Related Experiment Video
Updated: Sep 25, 2026

Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice
Published on: December 4, 2020
Actinobaculum urinale sp. nov., from human urine
Val Hall1, Matthew D Collins2, Roger A Hutson2
1Anaerobe Reference Unit, PHLS, University Hospital of Wales, Cardiff CF14 4XW, UK.
Abstract:
A hitherto undescribed Actinomyces-like bacterium was isolated from human urine. Based on its biochemical characteristics, the unidentified bacterium did not correspond to any currently described Actinomyces species or related taxa. Comparative 16S rRNA gene sequencing showed that the unknown bacterium exhibits a specific phylogenetic association with the genus Actinobaculum, but a sequence divergence of > 5% from the two currently recognized members of this genus, Actinobaculum schaalii and Actinobaculum suis, demonstrates that it represents a distinct species. Based on both phenotypic and 16S rRNA gene sequence considerations, it is proposed that the unknown bacterium from urine should be classified as a novel species, Actinobaculum urinale sp. nov. The type strain of Actinobaculum urinale is CCUG 46093(T) (= CIP 107424(T)).
Related Concept Videos
Filtration and Urine Formation
Anatomy of the Genitourinary System II: Bladder and Urethra
Urinary Tract Infection I: Introduction
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
Urine Studies II: Urine Culture and Sensitivity Test
Microbiota of the Urogenital Tract

