A8200
Aminopeptidase from Aeromonas proteolytica
lyophilized powder, 50-150 units/mg protein
Synonym(s):
AAP, Aminopeptidase from Vibrio proteolyticus, bacterial leucyl aminopeptidase
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About This Item
CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54
grade
Proteomics Grade
Quality Level
form
lyophilized powder
specific activity
50-150 units/mg protein
mol wt
29.5 kDa
composition
Protein, ~40% biuret
solubility
H2O: soluble 0.9-1.1 mg/mL, clear, colorless
foreign activity
endopeptidase, essentially free
storage temp.
−20°C
Related Categories
General description
A zinc-containing enzyme.
Application
Aminopeptidases are a family of widely distributed proteases, which may be used to study many significant biological processes such as protein maturation, hormone production, and peptide digestion. The enzyme has been used to measure the kinetic rate constant for the binding of bestatin, a general protease inhibitor, to aminopeptidase.
Biochem/physiol Actions
Aminopeptidase from Aeromonas proteolytica is a metalloenzyme, which contains 2 atoms of Zn2+ in a single polypeptide with an approximate molecular weight of 29.5 kDa as determined by sedimentation. This enzyme has a high degree of stability, being stable even at temperatures of 70 °C for several hours. Partial inactivation occurs in 8 M urea. Maximum stability and activity are between pH 8.0-8.5. Aminopeptidase from Aeromonas proteolytica can function as an esterase.
Aminopeptidase from Aeromonas proteolytica is involved in protein maturation, hormone production and peptide digestion.
Catalyzes the release of an N-terminal amino acid, preferentially leucine, but not glutamic or aspartic acids.
Physical form
Lyophilized powder containing tricine buffer, pH 8.0, zinc chloride and stabilizer.
Preparation Note
Dissolves in water at 0.9-1.1 mg/mL concentration to form a clear, colorless solution.
Other Notes
One unit will hydrolyze 1.0 μmole of L-leucine p-nitroanilide to L-leucine and p-nitroaniline per min at pH 8.0 at 25 °C.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Regulatory Information
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James Kahn et al.
Biochemistry and molecular biology education : a bimonthly publication of the International Union of Biochemistry and Molecular Biology, 38(4), 238-241 (2011-05-14)
We have recently designed a biochemistry laboratory experiment for the purpose of providing students an advanced experience with enzyme kinetics and the kinetics of binding. Bestatin, a well-known and commercially available general protease inhibitor, is a slow-binding inhibitor of aminopeptidase
Carin C Stamper et al.
Biochemistry, 43(30), 9620-9628 (2004-07-28)
Binding of the competitive, slow-binding inhibitor bestatin ([(2S,3R)-3-amino-2-hydroxy-4-phenylbutanoy]-leucine) to the aminopeptidase from Aeromonas proteolytica (AAP) was examined by both spectroscopic and crystallographic methods. Electronic absorption spectra of the catalytically competent [Co_(AAP)], [CoCo(AAP)], and [ZnCo(AAP)] enzymes recorded in the presence of
Krzysztof P Bzymek et al.
Inorganic chemistry, 44(23), 8574-8580 (2005-11-08)
Previous kinetic characterization of the glutamate 151 (E151)-substituted forms of the leucine aminopeptidase from Aeromonas proteolytica (Vibrio proteolyticus; AAP) has provided critical evidence that this residue functions as the general acid/base. The close proximity of similar glutamate residues to the
L Ustynyuk et al.
Biochemistry, 38(35), 11433-11439 (1999-09-02)
Seven aliphatic and two aromatic alcohols were tested as reporters of the substrate selectivity of the aminopeptidase from Aeromonas proteolytica (AAP). This series of alcohols was chosen to systematically probe the effect of carbon chain length, steric bulk, and inhibitor
Gudrun Schürer et al.
Biochemistry, 43(18), 5414-5427 (2004-05-05)
The aminopeptidase of Aeromonas proteolytica (AAP) belongs to the group of metallo-hydrolases that require two divalent cations for full activity. Such binuclear metal centers are found in several aminopeptidases, raising the question whether a common mechanism, at least partly, is
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