A6362
Alpha-lytic protease
Synonym(s):
Alpha-lytic endopeptidase, alphaLP
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About This Item
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biological source
bacterial
Quality Level
form
liquid
specific activity
≥0.0005 U/mg
mol wt
19,860 Da
optimum pH
5.0(storage)
7.5(activity)
pI
9.69
shipped in
dry ice
storage temp.
−70°C
Related Categories
General description
Alpha-lytic protease (aLP) is an alternative specificity protease for proteomics applications. This protease cleaves after T, A, S, and V residues. It generates peptides of similar average length as trypsin.
aLP was first isolated from the myxobacterium Lysobacter enzymogenes. The pro-form of aLP is 397 amino acids long. In its mature form, aLP is 198 amino acids long. Its tertiary structural core resembles those of pancreatic serine proteases.
Crystal structure studies of aLP have been reported. Several studies are available on the active site and catalytic mechanism of aLP. The role of the pro-region in the activation, secretion and folding of aLP has been studied.
The activity of aLP in the presence of various solution components is as follows:
aLP was first isolated from the myxobacterium Lysobacter enzymogenes. The pro-form of aLP is 397 amino acids long. In its mature form, aLP is 198 amino acids long. Its tertiary structural core resembles those of pancreatic serine proteases.
Crystal structure studies of aLP have been reported. Several studies are available on the active site and catalytic mechanism of aLP. The role of the pro-region in the activation, secretion and folding of aLP has been studied.
The activity of aLP in the presence of various solution components is as follows:
- 0.1% sodium deoxycholate: ~1.75-fold enhanced activity
- 1.0% sodium deoxycholate: ~60% activity
- 0.1% SDS: ~50% activity
- 1.0% SDS: ~40% activity
- 1 M guanidine HCl: ~20% activity
- 4 M guanidine HCl: ~1% activity (essentially inactivated)
Unit Definition
One unit will produce one mmole of p-nitroaniline per minute from N-succinyl-Ala-Ala-Ala-PNA at 25 °C at pH 7.5
Physical form
Supplied as a solution in 10 mM sodium acetate buffer, pH 5.0.
Storage Class Code
12 - Non Combustible Liquids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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