Runaway selection: Females choose mates without the offering of obvious material benefits or parenting skills, and instead make their choices based on plumage color or courtship peahen may choose her peacock with long tail feather.

TLS Online TPP Program

#Id: 7878

#XL - Q Biochemistry

Crista junction

The connection between the inner boundary membrane and a crista

TLS Online TPP Program

#Id: 7879

#XL - Q Biochemistry

The curvature of the crista junctions is due to a protein complex called MICOS (mitochondrial contact site and cristae organizing system).

TLS Online TPP Program

#Id: 7880

#XL - Q Biochemistry

MICOS has an integral membrane protein subunit that homo-oligomerizes and bends the inner membrane to produce high curvature.

TLS Online TPP Program

#Id: 7881

#XL - Q Biochemistry

MICOS mediates close juxtaposition of the outer membrane and inner membrane by binding to outer membrane–associated proteins

TLS Online TPP Program

#Id: 7882

#XL - Q Biochemistry

The binding partners for MICOS in the outer membrane are Tom and SAM protein complexes, (involved in import of proteins into the mitochondria). 

TLS Online TPP Program

#Id: 7883

#XL - Q Biochemistry

MICOS function as a diffusion barrier to prevent mixing of the distinct proteins and lipids in the boundary membrane and crista membranes.