Name: Caulobacter mirabilis Abraham et al. 2008

Category: Species

Proposed as: sp. nov.

Etymology: mi.ra’bi.lis. L. masc. adj. mirabilis, strange, the strange Caulobacter which is unique in its high content of trans-11-methyl-12-octadecenoic acid

Pronunciation (Latin), gender: ka͡u-lo-BAK-ter mi-RA-bi-lis, masculine

Type strain: CCUG 55073; DSM 21795; FWC 38; LMG 24261

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ227774 Analyse FASTA

Valid publication: Abraham WR, Macedo AJ, Lunsdorf H, Fischer R, Pawelczyk S, Smit J, Vancanneyt M. Phylogeny by a polyphasic approach of the order Caulobacterales, proposal of Caulobacter mirabilis sp. nov., Phenylobacterium haematophilum sp. nov. and Phenylobacterium conjunctum sp. nov., and emendation of the genus Phenylobacterium. Int J Syst Evol Microbiol 2008; 58:1939-1949. 🇩🇪

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 58, part 8 of the IJSEM. Int J Syst Evol Microbiol 2008; 58:2473-2474.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Hördt et al. 2020 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. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • 😷 The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 7 times in PubMed until 2026-06-11.

Parent taxon: Caulobacter Henrici and Johnson 1935 (Approved Lists 1980)

Assigned by: Abraham WR, Macedo AJ, Lunsdorf H, Fischer R, Pawelczyk S, Smit J, Vancanneyt M. Phylogeny by a polyphasic approach of the order Caulobacterales, proposal of Caulobacter mirabilis sp. nov., Phenylobacterium haematophilum sp. nov. and Phenylobacterium conjunctum sp. nov., and emendation of the genus Phenylobacterium. Int J Syst Evol Microbiol 2008; 58:1939-1949. 🇩🇪

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Record number: 787486