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. 2015 Jun 24;10(6):e0131498. doi: 10.1371/journal.pone.0131498

Table 3. The best and lowest similarity thresholds for taxonomic resolution.

Sequences V regions The best similarity thresholds/success (%) The lowest similarity thresholds/accuracy (%)*
S/G G/F F/O O/I Intra-species Intra-genus Intra-family Intra-order
Nearly-whole-length V1-9 99.9/93 98.4/64 94.2/86 90.2/81 100/97 100/100 97/96 93/96
Section 1 V1-3 99.4/63 95.4/82 90.6/82 98/95 93/96
Section 2 V4-5 99.7/66 97.8/67 92.6/83 88.6/78 100/99 97/96 92/95
Section 3 V7 99.3/82 94.6/73 89.9/68 86.0/68 100/96 96/97 91/96
Section 4 V8 99.8/62 95.7/89 90.6/68 98/96 95/97
Section 5 V9 99.3/67 96.6/79 90.2/78 83.2/77 100/95 96/96 90/96

* 95% is the lowest accuracy accepted in this case.