Prokaryotic Nomenclature Up-to-Date (PNU) was a compilation of all names of Bacteria and Archaea which have been validly published according to the Bacteriological Code since
1. Jan. 1980, and nomenclatural changes which have been validly published since. It was updated with the publication of each new issue of the International Journal of Systematic and Evolutionary Microbiology (IJSEM). In February 2020 PNU the List of Prokaryotic names with Standing in Nomenclature (LPSN) was transferred to DSMZ. The new LPSN established at DSMZ superseded PNU.
The new LPSN page offers hierarchical and alphabetic browsing of prokaryotic names and has an advanced search facility. Alternatively, you may go to LPSN Downloads and select one of the lists in CSV or Excel format. Additionally, content can be retrieved in machine readable JSON format by the LPSN web service (API).
For citing LPSN please see the LPSN page. PNU is not updated any longer. If you used the previous PNU Excel or PDF download or the previous PNU API, please cite it as: Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH, Germany, Prokaryotic Nomenclature Up-to-date [month and year of the last update].
A more detailed overview of the mechanisms of valid publication of a name according to the Bacteriological Code can be found at LPSN, see also taxonomy & systematics and deposit of a proposed type strain.
The Approved Lists (Skerman et al., 1980) contain more than 2200 names at the genus level and below and 124 names of higher taxa. Validation Lists and taxon descriptions in the IJSB/IJSEM have been published regularly since. The total number of validly published names of prokaryotes increased considerably since then, see LPSN.
Skerman, V.B.D., McGowan, V. & Sneath, P.H.A. (1989). Approved Lists of Bacterial Names. Amended edition. American Society for Microbiology, Washington.
Below you will find several useful links concerning prokaryotic taxonomy:
Prokaryotic Nomenclature Up-to-Date was established at the DSMZ by Norbert Weiss, Manfred Kracht and Dorothea Gleim. After transferring LPSN to DSMZ, LPSN replaced PNU and is now maintained by Privatdozent Dr. Markus Göker and a team of assistants and computer scientists. For any issues regarding content or technical aspects contact us. List of Prokaryotic names with Standing in Nomenclature and Prokaryotic Nomenclature up-to-date are published by the Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH. The DSMZ accepts no responsibility for any errors.