Does anyone have feedback on the Kapa HyperPlus enzymatic DNA fragmentation vs Covaris? I have access to a Covaris but the enzymatic method would be much more convenient... assuming it works well!
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Almost all suppliers in their technotes claim that their enzymatic DNA fragmentation gives similar or better results than Covaris or their competitors. My comments:
1- Shearing is not sensitive to buffer or DNA quality to some extent, but all the enzymatic methods require or prefer a particular buffer for best results.
2- Buffer requirement is really annoying for core centres dealing with DNA from different clients
3- The enzymatic methods are time or quantity sensitive requiring special attention
4- These methods are acceptable for labs that do not have access to Covaris or desire fast high throughput fragmentation -
I agree with nucacidhunter. Covaris shearing will produce much more consistent size distributions across all your samples. When I tried to use KAPA fragmentation enzyme, size distributions were highly sensitive to the input DNA concentrations. Samples with small DNA concentrations (<100ng) required much shorter time for fragmentation than those with ~500ng. And samples with DNA concentration >750ng always produced libraries with a large portion of long fragments. Therefore, be prepared to spend some time and reagents for calibration before you actually start doing your libraries with enzymatic fragmentation.Comment
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NGS has revolutionized clinical microbiology by offering new ways to identify and surveil pathogens without prior knowledge of the target. One popular approach is 16S rRNA and ITS amplicon sequencing, which targets specific microbial markers. But studies are increasingly incorporating shotgun metagenomics, a technique that sequences all DNA from a sample without targeting specific microbial markers. This approach allows more detailed taxonomic classification,...10-30-2026, 06:46 AM
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