Template Amplification
Template Amplification - Related Videos
09:44
Rapid Amplification of cDNA Ends
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2023
Source: Pablo Sanchez Bosch2, Sean Corcoran2 and Katja Brückner1,2,3 1Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research 2Department of Cell and Tissue Biology, 3Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, USA Rapid Amplification of cDNA Ends (RACE) is a technique that allows amplification of full-length cDNA from mRNA by extending to the 3’ or 5’ end, even without prior knowledge of the sequence (Frohman et al.,...
07:35
Rapid, Enzymatic Methods for Amplification of Minimal, Linear Templates for Protein Prototyping using Cell-Free Systems
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Cited by 4 •
2021
The study describes a protocol for creating large (µg-mg) quantities of DNA for protein screening campaigns from synthetic gene fragments without cloning or using living cells. The minimal template is enzymatically digested and circularized and then amplified using isothermal rolling circle amplification. Cell-free expression reactions could be performed with the unpurified product.
02:48
Loop-Mediated Isothermal Amplification for Bacterial Gene Detection
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2025
Source: Domesle, K. J., et al. Loop-Mediated Isothermal Amplification for Screening Salmonella in Animal Food and Confirming Salmonella from Culture Isolation. J. Vis. Exp. (2020).This video demonstrates the loop-mediated isothermal amplification (LAMP) technique for detecting a target bacterial gene by amplifying DNA at a constant temperature. The reaction mixture is prepared by adding an isothermal master mix, specific primers for the target gene, and samples containing DNA templates. The...
02:05
DNA as a Genetic Template
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2020
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
10:12
Protein Misfolding Cyclic Amplification of Prions
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Cited by 7 •
2012
Protein misfolding cyclic amplification (PMCA) is an in vitro assay for the study of prion conversion and strain and species barriers. It can also be used as a prion detection assay.
FAQs
Primers determine the boundaries of the region selected for copying. During the cooling phase, each primer anneals to its complementary sequence, giving DNA polymerase a starting point for extension. Their placement therefore controls which genetic segment becomes abundant, making the resulting material suitable for focused analysis such as genotyping or mutation detection.
Heating separates DNA strands, while cooling permits primers to anneal and polymerase to extend them. Repeating this sequence creates additional copies that can participate in later rounds. Because amplification recurs across cycles, the target increases exponentially rather than only by a fixed amount. This growth is important when the starting sample contains little genetic material.
Increasing template abundance improves access to genetic information that would otherwise be difficult to detect or analyze from a small sample. The process does not serve merely to add material: it preserves the sequence information of the selected target. This combination supports sensitive, reproducible investigations while enabling uses such as sequencing, cloning, or mutation detection.
A typical PCR-based workflow begins with a nucleic acid template, primers, DNA polymerase, and controlled heating and cooling. Heating separates DNA strands; cooling allows complementary primer annealing; polymerase then extends the primers. Repeating these stages generates the amplified product, which can be directed toward genotyping, mutation detection, sequencing, cloning, or other genetic analysis.
Selective amplification increases the abundance of a chosen genetic region so its sequence can be examined more readily. In genotyping, this supports analysis of specific genetic material, while mutation detection focuses attention on sequence changes within the amplified target. The approach is especially useful when the available sample contains limited genetic material and direct analysis would be difficult.
Sequencing and cloning require access to a selected nucleic acid region, and amplification supplies many copies of that target from a small starting amount. Because the amplified material preserves the target's sequence information, it can support subsequent analysis or incorporation into cloning workflows. This makes the technique broadly useful across genetics and molecular biology.