The Protist Ribosomal Reference database (PR2): a catalog of unicellular eukaryote Small Sub-Unit rRNA sequences with curated taxonomy

Laure Guillou, Dipankar Bachar, Stephane Audic, David Bass, Cedric Berney, Lucie Bittner, Christophe Boutte, Gaetan Burgaud, Colomban de Vargas, Johan Decelle, et al.