FIG 6.

Diversity and distribution of marine bacteria containing d-Ala aminotransferase genes. (A) Statistical analysis of marine bacteria containing TraA-like sequences from the marine bacterial genomes of the IMG/JGI database. (B) Relative percentage abundances of TraA-like sequences and microbial community composition of Tara samples retrieved from the Tara Oceans Microbiome databases. Tara samples were divided into two groups, Tara-Surface (5 to 188 m) and Tara-Deep (250 to 1,000 m). (C) Environmental distribution of predicted TraA-like sequences of Proteobacteria from the Tara Oceans Microbiome databases. Stations were plotted using Surfer version 12 (Golden Software LLC, USA) (38).