Supplement to: Horn, Hannes; Slaby, Beate M; Jahn, Martin T; Bayer, Kristina; Moitinho-Silva, Lucas; Förster, Frank; Abdelmohsen, Usama Ramadan; Hentschel, Ute (2016): An Enrichment of CRISPR and Other Defense-Related Features in Marine Sponge-Associated Microbial Metagenomes. Frontiers in Microbiology, 7:1751, https://doi.org/10.3389/fmicb.2016.01751