DNALIG-RO
Roche
T4 DNA Ligase
solution, from Escherichia coli(NM 989), suitable for activity assay
Synonym(s):
dna ligase, t4
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About This Item
UNSPSC Code:
12352204
Recommended Products
biological source
Escherichia coli (NM 989)
Quality Level
recombinant
expressed in E. coli
description
recombinant form of the enzyme from T4 phage
form
solution
specific activity
~3000 units/mg protein
packaging
pkg of 100 U (10481220001 [1 U/μl])
pkg of 500 U (10716359001 [1 U/μl])
pkg of 500 U (10799009001 [5 U/μl])
manufacturer/tradename
Roche
parameter
4-22 °C optimum reaction temp.
technique(s)
activity assay: suitable
optimum pH
7.2-7.8
storage temp.
−20°C
General description
T4 DNA Ligase catalyzes the formation of phosphodiester bonds between neighboring 3′-hydroxyl- and 5′-phosphate ends in double-stranded DNA. Single-stranded nicks in double-stranded DNA are also closed by T4 DNA Ligase.
Contents
T4 DNA Ligase, supplied with 10x concentrated ligation buffer that includes ATP.
Contents
T4 DNA Ligase, supplied with 10x concentrated ligation buffer that includes ATP.
Specificity
Heat inactivation: The enzyme can be inactivated by heating (65 °C, 10 minutes).
Application
Ligation of sticky- and blunt-ended DNA fragments.
Quality
Quality
Tested for the absence of deoxyribonucleases and exonucleases, according to the current Quality Control procedures.
Tested for the absence of deoxyribonucleases and exonucleases, according to the current Quality Control procedures.
Unit Definition
One unit of T4 DNA ligase is the amount of enzyme activity that converts 1 nmol 32P from pyrophosphate into Norit-absorbable material in 20 minutes at +37 °C. One unit corresponds to 0.2 U determined in the exonuclease III resistance assay. Dilution buffer: 50 mM Tris-HCl, 10 mM dithioerythritol, bovine serum albumin, 500 μg/ml, pH 7.6 (+25 °C).
Volume Activity: 1 x 103 U/ml; 5 x 103 U/ml
Volume Activity: 1 x 103 U/ml; 5 x 103 U/ml
Preparation Note
Activator: Mg2+ (10mM), DTT
Working solution: For dilution of the enzyme Roche recommends using a buffer containing the components of the storage buffer: 20 mM Tris-HCl, 60 mM KCl, 1 mM EDTA, 5 mM dithoerythritol, 50% glycerol (v/v), pH 7.5 (4 °C).
Working solution: For dilution of the enzyme Roche recommends using a buffer containing the components of the storage buffer: 20 mM Tris-HCl, 60 mM KCl, 1 mM EDTA, 5 mM dithoerythritol, 50% glycerol (v/v), pH 7.5 (4 °C).
Other Notes
For life science research only. Not for use in diagnostic procedures.
Storage Class Code
12 - Non Combustible Liquids
WGK
WGK 1
Flash Point(F)
does not flash
Flash Point(C)
does not flash
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