Corynebacterium Propinquum
Corynebacterium Propinquum - Related Videos
01:28
Optogenetic Control of Gene Expression in Corynebacterium glutamicum
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2025
Take a culture of Corynebacterium glutamicum, transformed with a plasmid carrying a fluorescent reporter gene downstream of the ribonucleic acid anti-terminator or RAT sequence, in a multi-well plate.During transcription, the RAT-RNA forms a stem-loop structure that blocks RNA polymerase, halting reporter gene expression.The plasmid also constitutively expresses LicV, a fusion protein comprising the RAT-RNA-binding protein, LicT, and the blue-light-sensitive VVD domain.In darkness, LicV remains...
03:30
An In Vitro Assay to Study Microbial Interactions in Co-Culture
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2026
Source: Temkin, M. I. et al. High Throughput Co-culture Assays for the Investigation of Microbial Interactions. J. Vis. Exp. (2019)This video demonstrates an in vitro assay to study microbial interactions between Corynebacterium propinquum and Staphylococcus in a co-culture.
12:04
Microfluidic Picoliter Bioreactor for Microbial Single-cell Analysis: Fabrication, System Setup, and Operation
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Cited by 75 •
2013
In this protocol the fabrication, setup and basic operation of a microfluidic picoliter bioreactor (PLBR) for single-cell analysis of prokaryotic microorganisms is introduced. Industrially relevant microorganisms were analyzed as proof of principle allowing insights into growth rate, morphology, and phenotypic heterogeneity over certain time periods, hardly possible with conventional methods.
FAQs
Its pleomorphic, high-GC cell structure and lipid-rich cell envelope create recognizable biological features that help guide laboratory characterization. The envelope supports persistence outside or within respiratory-associated settings and can influence staining behavior and antimicrobial susceptibility. Consequently, researchers interpret staining and susceptibility findings together with culture, biochemical, and molecular results rather than relying on one observation alone.
Detection in a respiratory sample does not by itself establish disease because C. propinquum may occur within the normal upper-respiratory microbial community. Clinical interpretation therefore asks whether the organism represents colonization or an opportunistic infection. Combining laboratory identification with the broader respiratory context helps investigators study disease involvement without treating every positive finding as evidence of pathogenic activity.
Its association with the human upper respiratory tract makes C. propinquum useful for examining how resident microbes coexist with the host and with other members of the respiratory microbiota. The organism provides a model for studying the boundary between normal community membership and opportunistic disease, especially when researchers investigate host-microbe interactions or changes linked with respiratory illness.
A reliable distinction generally requires a combination of culture, biochemical testing, and molecular identification. These approaches contribute different kinds of evidence: culture supports recovery, biochemical testing evaluates characteristic activities, and molecular methods provide identification at the genetic level. Using the methods together helps resolve species-level identity when related Corynebacterium organisms have similar broad cellular characteristics.
The investigation begins with culture to recover the organism from the relevant respiratory material, followed by biochemical testing and molecular identification. Researchers then compare the combined findings with the clinical or microbiological context to assess whether the isolate reflects colonization or possible infection. This staged workflow connects organism recovery with species assignment and biological interpretation.
Culture establishes that a viable organism can be recovered under the conditions used, while biochemical testing adds phenotypic information that supports differentiation. Molecular identification contributes a genetic basis for assigning the isolate. Together, these results can strengthen species recognition, support investigations of respiratory disease, and provide a more complete picture than any single test.
It becomes particularly relevant when respiratory samples contain a Corynebacterium isolate and investigators must evaluate its biological significance. Studies may focus on distinguishing normal upper-respiratory community membership from opportunistic infection, examining antimicrobial susceptibility, or exploring host-microbe relationships. These applications also connect organism identification with broader questions about how respiratory microbiota contribute to health and disease.