Hi all, anybody has experience with using a 0.5 nM 16s library concentration (instead of 2nM) on the MiSeq ? The NextSeq500 has this protocol (updated October 2014, so more recent) and we thought to add the 200mM TRis buffer PH 7.0 too to hydrolyse the higher NaOH concentration needed initially. Thanks
Seqanswers Leaderboard Ad
Collapse
Announcement
Collapse
No announcement yet.
X
-
Hi NAH, Illumina TechSupp replied as such on the use of NextSeq500 protocol:
"All of Illumina platforms use isothermal amplification for clustering, and sequencing by synthesis for sequencing. So the diluting and denaturing process is similar for all platforms; with the exception of volumes and concentrations, that should be modified to meet the optimal cluster density and data yields as per the specifications of your instrument of choice.
So, yes you can use the same low concentration diluting and denaturing protocol for the MiSeq keeping in mind that the loading volumes in lower (600ul vs 1300ul), and your loading concentration should be higher (6-20pM vs 1.8pM).
For more information please see:
Preparing Libraries for Sequencing on the MiSeq http://support.illumina.com/content/...15039740-d.pdf
Denaturing and Diluting Libraries for the NextSeq 500 http://support.illumina.com/content/...-15048776d.pdf
"
So we made a 0.5 nM library now, used the 200mM Tris-HCL pH 7.0 additional step to neutralize the increased NaOH concentration and loaded all at 12 pM end concentration today (we tested 4 and 8 pM already with a bit too low clustering, 5 % PhiX) . First results 800K Clusters, so looking good ! Now waiting for the Q30 % in the next days. Illumina should update more regularly their protocols...
To be continued...
Comment
Latest Articles
Collapse
-
by seqadmin
The field of epigenetics has traditionally concentrated more on DNA and how changes like methylation and phosphorylation of histones impact gene expression and regulation. However, our increased understanding of RNA modifications and their importance in cellular processes has led to a rise in epitranscriptomics research. “Epitranscriptomics brings together the concepts of epigenetics and gene expression,” explained Adrien Leger, PhD, Principal Research Scientist...-
Channel: Articles
04-22-2024, 07:01 AM -
-
by seqadmin
Proteins are often described as the workhorses of the cell, and identifying their sequences is key to understanding their role in biological processes and disease. Currently, the most common technique used to determine protein sequences is mass spectrometry. While still a valuable tool, mass spectrometry faces several limitations and requires a highly experienced scientist familiar with the equipment to operate it. Additionally, other proteomic methods, like affinity assays, are constrained...-
Channel: Articles
04-04-2024, 04:25 PM -
ad_right_rmr
Collapse
News
Collapse
Topics | Statistics | Last Post | ||
---|---|---|---|---|
Started by seqadmin, Today, 08:06 AM
|
0 responses
11 views
0 likes
|
Last Post
by seqadmin
Today, 08:06 AM
|
||
Started by seqadmin, 04-30-2024, 12:17 PM
|
0 responses
13 views
0 likes
|
Last Post
by seqadmin
04-30-2024, 12:17 PM
|
||
Started by seqadmin, 04-29-2024, 10:49 AM
|
0 responses
19 views
0 likes
|
Last Post
by seqadmin
04-29-2024, 10:49 AM
|
||
Started by seqadmin, 04-25-2024, 11:49 AM
|
0 responses
26 views
0 likes
|
Last Post
by seqadmin
04-25-2024, 11:49 AM
|
Comment