SalI
G▾TCGAC5′ overhang (4)
SalI is a 6 bp-recognition restriction enzyme. It runs best in rNEBuffer 3.1 at 37°C, and is prone to star activity under non-standard conditions.
NEB buffer activity
| Buffer | % Activity |
|---|---|
| rNEBuffer 1.1 | 0% |
| rNEBuffer 2.1 | 0% |
| rNEBuffer 3.1best | 100% |
| rCutSmart | 0% |
- Incubation
- 37°C
- Heat inactivation
- 65°C, 20 min
- Star activity
- High propensity
- Methylation blocked
- CpG
Strongly buffer-dependent (only NEBuffer3.1). GTCGAC has CG; CpG blocks. Prone to star activity.
Find SalI sites in your own sequence
Paste a sequence below and this scans it for every SalI recognition site — the same engine behind the full Restriction Sites tool, scoped to just this one enzyme.
Frequently asked questions
What does SalI recognize?
SalI recognizes the 6 bp sequence GTCGAC (5′→3′), cutting the top strand between position 1 and 2 within the site to leave a 5′ overhang of 4 bases.
What buffer should I use for SalI?
rNEBuffer 3.1 gives the highest activity (incubate at 37°C).
Does SalI have star activity?
Yes, and it has a notably high propensity for it — under non-standard conditions (excess enzyme/glycerol, long incubation, low ionic strength) it can cleave at sites resembling but not matching GTCGAC.
Is SalI blocked by DNA methylation?
Yes — blocked by CpG methylation. Use methylation-free template (e.g. a dam⁻/dcm⁻ strain) if this matters for your digest.
Can I heat-inactivate SalI?
Yes — 65°C for 20 minutes.