Table 1.

Number of proteins identified in Prochlorococcus cells and vesicles.

Strain	Annotated proteins encoded in genomes (Uniprot)	Annotated proteins shared by both genomes	Proteins detected in cells a	Proteins detected in cells of both strains	Proteins detected in vesicles	Proteins detected only in vesicles and not in cells	Proteins detected in vesicles from both strains
MIT9312	1964	1532	1030	714	224	17	111
MIT9313	2830		1055		355	41

^a These values reflect the data gathered for the trypsin/Lys‐C digestion of Prochlorococcus cells and vesicles (Supporting Information Tables S2 and S3); not included here, additional cellular proteins were identified using Glu‐C digestion.