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L6007

Sigma-Aldrich

Leucine Aminopeptidase, microsomal from porcine kidney

Type VI-S, lyophilized powder, ≥12 units/mg protein (biuret)

Synonym(s):

Aminopeptidase M, Aminopeptidase N, Cathepsin III, LAP, Leucinamide aminopeptidase, Leucinaminopeptidase

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About This Item

CAS Number:
9054-63-1
Enzyme Commission number:
3.4.11.2 (BRENDA, IUBMB)
EC Number:
232-942-5
MDL number:
MFCD00131501
UNSPSC Code:
12352204
NACRES:
NA.54

biological source

Porcine kidney

type

Type VI-S

form

lyophilized powder

specific activity

≥12 units/mg protein (biuret)

mol wt

320 kDa

composition

Protein, 30-70%

storage temp.

−20°C

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General description

Leucine Aminopeptidase (LAP) from porcine is a 320-kDa exopeptidase present in cytosol. It contains zinc in its structure and belongs to the M1 and M17 peptidase families. LAP display bi-lobed structure and has the catalytic domain at the C-terminus and a variable N-terminal domain.

Application

Leucine Aminopeptidase, microsomal from porcine kidney has been used in aminopeptidase N (APN) inhibitor screening assay in adenocarcinoma cell line ES-2 and in the inhibition kinetic studies with APN inhibitor.

Biochem/physiol Actions

Leucine Aminopeptidase (LAP) catalyzes protein hydrolysis at the leucine residue at N-terminal. An altered level of LAP is implicated in tumor proliferation and progression. LAP is a potential biomarker for ovarian epithelial cancer therapy. Porcine LAP hydrolyzes glycine and arginine substrates.

Unit Definition

One unit will hydrolyze 1.0 μmole of L-leucine-p-nitroanilide to L-leucine and p-nitroaniline per min at pH 7.2 at 37 °C. (At 25 °C, approx. 40% of the activity at 37 °C is obtained.) The activity obtained using L-leucine p-nitroanilide as substrate is 2-5 times that obtained with L-leucinamide as substrate.

Physical form

Contains primarily phosphate buffer salts, pH 7.0

Inhibitor

Product No.
Description
Pricing

pictograms

Health hazardExclamation mark
GHS08,GHS07

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 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The effect of different species Aminopeptidase N Structure on the activity screening of Aminopeptidase N Inhibitor
Wang X, et al.
Biological & Pharmaceutical Bulletin, 33(10), 1658-1665 (2010)
Leucine aminopeptidases: diversity in structure and function
Matsui M, et al.
Biological Chemistry, 387(12), 1535-1544 (2006)
Novel and highly sensitive fluorescent assay for leucine aminopeptidases
Huang H, et al.
Analytical biochemistry, 391(1), 11-16 (2009)
Activity screening and structure-activity relationship of the hit compounds targeting APN/CD13
Wang X, et al.
Fundamental & Clinical Pharmacology, 25(2), 217-228 (2011)
Refolding of hexameric porcine leucine aminopeptidase using a cationic detergent and dextrin-10 as artificial chaperones
Laslo AC, et al.
Journal of Biotechnology, 140(3-4), 162-168 (2009)
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