Products

Enzymes for Research, Diagnostic and Industrial Use

Immobilized Pepsin on F7m

Cat No.
NATE-1766
Description
Pepsin is an endopeptidase. It hydrolyses proteins and peptides favorably adjacent to aromatic and dicarboxylic L-amino acid residues, preferentially phenylalanine and leucine but not next to valine, alanine, and glycine.
Pepsin is not stable above pH 6. 0.
F7m: 1. 0 mg pepsin (16 m Anson) immobilized on polyvinyl per CR-column (1 m Anson unit is equivalent to 1 µmole of Foline-positive amino acids calculated as tyrosine released from denaturated hemoglobin per minute at 37. 5°C at pH 2; this mAnson unit is equivalent
to ca. 180 D-A280 units).
Nr. 40 Storage buffer : 50 mM glycine, 10% (v/v) glycerol, pH 4. 0
Nr. 33 Reaction buffer: 20 mM Na acetate, pH 4. 7.
Nr. 34 Washing buffer: 20 mM Na acetate, 1. 0 M NaCl, pH 4. 7
Source
Porcine mucosa
Enzyme Commission Number
EC 3. 4. 23. 1
Storage
4 °C
Synonyms
EC 3. 4. 23. 1; pepsin; lactated pepsin; pepsin fortior; fundus-pepsin; elixir lactate of pepsin; P I; lactated pepsin elixir; P II; pepsin R; pepsin D; Pepsin A
Protocol
1. Dilute delivered buffers (at least 2 ml each) with sterile doubly distilled water.
For 1 application you need
0.25 ml 10x reaction buffer and 2. 25 ml doubly distilled water
0.4 ml 5x washing buffer and 1. 6 ml doubly distilled water
0.2 ml 10x storage buffer and 0.2 ml 100% Glycerol and 1. 6 ml doubly distilled water
The substrate should be in reaction buffer
2. Equilibrate the CR-column with 2 ml reaction buffer.
Fill 2 ml reaction buffer into a syringe, 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 (< 80 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 80 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 (< 80 µl): Elute the product with 500 µl reaction buffer.
Larger volumes: Let the substrate run through the column and elute the residual product solution with 500 µl reaction buffer.
It does not harm the columns if they run dry.
5. Wash the column with 2 ml washing buffer.
6. Equilibrate the column with 2 ml storage buffer.
Store the column at 4°C.
Never freeze a CR-column!
Download Datasheet:



Inquiry
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