Table 1. Phylogenetic distribution of annotated animal-like signaling and cell adhesion components within Choanozoa.

		Ichthyosporea		Filasterea		Choanoflagellata
	GO annotation	Amoebium paraciticum	Sphaeroforma arctica	Capsaspora owczarzaki	Ministeria vibrans	Monosiga brevicollis	Monosiga ovata
Hedgehog signaling	Hedgehog				•	•	•
	Hyperplastic discs homolog				•
Receptor tyrosine kinase signaling	Ros/insulin family				•
	Fibroblast growth factor					•	•
	Ephrin type-A receptor						•
	Ephrin type-B receptor						•
Non-receptor tyrosine kinase signaling	Abl tyrosine kinase					•
	Shark			•
Notch signaling	Notch		•		•	•
	Delta				•
	ADAM 10				•
Cell contact and adhesion proteins	Integrin-beta				•
	Crumbs				•
	Caveolin-1						•
	Focal adhesion kinase 1			•	•	•	•
	Cadherin				•
	ADAMTS			•
	Selectin			•
	Tetraspanin			•
	Sushi						•
	SHC					•	•
ECM molecules and receptors	40S ribosomal protein SA				•