Pepsin
ROCHE/10108057001 - lyophilized (salt-free), ~2500 units/mg protein (At 37 °C with hemoglobin as the substrate. One unit is the enzyme activity which liberates the amount of Tyr producing an increase in the absorbance of 0.001/minute at 280 nm.)
Synonym: pepsin
Product Type: Chemical
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| biological source | pig gastric mucosa |
| form | lyophilized (salt-free) |
| manufacturer/tradename | Roche |
| optimum pH | 1.8-2.2 |
| packaging | pkg of 1 g |
| Quality Level | 100  |
| shipped in | wet ice |
| specific activity | ~2500 units/mg protein (At 37 °C with hemoglobin as the substrate. One unit is the enzyme activity which liberates the amount of Tyr producing an increase in the absorbance of 0.001/minute at 280 nm.) |
| storage temp. | 2-8°C |
| Application: | Pepsin has been used for the digestion of liver tissue obtained from rat. |
| General description: | Pepsin is an aspartic endoproteinase isolated from pig gastric mucosa. It is mainly used for the unspecific hydrolysis of proteins and peptides in acidic media. It also provides a limited hydrolysis of native immunoglobulins to yield biologically active fragments. |
| Other Notes: | For life science research only. Not for use in diagnostic procedures. |
| Preparation Note: | Working concentration: 0.05 to 0.5 mg/ml Storage conditions (working solution): A pepsin solution is stable at 2 to 8 °C, at least for one week, at neutral pH and under germfree conditions. Frozen aliquots of the enzyme solution are expected to be more stable. A stock solution in 10 mM HCl (5-10 mg/ml) should be stable for at least one week at 2 to 8 °C, too. Storage light protected, tightly closed. A short (2 minutes) incubation at 40 °C has negligible effect on the activity of lyophilized pepsin or pepsin in solution. |
| Specificity: | Aspartic endopeptidase with relatively broad specificity. Preferential cleavage: hydrophobic, preferably aromatic, residues in P1 and P1′ positions. |
| Symbol |   GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H315 - H319 - H334 - H335 |
| Precautionary statements | P261 - P264 - P280 - P284 - P304 + P340 + P312 - P342 + P311 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| activity | specific activity: ~2500 units/mg protein (At 37 °C with hemoglobin as the substrate. One unit is the enzyme activity which liberates the amount of Tyr producing an increase in the absorbance of 0.001/minute at 280 nm.) |
| Storage Temp. | 2-8°C |
| Enzyme Commission (EC) Number | 3.4.23.1 ( BRENDA  | IUBMB ) |
| UNSPSC | 12352204 |