Species Shimwellia pseudoproteus

Name: Shimwellia pseudoproteus Priest and Barker 2010

Category, proposed as: species, sp. nov.

Etymology: pseu.do.pro’teus. Gr. masc./fem. adj. pseudês, false; Gr. masc. n. prôteus, the ancient sea-god, noted for being able to change his form at will, and also a bacterial epithet; N.L. masc. n. pseudoproteus, the false [Obesumbacterium] proteus (nominative in apposition)

Pronunciation (Latin), gender: s͡him-WEL-li-a pse͡u-do-PRO-te͡us, feminine

Type strain: 521; DSM 3038; LMG 24835; NCIMB 14534

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: FJ267523 Analyse FASTA

Valid publication: Priest FG, Barker M. Gram-negative bacteria associated with brewery yeasts: reclassification of Obesumbacterium proteus biogroup 2 as Shimwellia pseudoproteus gen. nov., sp. nov., and transfer of Escherichia blattae to Shimwellia blattae comb. nov. Int J Syst Evol Microbiol 2010; 60:828-833. 🇬🇧

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 60, part 4 of the IJSEM. Int J Syst Evol Microbiol 2010; 60:1480-1481.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Shimwellia Priest and Barker 2010. Publication: Priest FG, Barker M. Gram-negative bacteria associated with brewery yeasts: reclassification of Obesumbacterium proteus biogroup 2 as Shimwellia pseudoproteus gen. nov., sp. nov., and transfer of Escherichia blattae to Shimwellia blattae comb. nov. Int J Syst Evol Microbiol 2010; 60:828-833. 🇬🇧
  • 😷 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 1 time in PubMed until 2026-06-11.
  • 🧍 Shimwellia pseudoproteus Priest and Barker 2010 was previously known as Obesumbacterium proteus hybridisation group 2 or as Obesumbacterium proteus biogroup 2. — 🧍 Previously known as Obesumbacterium proteus biogroup 2. Publication: Shimwell JL. Obesumbacterium gen. nov. Brewers Journal 1963; 99:759-760.

Parent taxon: Shimwellia Priest and Barker 2010

Assigned by: Priest FG, Barker M. Gram-negative bacteria associated with brewery yeasts: reclassification of Obesumbacterium proteus biogroup 2 as Shimwellia pseudoproteus gen. nov., sp. nov., and transfer of Escherichia blattae to Shimwellia blattae comb. nov. Int J Syst Evol Microbiol 2010; 60:828-833. 🇬🇧

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Record number: 788467