Name: Slackia isoflavoniconvertens Matthies et al. 2009

Category: Species

Proposed as: sp. nov.

Etymology: i.so.fla.vo.ni.con.ver’tens. N.L. neut. n. isoflavonum, isoflavone; L. pres. part. convertens, converting; N.L. fem. part. adj. isoflavoniconvertens, isoflavone converting

Pronunciation, gender: … i-so-fla-wo-ni-kon-WER-tens, feminine

Type strain: CCUG 57679; DSM 22006; JCM 16137; strain HE8

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB566418 Analyse FASTA

Effective publication: Matthies A, Blaut M, Braune A. Isolation of a human intestinal bacterium capable of daidzein and genistein conversion. Appl Environ Microbiol 2009; 75:1740-1744. 🇩🇪

IJSEM list: Euzeby JP. Validation list no. 129. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2009; 59:2129-2130.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Notes:
  • 😷 The risk group for Germany has been imported on 2023-10-29. 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 18 times in PubMed until 2025-06-04.
  • 🙆 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 other species in the genus.
  • 🧍 The culture collection accession number CCUG 57679 has been provided at the time of request for valid publication of the name. Publication: Euzeby JP. Validation list no. 129. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2009; 59:2129-2130.

Parent taxon: Slackia Wade et al. 1999

Assigned by: Matthies A, Blaut M, Braune A. Isolation of a human intestinal bacterium capable of daidzein and genistein conversion. Appl Environ Microbiol 2009; 75:1740-1744. 🇩🇪

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Record number: 787761