Table 1.
Rule name | Criterion |
---|---|
Distance from TSS | −100 - −1000 |
CpG islands | avoid |
Target size | 19 nt |
Target GC content | 40-60% |
Consecutive nucleotides | <= 5 |
Simple repeats (di or tri-nucleotide) | avoid |
CpGs in target | <= 1 |
1st and 2nd nucleotides | preferably G or C |
18th nucleotide | A or T |
19th nucleotide | A |
20-23th nucleotides | preferably A or T |