Related Experiment Video
Updated: Mar 29, 2026

08:11
Single-Animal, Single-Tube RNA Extraction for Comparison of Relative Transcript Levels via qRT-PCR in the Tardigrade Hypsibius exemplaris
Published on: January 3, 2025
971
Insights into Tardigrade Damage-Suppression Protein, Dsup.
Tyler J Woodward1, M Todd Washington1
1Department of Biochemistry and Molecular Biology, College of Medicine, University of Iowa, Iowa City, IA 52242, USA.
Biomolecules
|March 28, 2026
Summary
Damage suppressor (Dsup) protein from tardigrades protects DNA from radiation damage. This review explores Dsup
Area of Science:
- Extremophile biology
- Molecular biology
- Biochemistry
Background:
- Tardigrades exhibit remarkable resilience to extreme conditions.
- Damage suppressor (Dsup) protein is crucial for DNA protection against radiation.
- Dsup's properties and protective mechanisms are under active investigation.
Purpose of the Study:
- To review current knowledge on Dsup's biochemical, structural, and functional properties.
- To summarize proposed mechanisms of Dsup-mediated DNA protection.
- To discuss potential applications of Dsup in human health.
Main Methods:
- Literature review of existing studies on Dsup.
- Analysis of proposed protective mechanisms.
- Synthesis of current understanding and identification of research gaps.
Main Results:
- Dsup possesses unique properties contributing to DNA protection.
- Multiple complementary mechanisms are likely involved in Dsup's protective function.
- Gaps in understanding Dsup's precise modes of action remain.
Conclusions:
- Dsup is a key protein conferring radiation resistance in tardigrades.
- Further research is needed to fully elucidate Dsup's protective mechanisms.
- Dsup and related technologies hold promise for human health applications.
More Related Videos
Related Concept Videos
Endospores and Sporulation
7.1K
Endospores are specialized, dormant cells primarily formed by Gram-positive bacteria, including Bacillus and Clostridium, enabling survival under extreme environmental conditions. Due to their unique composition and formation process, these structures are highly resistant to physical and chemical insults, such as extreme heat, ultraviolet and ionizing radiation, desiccation, and toxic chemicals. Rare instances of endospore-like structures have also been observed in some Gram-negative bacteria,...
7.1K
Translesion DNA Polymerases
11.6K
Translesion (TLS) polymerases rescue stalled DNA polymerases at sites of damaged bases by replacing the replicative polymerase and installing a nucleotide across the damaged site. Doing so, TLS allows additional time for the cell to repair the damage before resuming regular DNA replication.
TLS polymerases are found in all three domains of life - archaea, bacteria, and eukaryotes. Of the different classes of TLS polymerases, members of the Y family are fitted with specialized structures that...
TLS polymerases are found in all three domains of life - archaea, bacteria, and eukaryotes. Of the different classes of TLS polymerases, members of the Y family are fitted with specialized structures that...
11.6K
Nonsense-mediated mRNA Decay
12.1K
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
12.1K
Other Unique Bacteria
535
Magnetic bacteria exhibit a directed movement called magnetotaxis, driven by structures called magnetosomes. These magnetosomes consist of chains of magnetic particles made of either magnetite (Fe₃O₄) or greigite (Fe₃S₄) and are organized in a linear conformation by a protein scaffold within invaginations of the cell membrane. The bacteria align along the north–south magnetic field lines, much like a compass needle. They are typically microaerophilic or anaerobic...
535
Single-Strand DNA Binding Proteins
17.2K
For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
17.2K
DNA Damage can Stall the Cell Cycle
10.4K
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
10.4K

