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RNAarecrazy 09-03-2014 07:55 AM

Reply from NEB re: ssDNA library prep
 
I thought this might be helpful for some of you.

===========================================
Thank you for contacting NEB Technical Support.


Dear Chris,

Your question and answer are below:

Question:
Sent: Thursday, August 28, 2014 3:28 PM
To: Info
Subject: NEBNext RNA Library kit for ssDNA?

Hi NEB,
Can I adapt the NEBNext RNA library to generate library using ssDNA as starting material? I assume I can just start the protocol beginning from the second strand cDNA synthesis. Correct me if I am wrong..
Thank you



Answer:
In the NEBNext RNA library prep kits, the second strand cDNA synthesis has been optimized to generate a second strand cDNA from the DNA-RNA hybrid resulting from the first strand synthesis step.

During second strand synthesis, RNA primers are generated by the RNase H enzyme present in the second strand synthesis enzyme mix. RNase H nicks the RNA template, creates RNA primers. This primers are extended by DNA Pol I present in the enzyme mix. Finally, E.coli DNase Ligase close the nicks.

In your case, since you already have ssDNA, I would suggest to make double stranded DNA using random primers. Then take that DNA into the E7370 - NEBNext® Ultra™ DNA Library Prep Kit for Illumina®.

I hope this is helpful. Please contact us back if you have further questions.
Deyra

BioDynami 02-19-2020 09:26 AM

There is a kit for ssDNA: NGS Single Stranded DNA Library Prep Kit from BioDynami:
https://www.biodynami.com/ngs_single...brary_prep_kit


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