Temperature Sensitive Allele
Temperature Sensitive Allele - Related Videos
10:51
High-Throughput Robotically Assisted Isolation of Temperature-sensitive Lethal Mutants in Chlamydomonas reinhardtii
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Cited by 8 •
2016
Temperature-sensitive (ts) lethal mutants are valuable tools to identify and analyze essential functions. Here we describe methods to generate and classify ts lethal mutants in high throughput.
09:51
Microfluidic Production of Lysolipid-Containing Temperature-Sensitive Liposomes
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Cited by 5 •
2020
The protocol presents the optimized parameters for preparing thermosensitive liposomes using the staggered herringbone micromixer microfluidics device. This also allows co-encapsulation of doxorubicin and indocyanine green into the liposomes and the photothermal-triggered release of doxorubicin for controlled/triggered drug release.
02:19
Multiple Allele Traits
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2021
For the same gene multiple alleles can interact to influence phenotypes like the shape and protein composition of an individual cells.By studying allele interactions on the molecular and cellular levels researchers can understand the resulting phenotypes and complications of human conditions like sickle cell trait, improving treatment.The ABO blood group system is a common example of multiple alleles in humans. This system includes three alleles called IA, IB, and i alleles, which combine in...
02:41
Lethal Alleles
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2021
Agouti: A Lethal Allele Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
10:17
An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
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Cited by 2 •
2010
Genetic associations often remain unexplained at a functional level. This method aims to assess the effect of phenotype-associated genetic markers on gene expression by analyzing cells heterozygous for transcribed SNPs. The technology allows accurate measurement by MALDI-TOF mass spectrometry to quantify allele-specific primer extension products.
FAQs
The key molecular difference is protein performance across temperatures. At the permissive temperature, the altered protein can fold or function well enough to support a normal phenotype. At the restrictive temperature, destabilization or impaired activity exposes the allele’s effect, linking environmental condition to gene function.
Because a permanent loss of function affects the gene continuously, it may not show how that gene contributes at different stages. Temperature Sensitive Allele experiments allow researchers to impose the altered condition at a defined developmental point. Comparing outcomes after stage-specific shifts helps identify when gene activity is required.
The developmental stage at which the environment is changed determines which phase of gene function becomes visible. A shift during one stage may expose a role in cell division, whereas a shift during another may reveal effects on differentiation or tissue development. Thus, timing is central to interpretation.
A useful workflow begins by maintaining the organism under the permissive condition, where the altered protein can support the normal phenotype. Researchers then shift temperature at a defined stage and examine the resulting phenotype. This sequence connects the timing of the environmental change with the biological process affected.
Temperature Sensitive Allele studies are especially valuable when permanent gene disruption would prevent analysis of an essential gene. Conditional exposure to the restrictive temperature can reveal the consequences of impaired function without requiring the gene’s effect to be present throughout the entire study. This makes stage-specific investigation possible in biology.
In developmental and cell biology, the observed phenotype can provide evidence about gene contributions to cell division, differentiation, and tissue development. The method is therefore useful not only for detecting that a mutation has an effect, but also for associating that effect with a particular developmental stage. Such stage-linked evidence helps clarify when gene activity matters.