Name: Actinobacillus capsulatus Arseculeratne 1962 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: cap.su.la’tus. L. fem. dim. n. capsula, a litle chest; L. masc. adj. suff. -atus, suffix denoting provided with; N.L. masc. adj. capsulatus, encapsulated

Gender: masculine

Type strain: ATCC 51571; CCUG 12396; CIP 103283; DSM 19761; Frederiksen P243; NCTC 11408

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M75069 Analyse FASTA

Effective publication: Arseculeratne SN. Actinobacillosis in joints of rabbits. Journal of Comparative Pathology and Therapeutics 1962; 72:33-39.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 2

• Emendations:
  • Kuhnert et al. 2007 Kuhnert P, Korczak BM, Christensen H, Bisgaard M. Emended description of Actinobacillus capsulatus Arseculeratne 1962, 38AL. Int J Syst Evol Microbiol 2007; 57:625-632. Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 57, part 3 of the IJSEM. Int J Syst Evol Microbiol 2007; 57:1173-1174.
    Notes:
    • In the paper by Kuhnert et al. 2007, the type strain Frederiksen P243 is erroneously cited as Frederiksen 243.

• Notes:
  • The phylogenomic assignment score of this taxon is 0.08476 (N = 27).
  • 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.
  • The full TRBA 466 classification is: risk group = 2, note = "t".

Parent taxon: Actinobacillus Brumpt 1910 (Approved Lists 1980)

Assigned by: Arseculeratne SN. Actinobacillosis in joints of rabbits. Journal of Comparative Pathology and Therapeutics 1962; 72:33-39.

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Record number: 783276