Sma I
SmaI is a restriction enzyme purified from Serratia marcescens (ATCC 49779).
Reagents supplied: 10x R5 and 10x EQ buffer
Unit definition: One unit is the amount of enzyme required to digest 1 μg of Lambda DNA (Hind III digest) in 60 min at 25oC in a total reaction volume of 50 μl.
(SKUs: RE037S, RE037L, REc037S, REc037L)
Categories of Products
Other Products in Category
- Alu I
- ApaL I
- Asu II (isoschizomer)
- Ava II (isoschizomer)
- BamH I
- Bcl I
- Bgl I
- Bgl II
- BseB I (BstN I isoschizomer)
- BseC I (Cla I isoschizomer)
- BshF I (Hae III isoschizomer)
- BstE II
- CspA I (Age I isoschizomer)
- EcoR I
- EcoR V
- Hind III
- Hinf I
- Hpa I
- Kpn I
- Mbo I
- MspC I (Afl II isoschizomer)
- Nae I
- Nco I
- Nhe I
- Not I
- Nru I
- PspP I (Sau96 I isoschizomer)
- Pst I
- Pvu II
- Rsa I
- Sal I
- Sau3A I
- Sca I
- Sfi I
- SgrB I (Sac II isoschizomer)
- SlaI (Xho I isoschizomer)
- Sma I
- Sph I
- SseB I (Stu I isoschizomer)
- Ssp I
- Sst I (Sac I isoschizomer)
- Sty I
- Taq I
- XbaI
Product Details
SmaI is a restriction enzyme purified from Serratia marcescens (ATCC 49779).
Reagents supplied: 10x R5 and 10x EQ buffer
Unit definition: One unit is the amount of enzyme required to digest 1 μg of Lambda DNA (Hind III digest) in 60 min at 25oC in a total reaction volume of 50 μl.
Digest Guidelines
- Standard reaction conditions: In order to overcome DNA source variability, a ~10 fold overdigest is suggested:
| 10U Sma I | 1μl |
| 10x EQ buffer | 5μl |
| DNA substrate | 1μg |
| Sterile ultrapure water | Up to 50 μl |
- Speed Digest reaction: Incubate for 15 minutes at 25oC as in standard reaction in 1x eQ buffer (20 mM Tris-acetate (pH 7.9 @ 25oC), 10 mM Mg-acetate, 50 mM K-acetate, 100 μg/ml BSA).
- Activity(%) in EnzyQuest buffers -Double digest tips
| R1 | R2 | R3 | R4 | EQ |
| <10 | <10 | <10 | <10 | 100 |
Reactions were performed as for unit definition reaction. The above data could be used as guideline for double digest reactions. Our enzymes are also active and compatible in buffer systems from other vendors.
Heat inactivation: 65oC for 20 minutes
Methylation Sensitivity:
- dam methylation: Not sensitive
- dcm methylation: Not sensitive
- CpG methylation: Blocked
Unit calculation assay conditions:
- 1x EQ buffer
- Lambda DNA
- Incubation at 25oC
Storage conditions:
- 50 mM KCl
- 10 mM Tris-HCl (pH 7.4)
- 0.1 mM EDTA
- 1 mM dithiothreitol
- 200 μg/ml BSA
- 50% glycerol
- Store at -20oC
Non-specific nuclease activity: 150 units of Sma I do not produce any unspecific cleavage products after 16 hrs incubation with 1 μg of Lambda DNA at 25oC.
Re-ligation and recut: After 50-fold overdigestion with Sma I, greater than 95% of the DNA fragments can be ligated and recut with this enzyme.
