Figure 2. Comparing the Abundance of symbiont and host proteins recovered from Guaymas and East Pacific Rise (EPR) Riftia pachyptila.

The categories along the x-axes refer to general or specific physiological processes. “rTCA” refers to reductive Tricarboxylic Acid cycle, and “CBB” refers to the Calvin Benson Bassham cycle. “Peptide abundances” refers to the number of peptides allied to qualified proteins associated with each process. “Qualified proteins” refers to those proteins that met the requisite criteria (see methods). Symbiont proteins were evaluated against the total, identified symbiont proteins, host hemoglobin against host proteins, and total host proteins against the sum of both host and symbiont proteins. A) Percentage of peptides, allied with the physiological processes shown on the x-axis, relative to all proteins categorized by C.O.G. as allied to “energy metabolism”, B) Percentage of qualified symbiont protein associated with each category, C) Absolute number of peptides associated with each category, D) Percentage of qualified host protein allied to the host proteome, or specifically hemoglobin, and E) Absolute number of peptides allied to the host proteome, or specifically hemoglobin. Lists of proteins quantified for metabolic categories can be found in Table S1. * = Thiosulfate plotted on secondary axis.