Greengenes Expert Database

Greengenes is a full-length 16S rRNA gene database that provides a curated taxonomy based on de novo tree inference.


  • 1,012,870 distinct sequences from 92,685 organisms contributed to RNAcentral
  • the shortest sequence has 1,253 nucleotides, the longest 2,368
  • the average length is 1,402 nucleotides

Example entries

URS00003D0087, URS00006DE01B, URS00004DD3DC

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An improved Greengenes taxonomy with explicit ranks for ecological and evolutionary analyses of bacteria and archaea.
McDonald D, Price MN, Goodrich J, Nawrocki EP, DeSantis TZ, Probst A, Andersen GL, Knight R, Hugenholtz P ISME J. 2012 Mar;6(3):610-8

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