Fig. 5: Trichodesmium protein abundances across the TriCoLim transect.

A Protein abundance data sorted into Trichodesmium phylogenetic groups. Proteins were normalized across each sample, then sorted into the respective phylogenetic group and summed. Error bars indicate the standard deviation of the averaged biological replicates. Quantitation is displayed as normalized spectral counts (see “Methods”). Core and T. thiebautii proteins are much more abundant than those derived from T. erythraeum. B Protein abundance data sorted by biological function. Again, proteins were normalized across each sample, then sorted by COG function and summed. Selected, highly abundant functions are shown. C Summed normalized protein data for CRISPR-Cas and toxin/antitoxin proteins across the TriCoLim transect. D Nonsignificant correlation of CRISPR-Cas protein abundances versus T. thiebautii total protein abundance (p = 0.88).