Fig. 5.

Expression and abundance of GHs in MAST-4A/B/C/E in the upper global ocean. (A) Geographic location of the metagenomic and metatranscriptomic samples from Tara Oceans. (B) Gene abundance versus expression using normalized data for each gene and station. Note that the axes have different but proportional ranges of values. (C) Heatmap of the GH families in MAST-4 that had the highest expression. Samples are in the x-axis, grouped by ocean region and ordered following the expedition’s trajectory. Genes in the y-axis are organized by family, and each species is indicated with a color. GH22, GH23, and GH24 are families of lysozymes, and GH19 is a family of chitinases that can also act as lysozyme in some organisms.