I tried to do some 4C sequencing pilots on Nextseq500 platform. I've used these primers to finally amplify my library before sequencing:
AATGATACGGCGACCACCGAACACTCTTTCCCTACACGACGCTCTTCCGATCT | Truseq Reading adapter
CAAGCAGAAGACGGCATACGA | Non-reading adapter
these sequences are used by many people to do 4C libraries compatible with illumina.
amplification went well, qPCR test went OK (sequences necessary for cluster generation and sequencing primer is there), we size selected the library to remove all above 700bp...
Problem is that the run failed twice, with no clusters detected. Machine is OK, all runs before and after these samples were OK. technicians are very experienced, last months there were no runs failing due to their mistakes so expecting that they did something stupid just for these 2 runs is not very probable. PhiX spike in worked...
Can someone have a hint what went wrong?
AATGATACGGCGACCACCGAACACTCTTTCCCTACACGACGCTCTTCCGATCT | Truseq Reading adapter
CAAGCAGAAGACGGCATACGA | Non-reading adapter
these sequences are used by many people to do 4C libraries compatible with illumina.
amplification went well, qPCR test went OK (sequences necessary for cluster generation and sequencing primer is there), we size selected the library to remove all above 700bp...
Problem is that the run failed twice, with no clusters detected. Machine is OK, all runs before and after these samples were OK. technicians are very experienced, last months there were no runs failing due to their mistakes so expecting that they did something stupid just for these 2 runs is not very probable. PhiX spike in worked...
Can someone have a hint what went wrong?
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