Ultrafast and accurate 16S rRNA microbial community analysis using Kraken 2

Microbiome

Table 1 16S rRNA databases used for the metataxonomic classifiers in this study

Database	Version	Release date	Sequences	Domains	Phyla	Classes	Orders	Family	Genera	Species
Greengenes	13_8	August 15, 2013	203,452	2	89	248	404	513	2102	2952
SILVA	132	December 13, 2017	695,171	5	228	514	1277	1531	9379	-
RDP	11.5	September 30, 2016	3,356,808	2	60	99	154	384	2466	-

For each of the most recently released versions of three 16S rRNA databases, this table describes the total number of sequences and the number of “traditional” nodes represented in their respective taxonomies. The Greengenes numbers refer to the 99% OTU database, and the SILVA values reflect the Ref NR 99 database

ISSN: 2049-2618