Polymerase Chain Reaction (PCR) Primer Synthesis

Polymerase Chain Reaction (PCR) is a molecular biology technique for making multiple copies of a DNA segment. Kary Mullis, an American scientist, invented this approach in 1983. A small section of DNA may now be copied millions of times, thanks to PCR. Researchers who work in Molecular biology and biotechnology laboratories often use this process.

In genomics, a primer is a single-stranded DNA fragment used in specific laboratory techniques like the polymerase chain reaction (PCR). A pair of primers hybridize with sample DNA and identify the region that will be amplified in the PCR process, resulting in millions of copies in a relatively short duration. DNA sequencing and other experimental techniques also use primers.

The PCR principle

The PCR method is fundamentally based on enzyme-mediated DNA replication. In PCR, primer-mediated enzymes are used to raise a small piece of DNA. DNA Polymerase generates new complementary DNA strands to the template. The DNA polymerase can only add a nucleotide to an already existing 3'-OH group. As a result, a primer is required.

Primers- A Quick Look

Primers are short sections of DNA that target specific sequences and aid in the identification of a specific part of the genome, such as a gene. Primers normally have 18 to 25 nucleotides. They can be made in a specialized lab and are utilized in a variety of applications. You can make numerous new copies of DNA from a template, for example. You can make helpful alterations to the template DNA and utilize them to examine DNA by distinguishing between different versions of different copies.

Application of PCR

The following are examples of PCR applications:

Medicine

Forensic science

Genetics and research

Designing a PCR Primer

When performing a PCR reaction, oligonucleotide primers are required. Primers that are complementary to the template region of DNA must be designed. They're made by combining nucleotides in a chemical reaction. When adding a nucleotide one at a time, the reactive groups must be deliberately blocked and unblocked frequently. Primers' key characteristic is that they must match sequences on the template molecule (must be complementary to the template strand). Primers are not required to completely match the template strand; nonetheless, the 3' end of the primer must match the template DNA strand for elongation to occur. The 3' end of the primer is normally guanine or cytosine, while the 5' end usually has numerous nucleotide stretches. The hybridized primers' 3' ends must also point in the same direction.

The primer's size is also quite essential in PCR primer synthesis. Short primers are most commonly used to amplify a small, basic DNA segment. In contrast, a lengthy primer is used to amplify a eukaryotic genomic DNA sample. A primer should not, however, be either excessively long (> 30-mer primers) or too short. Short primers result in nonspecific, erroneous DNA amplification, while long primers result in a slower hybridizing rate. The DNA fragment that needs to be amplified should be between 1 and 10 kB in size on average.

To avoid internal folding, the primer's structure should be basic and have no internal secondary structure. Also, primer-primer annealing, which produces primer dimers and disturbs the amplification process, must be avoided. For broader pairing capabilities, a nucleotide-based molecular insert (inosine) can be used instead of a conventional nucleotide.

Finding the right online portal for PCR Primer Synthesis

Bio Basic is a dedicated life science research project support company. We help researchers to continue their projects keeping the research expenses within a moderate budget. Our aim is to provide unparalleled quality of services for Gene synthesis, Oligo synthesis, protein production, peptide synthesis, antibody production, DNA sequencing, and more at the most competitive rates.

We offer an extensive range of PCR-related reagents to help our clients with their research needs. You can choose any preferred product for PCR primer synthesis.

For any product-related queries, don’t hesitate to call our team at 1 (905) 474‐4493.