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Enzymes for Research, Diagnostic and Industrial Use

Immobilized TPCK-Trypsin on G3m

Cat No.
NATE-1772
Description
Trypsin hydrolyzes proteins, peptides, amides and esters specifically at the carboxyl groups of the basic amino acids L-arginine or L-lysine.
G3m: 25 µg trypsin per CR-column, immobilized on dextran.
260 ST-units immobilized per CR-column.
This CR-column cuts at least 50 µg tubulin per application.
Nr. 15 Storage buffer: 50 mM Tris/HCl at pH 8. 0
Nr. 67 Reaction buffer: 50 mM phosphate at pH 8. 0 (Sörensen)
Nr. 68 Washing buffer: 50 mM phosphate at pH 8. 0, 1 M NaCl
Source
Bovine pancreas
Enzyme Commission Number
EC 3. 4. 21. 4
Storage
4 °C
Synonyms
α-trypsin; β-trypsin; cocoonase; parenzyme; parenzymol; tryptar; trypure; pseudotrypsin; tryptase; tripcellim; sperm receptor hydrolase; Alpha-trypsin; Beta-trypsin; EC 3. 4. 21. 4; Trypsin
Protocol
1. Dilute delivered buffers (at least 2 ml each) with doubly distilled water.
For 1 application you need:
1 ml 10x reaction buffer and 9 ml doubly distilled water
2 ml 5x washing buffer and 8 ml doubly distilled water
1 ml 10x storage buffer and 9 ml doubly distilled water
The substrate should be in reaction buffer
2. Equilibrate the CR-column with 10 ml reaction buffer.
Load in a syringe 10 ml reaction buffer, let the reaction buffer run through the column by gravity to the upper filter. In case the buffer runs very slowly, apply pressure by a syringe.
3. Load substrate solution in reaction buffer.
Small volumes (< 70 µl): spin the CR-column 5 seconds in a benchtop centrifuge (2000 rpm are sufficient). Let the substrate solution enter the matrix material.
Larger volumes: Let the substrate solution run through the column.
Flow-rate: up to 70 µl/minute
Keep the substrate in the column for about 1 minute at room temperature. Higher turn-over is obtained when the substrate is applied to the column again or incubated for longer times.
4. Elute the product solution.
Small volumes (< 70 µl): centrifuge the product out of the column.
Larger volumes: Let the substrate run through the column and spin the residual solution out of the matrix
Notice: Molecules < 700 Dalton have to be eluted with 7 ml reaction buffer.
It does not harm the columns if they run dry.
5. Wash the column with 10 ml washing buffer.
6. Equilibrate the column with 10 ml storage buffer.
Store the column at 4°C.
Never freeze a CR-column!
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