Homo-Oligomerisation in Signal Transduction: Dynamics, Homeostasis, Ultrasensitivity, Bistability.

•Homo-oligomerisation may offer an unexpected variety of signal processing functions.•These include: dynamic signal encoding via oligomeric complex size.•Homeostatic regulation of monomer concentration.•Bistability via pseudo-multisite modification and multi-enzyme regulation.•The findings partly explain why homo-oligomerisation is so commonly found in evolution.