Drives the assembly of a protein into larger complexes.
Phosphate on <em>Ser, Thr,</em> or<em> Tyr.</em>

Helps to create histone code in chromatin through forming either mono-, di-, or tri-methyl lysine
Methyl on<em> Lys</em>

Helps to creates histone code in chromatin.
Acetyl on <em>Lysine</em>

This fatty acid addition drives protein association with membranes.
Palmityl grop on <em>Cys</em>

Controls enzyme activity and gene expression in glucose homeostasis.
N-acetylglucosamine on <em>Ser, </em>or<em> </em><i>Thr</i>

<question>
Monoubiquitin addition regulates the transport of membrane proteins in vesicles.

A polyubiquitin chain targets a protein for degradation.
</question>
Ubiquitin on <em>Lys</em>