Remove a phosphate from its ligand

Add a phosphate to its ligand

Change the structure of its ligand

Add an ubiquitin to its ligand

Molecules and ions outside the cell are selected to enter the cell via active or passive transport through the phospholipid bilayer

Molecules and ions can pass freely through the phospholipid bilayer

Molecules and ions are always kept to the exterior of the phospholipid bilayer

Polarization of the cell membrane allows for no entrance of foreign molecules or ions

Polarization of the cell membrane allows for passive transport of all foreign molecules or ions

Cytoplasm (Cytosol)

Mitochondrial matrix

Inner mitochondrial membrane

Golgi apparatus

Intermembrane space

They are primarily found in endocrine tissues.

They converge at desmosomes and hemidesmosomes.

They are primarily made of kertain tonofilaments.

The protein filaggrin is thought to hold them together.

They are most typically anchored to the cytoskeleton.

Add an ubiquitin to its ligand

Remove an ubiquitin from its ligand

Add a phosphate to its ligand

Remove a phosphate from its ligand

Add phosphates to ligands

Remove phosphates from ligands

Change the structure of the ligand

Add ubiquitin to the ligand