Species Thermococcus profundus

Name: Thermococcus profundus Kobayashi and Horikoshi 1995

Category, proposed as: species, sp. nov.

Etymology: pro.fun’dus. L. masc. adj. profundus, deep, living within the depths of the oceans

Pronunciation (Latin), gender: t^her-mo-KOK-kus pro-FUN-dus, masculine

Type strain: ATCC 51592; CIP 105121; DSM 9503; JCM 9378; Strain DT5432

Conduct genome-based taxonomy at

16S rRNA gene: Z75233 Analyse FASTA

Effective publication: Kobayashi T, Kwak YS, Akiba T, Kudo T, Horikoshi K. Thermococcus profundus sp. nov., a new hyperthermophilic archaeon isolated from deep-sea hydrothermal vent. Syst. Appl. Microbiol. 1994; 17:232-236.

IJSEM list: Anonymous. Validation list no. 53. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1995; 45:418-419.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • ✏ The authority of the taxon name (Kobayashi and Horikoshi) deliberately differs from the authors of the publication (Kobayashi et al.).
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2026-08-13. 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 20 times in PubMed until 2026-06-11.
  • 🧍 Complete authorship reads: Kobayashi and Horikoshi 1995 in Kobayashi, Kwak, Akiba, Kudo and Horikoshi 1994.
  • 🧍 Error in List No. 52, should read THERMOCOCCUS; correct entry in List No. 53 IJSB 45:418. Publication: Anonymous. Validation list no. 53. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1995; 45:418-419.
  • 🧍 Thermus profundus Kobayashi et al. 1995 (Validation List no. 52) is an incorrect name and the correct entry Thermococcus profundus Kobayashi et al. 1995 appears in Validation List no. 53 [1]. So, Thermus profundus should be disregarded on List no. 52 [2]. Publication: Anonymous. Validation list no. 53. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1995; 45:418-419.
  • 🧍 So, Thermus profundus should be disregarded on List no. 52 [2]. Publication: Euzeby JP, Kudo T. Corrigenda to the validation lists. Int J Syst Evol Microbiol 2001; 51:1933-1938. 🇫🇷
  • 🧍 This taxon appears also in Validation List no. 52 [1] with an incorrect name: Thermus profundus (sic) Kobayashi et al. 1995 (effective publication Kobayashi et al. 1994, type strain: strain DT 5432). The correct name is Thermococcus profundus and Thermus profundus should be disregarded on List no. 52 [2]. Publication: Anonymous. Validation list no. 52. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1995; 45:197-198.

Parent taxon: Thermococcus Zillig 1983

Assigned by: Kobayashi T, Kwak YS, Akiba T, Kudo T, Horikoshi K. Thermococcus profundus sp. nov., a new hyperthermophilic archaeon isolated from deep-sea hydrothermal vent. Syst. Appl. Microbiol. 1994; 17:232-236.

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Record number: 782568

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