repeated handling
and multiple freeze/thaw cycles.
Figure 1.
SDS-PAGE Gel of Typical Lot
70–95% (densitometry)
PTPN12
34
43
72
95
130
170
56
Figure 2.
Specific Activity of Typical
pH 7.5, A620nm, Light path = 1 cm
METHOD: Turbidimetric Rate Determination
REAGENTS:
A. 50 mM Tris HCl Buffer with 145 mM Sodium Chloride, pH 7.5 at 37�C
(Prepare 1 liter in deionized water using
pH 7.5, A620nm, Light path = 1 cm
METHOD: Turbidimetric Rate Determination
REAGENTS:
A. 50 mM Tris HCl Buffer with 145 mM Sodium Chloride, pH 7.5 at 37�C
(Prepare 1 liter in deionized water using
stored in 50 mM Tris-HCl, pH 7.5, 150 mM NaCl,
10 mM glutathione, 0.1 mM EDTA, 0.25 mM DTT,
0.1 mM PMSF, and 25% glycerol.
Molecular mass: ∼96 kDa
Purity: 70–95% (SDS-PAGE, see Figure 1)
Specific
at 37 °°°°C.
50 mM Tris-HCl
100 mM NaCl
10 mM MgCl2
1 mM dithioerythritol (DTE)
pH 7.5
Absence of non-specific endonuclease activities
1 µg λ DNA is incubated for 16 hrs. in 50 µl of
9802
Ethanol, 95+% E 7148
20X Saline-sodium citrate (SSC) buffer S 6639
Slide staining chambers/racks S 6141
Orbital shaker (The Belly Dancer) Z36,760-5
Preparation Instructions
1. Printing of
Nde II Storage and Dilution Buffer Composition
20 mM Tris-HCl
50 mM NaCl
0.1 mM EDTA
1 mM dithioerythritol
0.02% Thesit (v/v)
50% (v/v) glycerol
pH 7.5
Quality Control Testing
2x Digestion
water.
7. Reagent Alcohol, 95% for 10 dips.
8. Counterstain in Papanicolaou Stain OG-6 for 1.5 minutes.
9. Reagent Alcohol, 95% for 10 dips.
10. Papanicolaou Stain EA 50, or Papanicolaou Stain EA 65
Unit Definition
One unit is the enzyme activity that completely cleaves
1 µg λDNA in 1 hr. at 37 °C in a total volume of 50 µl of
Buffer SB for restriction endonucleases.
Specificity
Ava I recognizes
°C.
1. Begin heating distilled deionized water to 95-100 °C
in a clean container filled with sufficient water to
cover slides in a slide staining rack.
2. Fill a humidity chamber with ~50 ml water
generates fragments with 5'-cohesive termini.1
Alw 44 I is an isoschizomer to Sno I.
Comments
Digestion Buffer SA is supplied as a 10x concentrate.
1-50 units of Alw 44 I can be heat inactivated
of
precipitation in the gamma region at 50 and 250 J�RI
immunoglobulin versus anti-monkey whole serum and
anti-monkey IgG.
Purity (SDS-PAGE): Not less than 95%.
Sigma warrants that its products conform
pH 7.5, A620nm, Light path = 1 cm
METHOD: Turbidimetric Rate Determination
REAGENTS:
A. 50 mM Tris HCl Buffer with 145 mM Sodium Chloride, pH 7.5 at 37EC
(Prepare 1 liter in deionized water using
Activity: 10,000 units/ml
Cutting: 100%
Ligation: >95%
Recutting: >95%
No degradation detected with >50 units for 16 hrs.
Fold over digestion: 800 (50 units x 16 hrs.)
Package Size: 250 units
Unit
with 1 M NaOH.)
B. 0.25 mM Nα-Benzoyl-L-Arginine Ethyl Ester Solution (BAEE)
(Prepare 50 ml in Reagent A using Nα-Benzoyl-L-Arginine Ethyl Ester, Hydrochloride, Sigma
Prod. No. B-4500.)
C. 1 mM Hydrochloric
with 1 M NaOH.)
B. 0.25 mM Nα-Benzoyl-L-Arginine Ethyl Ester Solution (BAEE)
(Prepare 50 ml in Reagent A using Nα-Benzoyl-L-Arginine Ethyl Ester, Hydrochloride, Sigma
Prod. No. B-4500.)
C. 1 mM Hydrochloric
with 1 M NaOH.)
B. 0.25 mM Nα-Benzoyl-L-Arginine Ethyl Ester Solution (BAEE)
(Prepare 50 ml in Reagent A using Nα-Benzoyl-L-Arginine Ethyl Ester, Hydrochloride, Sigma
Prod. No. B-4500.)
C. 1 mM Hydrochloric
g/l for the first calibration solution.
Select the “Absorbance” field in the “1“ line. Fill
calibration solution 1 into a 50-mm rectangular
cell and insert cell into the cell compartment. The
measurement
stored in 20 mM MOPS, pH 7.5,
50 mM NaCl, 10 mM glutathione, 0.25 mM DTT,
0.1 mM PMSF, and 30% glycerol.
Molecular mass: ∼93 kDa
Purity: 70–95% (SDS-PAGE, see Figure 1)
Specific Activity: 386–522
One unit is the enzyme activity that completely cleaves
1 µg λDNA in 1 hr. at 37 °C in a total volume of 50 µl of
Buffer SH for restriction enzymes.1 µg pBR322 DNA is
digested completely by 2 units of Eco
Avoid repeated handling
and multiple freeze/thaw cycles.
Figure 1.
SDS-PAGE Gel of Typical Lot
50–95% (densitometry)
References
1. Halazonetis, T.D. et al., c-Jun dimerizes with itself
and with
deionized water.)
G. 50 mM Tris HCl Buffer, pH 8.5 at 30°C (Enzyme Diluent)
(Prepare 50 ml in deionized water using Trizma Base, Sigma Prod. No. T-1503. Adjust to
pH 8.5 at 30°C with
1 M HCl.)
H. Glucokinase
mM Tris-HCl
10 mM MgCl2
1 mM dithioerythritol (DTE)
pH 7.5
Quality Control Testing
Absence of unspecific endonuclease activities:
1 µg λDNA is incubated for 16 hrs. in 50 µl buffer SL
with excess
units/ml
Cutting: 100%
Ligation: >95%
Recutting: >95%
No degradation detected with >10 units for 16 hrs.
Fold over digestion: 160 (10 units x 16 hrs.)
Package Size: 50 units
Unit Definition
One unit