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Culture plays a crucial role in shaping self-identity and influencing thought and behavior, a foundational interest within social psychology. The multicultural perspective recognizes that individuals do not exist in a vacuum; instead, their experiences, perceptions, and actions are deeply influenced by the intersecting dimensions of their cultural, ethnic, and social group affiliations.Cultural Influence on Self-Identity and Social PerceptionCultural frameworks inform how individuals define...
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The cell membrane, or plasma membrane, is an ever-changing landscape. It is described as a fluid mosaic where various macromolecules are embedded in the phospholipid bilayer. Among the macromolecules are proteins. The protein content varies across cell types. For example, mitochondrial inner membranes contain ~76% protein content, while myelin contains ~18% protein content. Individual cells contain many types of membrane proteins—red blood cells contain over 50—and different cell...
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Related Experiment Video

Updated: Jan 25, 2026

Screening for Thermotoga maritima Membrane-Bound Pyrophosphatase Inhibitors
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Physiological role for the membrane bound ascorbate-TMPD oxidase in pseudomonas putida.

M V Jones

    Archives of Microbiology
    |March 10, 1975
    PubMed
    Summary

    Pseudomonas putida

    Area of Science:

    • Microbiology
    • Biochemistry
    • Enzymology

    Background:

    • Membrane-bound enzymes play crucial roles in cellular respiration.
    • Understanding terminal oxidases is key to deciphering electron transport chains.

    Purpose of the Study:

    • To investigate the role of ascorbate-TMPD oxidase in Pseudomonas putida.
    • To determine its function in substrate oxidation under varying conditions.

    Main Methods:

    • Enzyme activity assays.
    • Comparative analysis of inhibitor effects (cyanide, azide).
    • Substrate oxidation studies.

    Main Results:

    • Ascorbate-TMPD oxidase activity is influenced by growth conditions and culture age.

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  • This oxidase is not the primary terminal oxidase for NADH or succinate.
  • Evidence suggests a role in nicotinate oxidation.

    • Conclusions:

    • Ascorbate-TMPD oxidase has a specific role in Pseudomonas putida metabolism.
    • It may function as an auxiliary terminal oxidase depending on growth conditions.