PCR cycle steps, protocol using SuperScript II reverse transcriptase (Life Technologies) and Taq polymerase, Gene specific primer, T17 Adapter primer and an Adapter primer. Dr.Dawson, Nottingham. - [Read 3' Rapid Amplification of cDNA Ends (RACE) Protocol]
To generate "3'-end" partial cDNA clones, mRNA is reverse-transcribed using a "hybrid" primer (Qtotal, QT) that consists of two mixed bases (GATC/GAC followed by [T]17) and a unique 35-base oligonucleotide sequence (QI-QO). Amplification is then performed using a primer containing part of this sequence (Qouter, Qo) (which now binds to each cDNA at its 3'-end) and a primer derived from the gene of interest, GSP1 (gene-specific primer 1). - [Read 3'-End cDNA Amplification Using Classic RACE Protocol]
Can also use 96-well plates. First Strand cDNA Synthesis, First Size selection, second 2nd strand cDNA synthesis. Bay Area Functional Genomics Consortium, UCSF. - [Read 5' RACE Protocol For Generation of Seq. Tags]
To generate "5'-end" partial cDNA clones using classic RACE, the first-strand products are generated by reverse transcription (primer extension) from a known gene-specific primer (GSP-RT). Then, a poly(A) tail is appended using terminal deoxynucleotidyltransferase (Tdt) and dATP. Amplification is carried out using three primers. - [Read 5'-End cDNA Amplification Using Classic RACE Protocol]
New RACE, a variation of RNA ligase-mediated-RACE (RLM-RACE) (Liu and Gorovsky 1993) departs from classic RACE (see 5'-End cDNA Amplification Using Classic RACE) in that an "anchor" primer is attached to the 5'-end of the mRNA before the reverse transcription step; hence the anchor sequence becomes incorporated into the first-strand cDNA if, and only if, the reverse transcription proceeds through the entire length of the mRNA of interest. - [Read 5'-End cDNA Amplification Using New RACE Protocol]
Using AFPredictor, it was demonstrated that ‘ordered surface carbons’ (OSCs) are a distinguishing feature of AFPs and, more specifically, their ice-binding surfaces. AFPredictor identified AFPs from within a large set of structures with greater than 99% specificity. Furthermore, it was used to identify a novel ice-binding protein by screening a library of homology modeled structures based on cDNA sequences obtained from cold-acclimated winter rye (Secale cereale). - [Read A Computational Screening protocol for Antifreeze/Ice-Structuring Proteins]
Alkaline agarose gels are used chiefly to measure the size of first and second strands of cDNA (Construction of cDNA Libraries Stage 1: Synthesis of First-strand cDNA Catalyzed by Reverse Transcriptase) and to analyze the size of the DNA strand after digestion of DNA-RNA hybrids with nucleases such as S1. - [Read Alkaline Agarose Gel Electrophoresis Protocol]
This protocol describes the labeling of eukaryotic RNA with aminoallyl labeled
nucleotides via first strand cDNA synthesis followed by a coupling of the
aminoallyl groups to either Cyanine 3 or 5 (Cy 3/Cy5) fluorescent molecules. Hasseman. TIGR Microarr - [Read Amino-allyl Labeling]
An oligodeoxynucleotide primer hybridized to mRNA is extended by an RNA-dependent DNA polymerase to create a cDNA copy that can be amplified by PCR. Depending on the purpose of the experiment, the primer for first-strand cDNA synthesis can be specifically designed to hybridize to a particular target gene, or a general primer such as oligo(dT) can be used to prime cDNA synthesis from essentially all mammalian mRNAs - [Read Amplification of cDNA Generated by Reverse Transcription of mRNA Protocol]
Protocol uses a single thermostable RNA polymerase to perform high-specificity RT-PCR. A high-temperature RT reaction is followed by PCR amplification of the cDNA using a single thermostable poymerase, the GeneAmp AccRT RNA PCR enzyme from Applied Biosystems. The high temperature of the RT reaction enhances the specificity of primer binding and also reduces secondary structure in the template, thereby increasing the efficiency of polymerization. - [Read Amplification of RNA: High-Temperature Reverse Transcription and DNA Amplification with a Magnesium]
This stage achieves four goals: polishing the ends of double-stranded DNA, ligation of synthetic linkers or adaptors, digestion of the attached linkers to create cohesive termini, and preparing the cDNA for cloning. - [Read Attachment of Linkers or Adaptors for Construction of cDNA Libraries]
The ability to synthesize RNA in the lab is critical to many techniques.Radiolabeled and nonisotopically labeled RNA probes, generated in small scale transcription reactions can be used in blot hybridizations and nuclease protection assays. This article includes information on: Requirements For Transcription, RNA Phage Polymerases, Template Options: Plasmids, PCR Products, Oligonuclotides and cDNA, Sense or Antisense, Conventional Or Large Scale Synthesis, Products for In Vitro Transcription. - [Read Basic Information on In Vitro Transcription]
This method, for the selective amplification of full-length cDNA ends, involves the addition of an adapter during reverse transcription. This method takes advantage of the propensity of Moloney murine leukemia virus reverse transcriptase (MMLV RT) to append two to four cytosines to the 3'-end of newly synthesized cDNA strands. The additional residues are added when the enzyme reaches the 5'-cap structure at the end of the mRNA template. - [Read Cap-Switching RACE Protocol]
cDNA Library Screening Protocol - ZAPII Detailed Protocol. XLI-Blue MRF' and cDNA phage library screening. Dr. Laurie. University of Virginia Health Science Center - [Read cDNA Library Screening Protocol - ZAPII]
Protocol for cDNA synthesis and cloning cDNA into plasmid vector. 1st Strand cDNA Synthesis, and determine the efficiency of first strand cDNA synthesis. Also includes
second Strand cDNA Synthesis.
Dr.Frank - [Read cDNA Synthesis and Cloning]
This protocol describes how to use DIG Chem-Link to directly label any DNA [e.g. plasmids, PCR products, cDNA prepared
from mRNA] or RNA (e.g. total RNA, poly(A)+ mMRNA). The
DIG Chem-Link or Biotin Chem-Link may also be used to label oligonucleotides. Includes: Required Purity of DIG Chem-Link Templates; Direct DIG Labeling of mRNA or cDNA with DIG Chem-Link; Key Product Required for Direct Labeling of DNA or RNA; Estimating the Yield of DIG-labeled Nucleic Acids. - [Read Chem-Link Labeling of DNA or RNA with DIG or Biotin Protocol]
DNA microarrays are an ordered arrangement of DNA molecules complementary to genes of interest that are "spotted" by robotic equipment onto a glass slide substrate. The expression of genes in cells can be monitored with microarrays by preparing cDNA from the mRNA of cells of interest and measuring the hybridization to the microarray. This protocol describes the labeling of genomic DNA for use as a probe for hybridization to the cDNA spotted on the array.
This Microarray Protocol Preparation of Fluorescent DNA Probes from Human mRNA protocol describes the production of probes labeled with the fluorescent dyes, Cy3 and Cy5, following the synthesis of cDNA from human mRNA and the hybridization of the probes to DNA microarrays.
3' Rapid Amplification of cDNA Ends RACE Using PCR Protocol. This protocol contains the steps for 3' end rapid amplification of mRNA by PCR. The first-strand cDNA is synthesized from total or poly(A+) RNA by priming from the poly-A tail of the mRNA using a oligo (dT) adaptor primer. The cDNA is then amplified via PCR using a gene-specific primer and an adaptor primer.