Name: Natronococcus occultus Tindall et al. 1984

Category: Species

Proposed as: sp. nov.

Etymology: oc.cul’tus. L. masc. part. adj. occultus, hidden, the hidden Natronococcus

Pronunciation (Latin), gender: na-tro-no-KOK-kus ok-KUL-tus, masculine

Type strain: ATCC 43101; CIP 104548; DSM 3396; JCM 8859; NBRC 102186; NCIMB 2192; NCMB 2192; SP 4; VKM B-1752

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB663470 Analyse FASTA

Effective publication: Tindall BJ, Ross HNM, Grant WD. Natronobacterium gen. nov. and Natronococcus gen. nov., two new genera of haloalkaliphilic archaebacteria. Syst. Appl. Microbiol. 1984; 5:41-57.

IJSEM list: Anonymous. Validation list no. 15. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1984; 34:355-357.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Natronococcus Tindall et al. 1984. Publication: Tindall BJ, Ross HNM, Grant WD. Natronobacterium gen. nov. and Natronococcus gen. nov., two new genera of haloalkaliphilic archaebacteria. Syst. Appl. Microbiol. 1984; 5:41-57.
  • 😷 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 25 times in PubMed until 2026-06-11.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683. 🇺🇸

Parent taxon: Natronococcus Tindall et al. 1984

Assigned by: Tindall BJ, Ross HNM, Grant WD. Natronobacterium gen. nov. and Natronococcus gen. nov., two new genera of haloalkaliphilic archaebacteria. Syst. Appl. Microbiol. 1984; 5:41-57.

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Record number: 778600