Name: Williamsia deligens Yassin and Hupfer 2006

Category: Species

Proposed as: sp. nov.

Etymology: de.li.gens. L. part. adj. deligens, selecting, choosing, reffering to the preference of carbon source

Gender: feminine

Type strain: CCUG 50873; DSM 44902; IMMIB RIV-956; JCM 13662

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ920290 Analyse FASTA

Valid publication: Yassin AF, Hupfer H. Williamsia deligens sp. nov., isolated from human blood. Int J Syst Evol Microbiol 2006; 56:193-197.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 56, part 1 of the IJSEM. Int J Syst Evol Microbiol 2006; 56:679-680.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Nouioui et al. 2018 Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007. Oren A, Garrity GM. List of changes in taxonomic opinion no. 29. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2019; 69:13-32.

• Notes:
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "+".
  • 🎓 Name mentioned 4 times in PubMed until 2024-03-28.
  • 🧍 According to Bartlett et al. (2022), this species is a putative human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology 2022; 168:0.

Parent taxon: Williamsia Kämpfer et al. 1999

Assigned by: Yassin AF, Hupfer H. Williamsia deligens sp. nov., isolated from human blood. Int J Syst Evol Microbiol 2006; 56:193-197.

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Record number: 783103