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A specific substrate for pancreatic elastase (km = 100 µM; kcat/ Km = 35,000 M-1 s-1 for rat pancreatic elastase, Km = 30 µM; kcat/Km = 35,000 M-1 s-1 for porcine). Cleavage of substrate can be monitored at ~405 nm.
Catalogue Number
324699
Brand Family
Calbiochem®
References
References
Largman, L. 1983. Biochemistry22, 3763. Del Mar, E.G., et al. 1980. Biochemistry19, 468.
Product Information
ATP Competitive
N
Form
White to off-white lyopilized solid
Formulation
45 mg D-mannitol and 5 mg substrate. Sold on the basis of substrate content.
Elastase Substrate IV, Colorimetric - Calbiochem 分析证书
标题
批号
324699
参考
参考信息概述
Largman, L. 1983. Biochemistry22, 3763. Del Mar, E.G., et al. 1980. Biochemistry19, 468.
数据表
Note that this data sheet is not lot-specific and is representative of the current specifications for this product. Please consult the vial label and the certificate of analysis for information on specific lots. Also note that shipping conditions may differ from storage conditions.
Revision
19-June-2008 RFH
Description
A specific substrate for pancreatic elastase (Km = 100 µM; Kcat/Km = 35,000 s-1 M-1 for rat pancreatic elastase; Km = 30 µM; Kcat/Km = 351,000 s-1 M-1 for porcine pancreatic elastase). Cleavage of substrate can be monitored at ~405 nm.
Suggested protocol: see Largman, C. (1983)
Form
White to off-white lyopilized solid
Formulation
45 mg D-mannitol and 5 mg substrate. Sold on the basis of substrate content.
Chemical formula
C₂₅H₃₄N₆O₉
Peptide Sequence
Suc-Ala-Ala-Pro-Abu-pNA (Abu = L-α-Aminobutyric Acid)
Purity
≥95% by HPLC
Solubility
Ethanol (1 mg/ml) or H₂O
Storage
Protect from moisture
Avoid freeze/thaw
-20°C
Do Not Freeze
Ok to freeze
Special Instructions
Following reconstitution, store in the refrigerator (4°C). Stock solutions are stable for up to 3 months at 4°C.
Toxicity
Standard Handling
References
Largman, L. 1983. Biochemistry22, 3763. Del Mar, E.G., et al. 1980. Biochemistry19, 468.