Elastase Product Information

Source: Porcine Pancreas


Porcine pancreatic elastase has a molecular weight of 25.9 kDa, and a pH optimum of 8.5.  While elastase will hydrolyze a wide variety of protein substrates, it is unique among proteases in its ability to hydrolyze native elastin, a substrate not attacked by trypsin, chymotrypsin or pepsin. Soybean trypsin inhibitor and kallikrein inhibitor suppress proteolytic but not elastolytic activity.  Elastase is assayed using a method adapted from that of Feinstein et al., Biochem. Biophys. Res. Comm., 50, 1020 (1973) and using the more soluble substrate of Bieth et al., Biochem. Med., 11, 350 (1974).

Stability/Storage: Elastase is unstable at pH ≤ 3.5. When stored as a dry powder the enzyme is stable for 6-12 months at 2-8°C.  Elastase product codes: ES and ESL have poor solubility at neutral pH and at concentrations greater than 0.25%.  It is helpful to make primary solutions in KCl or alkaline buffers before diluting into the reaction mixtures or media, compensating for ionic strength or pH changes.  Stable at pH 4.0-10.4.

Technical Notes: 1 SucAla3NA unit is approximately equivalent to 6 elastin digestion units. Aqueous liquid suspensions should be aseptically handled to avoid bacterial contamination. Due to the viscous nature of the aqueous suspension (Code: ES) the vial should be rinsed to recover contents.

Unit Definition: One Unit cleaves one micromole of N-succinyl-L-alanyl-L-alanyl-L-alanine-p-nitroanilide per minute at 25°C, pH 8.0.

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DescriptionActivityCodeSizeCat. No.Price
Elastase, Purified
Chromatographically purified. A lyophilized powder.
Store at 2-8C.
≥8 units per mg protein ESFF 5 mg LS006363 $74.00 Buy Now
20 mg LS006365 $217.00 Buy Now
Bulk LS006367 Inquire
Elastase, Lyophilized
Two times crystallized, (Code: ESL), supplied as a dialyzed, lyophilized powder. The enzyme should be 0.22 micron filtered after reconstitution and prior to use. Suitable for the isolation of Type II lung cells.
Store at 2-8C.
≥3 units per mg protein ESL 25 mg LS002290 $50.00 Buy Now
100 mg LS002292 $142.00 Buy Now
1 gm LS002294 $1020.00 Buy Now
Bulk LS002298 Inquire
Elastase, Suspension
Two times crystallized. Supplied as an aqueous suspension. This preparation must be diluted to dissolve the enzyme. The diluted enzyme should be 0.22 micron filtered before use. Suitable for the isolation of Type II lung cells.
Store at 2-8C. DO NOT FREEZE.
≥3 units per mg protein ES 25 mg LS002274 $47.00 Buy Now
100 mg LS002279 $128.00 Buy Now
1 gm LS002280 $968.00 Buy Now
Bulk LS002276 Inquire

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