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Related Concept Videos

Genomic DNA in Prokaryotes00:46

Genomic DNA in Prokaryotes

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The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
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Bacterial Phylum Tenericutes01:24

Bacterial Phylum Tenericutes

The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...
Binary Fission01:20

Binary Fission

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Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
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Viral Replication: Lysogenic Cycle01:16

Viral Replication: Lysogenic Cycle

The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects...
Prokaryotic Cells01:28

Prokaryotic Cells

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Prokaryotes are small unicellular organisms that include the domains — Archaea and Bacteria. Bacteria include many common microorganisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize...
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Replication in Prokaryotes01:32

Replication in Prokaryotes

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DNA replication has three main steps: initiation, elongation, and termination. Replication in prokaryotes begins when initiator proteins bind to the single origin of replication (ori) on the cell's circular chromosome. Replication then proceeds around the entire circle of the chromosome in each direction from the two replication forks, resulting in two DNA molecules.
Many Proteins Work Together to Replicate the Chromosome
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Updated: Jun 7, 2025

Monitoring Plasmid Replication in Live Mammalian Cells over Multiple Generations by Fluorescence Microscopy
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Self-Documenting Plasmids.

Sarah I Hernandez, Samuel J Peccoud, Casey-Tyler Berezin

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    Summary
    This summary is machine-generated.

    Self-documenting plasmids encode their own information within their DNA, simplifying verification and securing biotechnology workflows. This innovation enhances plasmid security and intellectual property protection in life sciences.

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    Area of Science:

    • Biotechnology
    • Molecular Biology
    • Genomic Engineering

    Background:

    • Plasmids are essential DNA molecules in biotechnology for protein production and organism engineering.
    • Ensuring plasmid sequence accuracy is critical but challenging for research and development.
    • Current methods for plasmid verification can be complex and time-consuming.

    Purpose of the Study:

    • To develop a novel method for intrinsic plasmid verification.
    • To create self-documenting plasmids that contain their own sequence information.
    • To enhance the security and traceability of plasmids in biotechnological applications.

    Main Methods:

    • Engineered plasmids to encode self-referential sequence data within their DNA.
    • Tested the functionality of self-documenting plasmids in bacterial propagation.
    • Assessed the impact of embedded data on protein expression in mammalian cells.

    Main Results:

    • Self-documenting plasmids successfully encode and retain their own information.
    • Plasmid propagation in bacteria was not adversely affected by the embedded data.
    • Protein expression in mammalian cells remained uncompromised by the self-documentation feature.

    Conclusions:

    • Self-documenting plasmids offer a robust solution for intrinsic plasmid verification.
    • This technology simplifies plasmid management, strengthens supply chains, and improves intellectual property protection.
    • The approach has the potential to revolutionize security and data integrity in life sciences.