Contents
What are anchored primers?
Anchored Oligo(dT)20 Primer is a primer mixture consisting of a string of 20 deoxythymidylic acid residues followed by dV (either dG, dA, or dC) and then by dN (dA, dT, dG, or dC). Anchored Oligo(dT)20 Primer is recommended for use in cDNA labeling protocols and in RT-PCR.
What is the sequencing primer?
A primer is a short nucleic acid sequence that provides a starting point for DNA synthesis. In living organisms, primers are short strands of RNA. These DNA primers are commonly used to perform the polymerase chain reaction to copy pieces of DNA or for DNA sequencing.
What is a poly T tail?
Polyadenylation is the addition of a poly(A) tail to an RNA transcript, typically a messenger RNA (mRNA). The poly(A) tail consists of multiple adenosine monophosphates; in other words, it is a stretch of RNA that has only adenine bases.
What are hexamer primers?
Random Hexamer Primers are commonly used for priming single-stranded DNA or RNA for extension by DNA polymerases or reverse transcriptases. During cDNA generation, random priming gives random coverage to all regions of the RNA to generate a cDNA pool containing various lengths of cDNA.
How much primer do I need for sequencing?
Dilute your sequencing primer to 5 µM (pmol/µl) using water. You will need 1 µl (minimum volume of 10 µl) for each sequencing reaction. If you want to use a GENEWIZ Universal Primer, we will add it for you at no charge. Remember that only one primer is used in a sequencing reaction.
What is the function of 5 caps and 3 poly A tails?
The 5′ cap protects the nascent mRNA from degradation and assists in ribosome binding during translation. A poly (A) tail is added to the 3′ end of the pre-mRNA once elongation is complete.
What is the primer sequence of anchored oligo 20?
Anchored Oligo(dT) 20 Primer is a primer mixture consisting of a string of 20 deoxythymidylic acid residues followed by dV (either dG, dA, or dC) and then by dN (dA, dT, dG, or dC). Due to the variable end-sequence, the primer is anchored to the 5´-end of the poly(A) tail of mRNA and prevents priming within the poly(A) tail.
Which is the best primer to use for sequencing?
M13rev 5′ CACACAGGAAACAGCTATGACCAT 3′ 1233rev 5′ AGCGGATAACAATTTCACACAGGA 3′ T7long 5′ GTAATACGACTCACTATAGGGC 3′ T7short 5′ TAATACGACTCACTATAGGG 3′ T7term 5′ GCTAGTTATTGCTCAGCGG 3′ T3 5′ AATTAACCCTCACTAAAGGGA 3′ SP6 5′ ATTTAGGTGACACTATAG 3′ SP6Long 5′ ATTTAGGTGACACTATAGAATAC 3′ BGHrev 5′ TAGAAGGCACAGTCGAGG 3′ pGEXFor 5′ CTGGCAAGCCACGTTTGGTG 3′
What are the characteristics of a good primer?
It is important that a primer has the following characteristics: A melting temperature (Tm) in the range of 50 C to 65 C Absence of dimerization capability Absence of significant hairpin formation (>3 bp) Lack of secondary priming sites Low to moderate specific binding at the 3′ end (avoid high GC content to prevent mispriming)
Which is the best primer for BAC templates?
For large templates such as BAC’s, PAC’s and cosmids which can have higher levels of impurities, we recommend the use of the SP6long primer instead of the standard SP6 primer, which has a marginally low Tm.