Crista

Cell biology
mitochondrion
Components of a typical mitochondrion

1 Outer membrane

1.1 Porin

2 Intermembrane space

2.1 Intracristal space
2.2 Peripheral space

3 Lamella

3.1 Inner membrane
3.11 Inner boundary membrane
3.12 Cristal membrane
3.2 Matrix
3.3 Cristae   ◄ You are here

4 Mitochondrial DNA
5 Matrix granule
6 Mitochondrial ribosome
7 ATP synthase


A crista (/ˈkrɪstə/; pl.: cristae) is a fold in the inner membrane of a mitochondrion. Cristae give the inner membrane its characteristic wrinkled shape, providing a large amount of surface area for biochemical reactions, especially oxidative phosphorylation to occur on. Cristae are studded with proteins, including ATP synthase and a variety of cytochromes.

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