Name: Lactococcus intestinalis Sun et al. 2024

Category: Species

Proposed as: sp. nov.

Etymology: in.tes.ti.na’lis. N.L. masc. adj. intestinalis, of intestinal, where the type strain M2458T was isolated

Pronunciation, gender: in-tes-ti-NA-lis, masculine

Type strain: CGMCC 1.60066; JCM 35706; M 2458

Conduct genome-based taxonomy at

16S rRNA gene: OM926013 Analyse FASTA

Effective publication: Sun P, Li X, Shi W, Zhang L, Li M, Su L, Qin C. Lactococcus intestinalis sp. nov., a new lactic acid bacterium isolated from intestinal contents in Alzheimer's disease mice. Antonie Van Leeuwenhoek 2023; 116:425-433. 🇨🇳

IJSEM list: Oren A, Göker M. Validation list no. 216. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2024; 74:6229.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Lactococcus muris Afrizal et al. 2023

• Synonyms:

  • Name	Kind
    Lactococcus muris Afrizal et al. 2023	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Zhu and Gu (2024), this species is a later heterotypic synonym of Lactococcus muris Afrizal et al. 2023. Publication: Zhu XY, Gu CT. Proposal of Lactococcus intestinalis Sun et al. 2024 as a Later Heterotypic Synonym of Lactococcus muris Afrizal et al. 2023. Curr Microbiol 2024; 82:34. 🇨🇳
  • ❗ Lactococcus intestinalis is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Lactococcus.
  • 🎓 Name mentioned 2 times in PubMed until 2025-06-04.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus.

Parent taxon: Lactococcus Schleifer et al. 1986

Assigned by: Sun P, Li X, Shi W, Zhang L, Li M, Su L, Qin C. Lactococcus intestinalis sp. nov., a new lactic acid bacterium isolated from intestinal contents in Alzheimer's disease mice. Antonie Van Leeuwenhoek 2023; 116:425-433. 🇨🇳

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Record number: 46541