Name: Tsukamurella tyrosinosolvens Yassin et al. 1997

Category: Species

Proposed as: sp. nov.

Etymology: ty.ro.si.no.sol’vens. N.L. fem. n. tyrosina, tyrosine (an amino acid); from Gr. masc. n. tyros, cheese; L. pres. part. solvens, dissolving; N.L. fem. part. adj. tyrosinosolvens, tyrosine dissolving, referring to the hydrolysis of tyrosine which is characteristic of this species

Pronunciation (Latin), gender: tsu-ka-mu-REL-la ty-ro-si-no-SOL-wens, feminine

Type strain: CCUG 38499; DSM 44234; IMMIB D-1397; JCM 10112

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: KX924545 Analyse FASTA

Valid publication: Yassin AF, Rainey FA, Burghardt J, Brzezinka H, Schmitt S, Seifert P, Zimmermann O, Mauch H, Gierth D, Lux I, et al. Tsukamurella tyrosinosolvens sp. nov. Int J Syst Bacteriol 1997; 47:607-614. 🇩🇪

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 47, part 3 of the IJSB. Int J Syst Bacteriol 1997; 47:1275-1276.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 2

• Synonyms:

  • Name	Kind
    Tsukamurella carboxydivorans Park et al. 2009	heterotypic synonym, validly published under the ICNP

• Emendations:
  • Teng et al. 2016 Teng JL, Tang Y, Huang Y, Guo FB, Wei W, Chen JH, Wong SS, Lau SK, Woo PC. Phylogenomic Analyses and Reclassification of Species within the Genus Tsukamurella: Insights to Species Definition in the Post-genomic Era. Front Microbiol 2016; 7:1137. 🇭🇰 Oren A, Garrity GM. List of changes in taxonomic opinion no. 25. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:7-8.
    Notes:
    • 🫂 Emendation accompanied by a proposal regarding the synonymy of the species.

• Notes:
  • ⏰ According to Nouioui et al. (2018), this species is an earlier heterotypic synonym of Tsukamurella carboxydivorans Park et al. 2009. Publication: 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. 🇩🇪
  • ⏰ According to Teng et al. (2016), this species is an earlier heterotypic synonym of Tsukamurella carboxydivorans Park et al. 2009. Publication: Teng JL, Tang Y, Huang Y, Guo FB, Wei W, Chen JH, Wong SS, Lau SK, Woo PC. Phylogenomic Analyses and Reclassification of Species within the Genus Tsukamurella: Insights to Species Definition in the Post-genomic Era. Front Microbiol 2016; 7:1137. 🇭🇰
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: 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.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. List of changes in taxonomic opinion no. 25. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:7-8.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2. — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 2. — 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 36 times in PubMed until 2026-06-11.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧

Parent taxon: Tsukamurella Collins et al. 1988

Assigned by: Yassin AF, Rainey FA, Burghardt J, Brzezinka H, Schmitt S, Seifert P, Zimmermann O, Mauch H, Gierth D, Lux I, et al. Tsukamurella tyrosinosolvens sp. nov. Int J Syst Bacteriol 1997; 47:607-614. 🇩🇪

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Record number: 782896