Genome of Superficieibacter maynardsmithii, a novel, antibiotic susceptible representative of Enterobacteriaceae

Gherard Batisti Biffignandi, Marjorie J. Gibbon, Marta Corbella, Harry A. Thorpe, Cristina Merla, Michele Castelli, Teemu Kallonen, Katie Pegrum, Sylvain Brisse, Jukka Corander, Piero Marone, Edward J. Feil, Davide Sassera

Research output: Contribution to journalArticlepeer-review

1 Citation (SciVal)


During a citywide microbiological screening project in Pavia (Italy) a bacterial strain isolated from the surface of an Automated Teller Machine was classified as a Klebsiella sp. by MALDI-TOF spectrometry, and shown to be susceptible to the most antimicrobial classes by phenotypic testing. After Illumina genome sequencing and subsequent assembly, a high-quality draft genome was obtained (size ¼ 5,051,593 bp, N50 ¼ 615,571 bp, largest contig ¼ 1,328,029 bp, N_contig ¼ 17, GC content ¼ 51.58%, coverage ¼ 141.42), absence of antimicrobial resistance genes was confirmed, but the strain resulted to be highly divergent from all Klebsiella, and more related to other Enterobacteriaceae. The higher values of 16S rRNA identity were with members of the genera Citrobacter, Salmonella, and “Superficieibacter.” An ortholog-based phylogenomic analysis indicated a sister group relationship with “Superficieibacter electus,” in a distinct clade from other members of the Enterobacteriaceae family. In order to evaluate whether the novel genome represents a new species of “Superficiebacter,” average nucleotide identity (ANI) and Hadamard analysis were performed on a dataset of 78 Enterobacteriaceae. The novel genome showed an ANI of 87.51% with S. electus, which compared on identity values between other members of the family, clearly indicates that the genome represents a new species within the genus “Superficieibacter.” We propose for the new species the name "Superficieibacter maynardsmithii".

Original languageEnglish
Article numberjkab019
JournalG3: Genes, Genomes, Genetics
Issue number2
Early online date13 Feb 2021
Publication statusPublished - 28 Feb 2021

Bibliographical note

Funding Information:
This work was funded by the SpARK project “The rates and routes of transmission of multidrug resistant Klebsiella clones and genes into the clinic from environmental sources,” which has received funding under the 2016 JPI-AMR call “Transmission Dynamics” (MRC reference MR/R00241X/1), by Italian Ministry of Education, University and Research (MIUR): Dipartimenti di Eccellenza Program (2018–2022)—Dept. of Biology and Biotechnology “L. Spallanzani,” University of Pavia to D.S.

Publisher Copyright:
© The Author(s) 2021. Published by Oxford University Press on behalf of Genetics Society of America.

Copyright 2021 Elsevier B.V., All rights reserved.


  • ANI
  • Enterobacteriaceae
  • Hadamard
  • Superficieibacter

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Genetics(clinical)


Dive into the research topics of 'Genome of Superficieibacter maynardsmithii, a novel, antibiotic susceptible representative of Enterobacteriaceae'. Together they form a unique fingerprint.

Cite this