Table II. “Molecular Function” Gene Ontology enrichment results for proteins detected in each intestinal compartment, relative to all detected proteins.

Compartment	Gene Ontology Number	GO term annotation	Enrichment p value
Pseudo-coelomic fluid (PF)	GO:0004867	Serine-type endopeptidase inhibitor activity	6.00E-08
	GO:0005319	Lipid transporter activity	4.30E-04
	GO:0003755	Peptidyl-prolyl cis-trans isomerase activity	9.70E-04
Intestinal tissue (IT)	GO:0003735	Structural constituent of ribosome	2.20E-06
Integral intestinal membrane (IIM)	GO:0016758	Transferase activity, transferring hexosyl groups	1.50E-05
Peripheral intestinal membrane (PIM)	GO:0046961	Proton-transporting ATPase activity, rotational mechanism	1.07E-05
	GO:0046933	Hydrogen ion transporting ATP synthase activity, rotational	1.66E-04
	GO:0005544	Calcium-dependent phospholipid binding	2.99E-04
	GO:0030170	Pyridoxal phosphate binding	5.91E-04
	GO:0004075	Biotin carboxylase activity	7.71E-04
Intestinal lumen (IL)	GO:0004190	Aspartic-type endopeptidase activity	6.30E-05
	GO:0008237	Metallopeptidase activity	8.70E-05
	GO:0004553	Hydrolase activity, O-glycosyl compounds	1.40E-04