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modified bases in oligo/primer?

Hi All,

Can someone remind me what the Asterix (*), such as those appearing at the end of the line, mean in an oligo such as:

CAAGCAGAAGACGGCATACGAGATNNNNNNNNGTGACTGGAGTTCAGAC GTGTGCTCTTCCGATCTTCTACTATTCTTTCCCCTGCA*C*T*G*T

Best regards,

Yongde

chemistry dna

1 answer

It usually stands for modified bases. I know them as PTO bonds when you order primers/oligos, but probably it is any modified base and you need to check the legend of the sequence provider.

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