Converting cDNA to Protein Sequence: Methods and Recommendations

In summary, the conversation involves someone seeking help with obtaining a protein sequence from a cDNA sequence. They have experience with obtaining cDNA through PCR and are wondering how to use it to get the protein sequence. The recommended approach is to sequence the cDNA and then use an online translation tool to read the protein sequence. The speaker offers to provide more detail on any of the steps if needed.
  • #1
gravenewworld
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Has anyone here done this before? If so, kit recommendations and protocol? Any help would be awesome. Thanks!
 
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  • #2
What exactly do you want to do? Do you have a cDNA sequence and you want to figure out the protein sequence that it codes for?
 
  • #3
Yes exactly. Getting the cDNA is easy, I have experience with that for PCR, but instead of doing PCR, I was wondering how you can use your cDNA to get the protein sequence. My PI said it should be easily doable. I'm not sure how though.
 
  • #4
Once you have the cDNA sequence, you just need to sequence it (send a sample of the cDNA along with the appropriate primers to a DNA sequencing facility/company). You can the just read the protein sequence from the sequence you get (for example, using an online translation tool such as http://www.bioinformatics.org/sms2/translate.html

Let me know if you want more detail on any of these steps.
 
  • #5


Yes, I have experience with converting cDNA to protein sequence. The most common method is to use a commercial cDNA synthesis kit, such as the SuperScript III First-Strand Synthesis System. This kit includes all the necessary reagents and protocols for efficient cDNA synthesis. As for the protocol, it involves reverse transcription of RNA using a reverse transcriptase enzyme, followed by amplification of the cDNA using polymerase chain reaction (PCR). Once the cDNA is amplified, it can be sequenced and translated into a protein sequence using bioinformatics tools. I recommend consulting the manufacturer's instructions for specific details on the protocol. I hope this helps!
 

Related to Converting cDNA to Protein Sequence: Methods and Recommendations

1. What is cDNA and how is it different from DNA?

cDNA, or complementary DNA, is a synthesized version of DNA that contains only the coding sequences of genes. It is made from mRNA using the enzyme reverse transcriptase. Unlike DNA, cDNA does not contain introns or non-coding regions.

2. How is a cDNA sequence translated into a protein sequence?

In order to translate a cDNA sequence into a protein sequence, the cDNA is first transcribed into mRNA. The mRNA is then read by ribosomes, which use the genetic code to assemble amino acids into a polypeptide chain. This chain is then folded into a protein.

3. What is the importance of cDNA in genetic research?

cDNA is important in genetic research because it allows scientists to study only the coding regions of genes, which are responsible for the production of proteins. This can help identify genes that are expressed in certain tissues or diseases, and can also be used to produce recombinant proteins for various applications.

4. Can a cDNA sequence be used to predict the structure of a protein?

Yes, a cDNA sequence can be used to predict the structure of a protein. This is because the sequence of amino acids in a protein is determined by the sequence of nucleotides in the cDNA that codes for it. By using computational methods, scientists can predict the folding and structure of a protein based on its amino acid sequence.

5. Are there any limitations to using cDNA to study genes and proteins?

One limitation of using cDNA is that it only represents the coding sequences of genes, which means that it does not capture any potential regulatory regions or non-coding RNA sequences. Additionally, cDNA sequences may not accurately represent the entire transcriptome of an organism, as some mRNA molecules may not be efficiently converted into cDNA. Finally, cDNA sequences may contain errors due to reverse transcriptase activity or PCR amplification.

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