Name: Nitrobacter hamburgensis Bock et al. 2001

Category: Species

Proposed as: sp. nov.

Etymology: ham.burg.en’sis. N.L. masc./fem. adj. hamburgensis, pertaining to the city of Hamburg, Federal Republic of Germany, where the organism was first isolated

Gender: masculine

Type strain: DSM 10229; NCIMB 13809; X14

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: L11663 Analyse FASTA

Effective publication: Bock E, Sundermeyer-Klinger H, Stackebrandt E. New facultative lithoautotrophic nitrite-oxidizing bacteria. Arch. Microbiol. 1983; 136:281-284.

IJSEM list: Anonymous. Validation list no. 78. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2001; 51:1-2.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.11099 (N = 7).
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 21 times in PubMed until 2024-03-28.
  • 🧍 The phylogenetic position of this species was determined in a genome-scale analysis by Hördt et al. (2020). Publication: Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468.
  • 🧍 According to Rules 27(3) and 30, this name is not validly published, because the original publication makes reference to the deposit of the type strain in a single recognized culture collection. However, according to the Judicial Opinion 81, Nitrobacter hamburgensis Bock et al. 2001 is considered to be validly published, since deposit in a second culture collection in a different country has been documented. Publication: Euzeby JP, Tindall BJ. Status of strains that contravene Rules 27(3) and 30 of the Bacteriological Code. Request for an opinion. Int J Syst Evol Microbiol 2004; 54:293-301.
  • 🧍 The type strain DSM 10229 has been designated by E. Spieck in a personal communication to the Associate Editor, IJSEM. Publication: Anonymous. Validation list no. 78. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2001; 51:1-2.

Parent taxon: Nitrobacter Winogradsky 1892 (Approved Lists 1980)

Assigned by: Bock E, Sundermeyer-Klinger H, Stackebrandt E. New facultative lithoautotrophic nitrite-oxidizing bacteria. Arch. Microbiol. 1983; 136:281-284.

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Record number: 778672