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Table 2 Distribution of reads, unique sequences, OTUs and shared microbiome (sequences and OTUs) per phylum.

From: Defining the healthy "core microbiome" of oral microbial communities

Phylum Number of Reads (% of all)a Unique Sequences (% of all)a Number of Shared Sequencesb % of Reads with Shared Sequences Number of OTUs (% of all)c Number of Shared OTUsd % of Reads with Shared OTUs
Actinobacteria 73092 (25%) 1541 (24%) 520 20% 194 (24%) 94 24%
Bacteroidetes 32666 (11%) 748 (12%) 118 6% 132 (16%) 44 9%
Cyanobacteria 28 (0.01%) 4 (0.06%) 1 0.005% 3 (0.4%) 1 0.006%
Firmicutes 107711 (36%) 2283 (36%) 719 27% 230 (28%) 131 35%
Fusobacteria 14103 (5%) 233 (4%) 74 3% 37 (5%) 23 4%
Proteobacteria 65778 (22%) 1294 (20%) 212 12% 183 (22%) 77 20%
Spirochaetes 407 (0.1%) 18 (0.3%) 2 0.06% 8 (1%) 2 0.1%
TM7 3853 (1%) 127 (2%) 13 0.4% 14 (2%) 7 0.8%
Unclassified Bacteria 623 (0.2%) 67 (1%) 1 0.002% 17 (2%) 8 0.1%
Total 298261 (100%) 6315 (100%) 1660 66% 818 (100%) 387 93%
  1. a - sum of all samples of three individuals; only sequences that were present at least 5 times are included
  2. b - number of unique sequences that were common in all three microbiomes
  3. c - number of all OTUs (sequences that clustered at 3% genetic difference)
  4. d - number of OTUs (sequences clustered at 3% genetic difference) that were common in all three microbiomes