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10108057001

Roche

Pepsin

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(s):

pepsin

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About This Item

Enzyme Commission number:
3.4.23.1 (BRENDA, IUBMB)
UNSPSC Code:
12352204

biological source

pig gastric mucosa

Quality Level

100

form

lyophilized (salt-free)

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.)

packaging

pkg of 1 g

manufacturer/tradename

Roche

optimum pH

1.8-2.2

shipped in

wet ice

storage temp.

2-8°C

Related Categories

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.

Specificity

Aspartic endopeptidase with relatively broad specificity. Preferential cleavage: hydrophobic, preferably aromatic, residues in P1 and P1′ positions.

Application

Pepsin has been used for the digestion of liver tissue obtained from rat.

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.

Other Notes

For life science research only. Not for use in diagnostic procedures.

pictograms

Exclamation markHealth hazard
GHS07,GHS08

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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