Evidence map›Paper›PMID 28687946›Full record

ArticleCurrent microbiology2017

Genome-Based Reclassification of Fusobacterium nucleatum Subspecies at the Species Level.

Joong-Ki Kook, Soon-Nang Park, Yun Kyong Lim, Eugene Cho, Eojin Jo, Hansung Roh, Yeseul Shin, Jayoung Paek, Hwa-Sook Kim, Hongik Kim and 2 more

Erratum issuedAbstract read
PubMed Publisher
In one paragraph

Article in Current microbiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 73 papers.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

73 citing papers in PubMed.

  1. Article
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  7. IntratumoralAnnals of gastroenterological surgery · 2026
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  8. Review
  9. Article
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  11. Article
  12. Review
  13. Article
  14. Addressing controversy inGut microbes · 2025
    Article
  15. Review
  16. MedComm · 2025
    Review
  17. Article
  18. Article
  19. Article
  20. Journal of bacteriology · 2025
    Review

13 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

Joong-Ki KookKorean Collection for Oral Microbiology, Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea. jkkook@chosun.ac.kr.
Soon-Nang ParkKorean Collection for Oral Microbiology, Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea.
Yun Kyong LimKorean Collection for Oral Microbiology, Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea.
Eugene ChoKorean Collection for Oral Microbiology, Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea.
Eojin JoKorean Collection for Oral Microbiology, Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea.
Hansung RohMacrogen Inc., Seoul, Republic of Korea.
Yeseul ShinABS Research Support Center, KRIBB, Daejeon, Republic of Korea.
Jayoung PaekABS Research Support Center, KRIBB, Daejeon, Republic of Korea.
Hwa-Sook KimDepartment of Dental Hygiene, Chunnam Techno University, Gokseong-gun, Chunnam, Republic of Korea.
Hongik KimVitabio, Inc., Daejeon, Republic of Korea.
Jeong Hwan ShinDepartment of Laboratory Medicine, Inje University College of Medicine, Busan, Republic of Korea.
Young-Hyo ChangABS Research Support Center, KRIBB, Daejeon, Republic of Korea. yhchang@kribb.re.kr.

Funding

This research was supported by the Bio & Medical Technology Development Program of the National Research Foundation (NRF) funded by the Ministry of Science, ICT & Future Planning 2013M3A9A5076603This research was supported by the Bio & Medical Technology Development Program of the National Research Foundation (NRF) funded by the Ministry of Science, ICT & Future Planning 2013M3A9B8013860
6 · The paper itself

Abstract

Fusobacterium nucleatum is classified as four subspecies, subsp. nucleatum, polymorphum, vincentii, and animalis, based on DNA-DNA hybridization (DDH) patterns, phenotypic characteristics, and/or multilocus sequence analysis (MLSA). The gold standards for classification of bacterial species are DDH and 16S ribosomal RNA gene (16S rDNA) sequence homology. The thresholds of DDH and 16S rDNA similarity for delineation of bacterial species have been suggested to be >70 and 98.65%, respectively. Average nucleotide identity (ANI) and genome-to-genome distance (GGD) analysis based on genome sequences were recently introduced as a replacement for DDH to delineate bacterial species with ANI (95-96%) and GGD (70%) threshold values. In a previous study, F. hwasookii was classified as a new species based on MLSA and DDH results. 16S rDNA similarity between F. hwasookii type strain and F. nucleatum subspecies type strains was higher than that between F. nucleatum subspecies type strains. Therefore, it is possible that the four F. nucleatum subspecies can be classified as Fusobacterium species. In this study, we performed ANI and GGD analyses using the genome sequences of 36 F. nucleatum, five F. hwasookii, and one Fusobacterium periodonticum strain to determine whether the four F. nucleatum subspecies could be classified as species using OrthoANI and ANI web-based softwares provided by ChunLab and Kostas lab, respectively, and GGD calculator offered by German Collection of Microorganisms and Cell Cultures. ANI values calculated from OrthoANI and ANI calculators between the type strains of F. nucleatum subspecies ranged from 89.80 to 92.97 and from 90.40 to 91.90%, respectively. GGD values between the type strains of F. nucleatum subspecies ranged from 42.3 to 46.0%. ANI and GGD values among strains belonging to the same F. nucleatum subspecies, subsp. nucleatum, subsp. polymorphum, subsp. vincentii, and subsp. animalis were >96 and >68.2%, respectively. These results strongly suggest that F. nucleatum subsp. nucleatum, subsp. polymorphum, subsp. vincentii, and subsp. animalis should be classified as F. nucleatum, F. polymorphum, F. vincentii, and F. animalis, respectively.

Indexed as

Genome, BacterialGenomicsMolecular TypingEvolution, MolecularFusobacterium nucleatumPhylogenyRNA, Ribosomal, 16SSequence Analysis, DNARNA, Ribosomal, 16S

Identifiers

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.