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Related Experiment Videos

[Utilization of hemoglobin by the plague microbe].

A N Kravtsov, V P Ziuzina, V I Tynianova

    Molekuliarnaia Genetika, Mikrobiologiia I Virusologiia
    |June 1, 1989
    PubMed
    Summary

    Hemin and hemoglobin provide sufficient iron for Yersinia pestis growth. The bacterium absorbs intact hem molecules through a similar assimilation mechanism for both iron sources.

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    Area of Science:

    • Microbiology
    • Bacterial Pathogenesis
    • Iron Metabolism

    Background:

    • Yersinia pestis is a significant human pathogen.
    • Iron is an essential nutrient for bacterial growth and virulence.
    • Pathogens often utilize host-derived iron sources.

    Purpose of the Study:

    • To investigate the utilization of hemin and hemoglobin as iron sources for Yersinia pestis growth.
    • To elucidate the mechanism of iron assimilation from these heme compounds.

    Main Methods:

    • Bacterial growth assays using hemin and hemoglobin as sole iron sources.
    • Analysis of iron uptake mechanisms.

    Main Results:

    • Hemin and hemoglobin support adequate growth of Yersinia pestis.
    • The assimilation mechanism for both compounds involves the uptake of intact hem molecules.

    Conclusions:

    • Yersinia pestis can efficiently utilize host-derived hemin and hemoglobin for iron acquisition.
    • The bacterium employs a conserved mechanism for absorbing intact hem molecules, highlighting its adaptability in iron-limited environments.

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