They facilitate the proteins synthesized in the matrix and insert them in the inner mitochondrial complex.
  3. ANT (adenine nucleotide translocase): This transporter is responsible for transporting the synthesized ATP (in mitochondria) to the cytoplasm.
  4. MCU (mitochondrial calcium uniporter): This transporter helps the mitochondrial matrix in uptaking the electrophoretic calcium ion.

The following transport proteins are present in the outer mitochondrial membrane:

  1. TOM complex (translocase of outer membrane): This is responsible for recognizing precursor proteins by the receptors on the mitochondrial membrane and translocation of proteins across the outer membrane.
  2. Voltage-dependent anion channel: These proteins facilitate or mediate the exit of ATP and other molecules from mitochondria.

Learn more about this topic:

Loading...
Mitochondria: Structure & Function

from

Chapter 3 / Lesson 6

Learn about mitochondria, the powerhouses of the cell. Explore mitochondria function, structure, and definition, and find out what exactly the mitochondria does.


Related to this Question

Explore our homework questions and answers library