Recombinant Mouse Lysyl Oxidase Homolog 2 Protein, CF

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1 μg/lane of Recombinant Mouse Lysyl Oxidase Homolog 2 (Catalog # 9259-AO) and 1 μg/lane of competitor Lysyl Oxidase Homolog 2 was resolved with 4-20% SDS-PAGE under reducing (R) and non-reducing (NR) conditions and ...read more

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Summary
Reactivity MuSpecies Glossary
Applications Enzyme Activity
Format
Carrier-Free

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Recombinant Mouse Lysyl Oxidase Homolog 2 Protein, CF Summary

Details of Functionality
Measured by its ability to produce hydrogen peroxide during the oxidation of benzylamine. The specific activity is >4.5 pmol/min/μg, as measured under the described conditions.
Source
Mouse myeloma cell line, NS0-derived mouse Lysyl Oxidase Homolog 2/LOXL2 protein
Gln26-Gln776
with a C-terminal 6-His tag
Accession #
N-terminal Sequence
No results obtained. Gln26 inferred from enzymatic pyroglutamate treatment revealing Tyr27
Protein/Peptide Type
Recombinant Enzymes
Purity
>80%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<1.0 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
85 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
93-111 kDa, reducing conditions
Publications
Read Publication using
9259-AO in the following applications:

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, -20 to -70 °C under sterile conditions after opening.
Buffer
Supplied as a 0.2 μm filtered solution in MES and NaCl.
Purity
>80%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Assay Procedure
  • Assay Buffer: 50 mM Sodium Borate, 250 mM Urea, 10 mM CaCl2, pH 8.0
  • Recombinant Mouse Oxidase Homolog 2/LOXL2 (rmLOXL2) (Catalog # 9259-AO)
  • Coupling Enzyme:  Horseradish Peroxidase (HRP), 250-330 U/mg (Sigma, Catalog # P8375), 250 units/mL stock in 0.1 M Sodium Phosphate, pH 8.0
  • Substrate Component 1: Benzylamine (Sigma, Catalog # B5136), 100 mM stock in deionized water
  • Substrate Component 2: Amplex Ultra Red (AUR) (Molecular Probes, Catalog # A36006), 10 mM stock in DMSO
  • F16 Black Maxisorp Plate (Nunc, Catalog # 475515)
  • Fluorescent Plate Reader (Model: SpectraMax Gemini EM by Molecular Devices) or equivalent
  1. Dilute rmLOXL2 to 40 ng/µL in Assay Buffer.
  2. Dilute Benzylamine to 8 mM in Assay Buffer.
  3. Combine equal volumes of 40 ng/µL rmLOXL2 and 8 mM Benzylamine. Also create a Substrate Blank by combining equal volumes of Assay Buffer and 8 mM Benzylamine.
  4. Incubate the reactions for 30 minutes at 37 °C.
  5. Prepare Substrate Mixture containing 2 units/mL HRP and 40 µM AUR in Assay Buffer.
  6. Load 50 µL of the incubated reactions into the wells of a black well plate, and add 50 µL of Substrate Mixture to each well.
  7. Read at excitation and emission wavelengths of 544 nm and 590 nm (top read), respectively in endpoint mode. Note:  A cutoff must be set manually at a wavelength of 570 nm. 
  8. Calculate specific activity:

     Specific Activity (pmol/min/µg) =

Adjusted Fluorescence* (RFU) x Conversion Factor** (pmol/RFU)
Incubation time (min) x amount of enzyme (µg)

     *Adjusted for Substrate Blank
    **Derived using a fluorescent standard prepared by incubating 20 µM AUR, 1 unit/mL HRP, 2 mM Benzylamine, and a curve of Hydrogen Peroxide (Sigma, Catalog # H1009) in Assay Buffer. Use this oxidized AUR curve to determine the conversion factor.

Per Well:
  • rmLOXL2: 1 µg
  • Benzylamine: 2 mM
  • HRP: 1 unit/mL
  • AUR: 20 µM

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Mouse Lysyl Oxidase Homolog 2 Protein, CF

  • EC 1.4.3
  • EC 1.4.3.-
  • LOL2
  • LOR2
  • LOXL2
  • Lysyl Oxidase Homolog 2
  • lysyl oxidase related 2
  • lysyl oxidase-like 2
  • Lysyl oxidase-like protein 2
  • Lysyl oxidase-related protein 2
  • Lysyl oxidase-related protein WS9-14
  • WS9-14

Background

Lysyl Oxidase Homolog 2 (lysyl oxidase-like protein 2, LOXL2) is a member of lysyl oxidase-like (LOXL) gene family which includes LOXL1 through LOXL4. These enzymes are secreted copper-binding amine oxidases that oxidize primary amine substrates to aldehydes (1). The N-terminal region of LOXL2 contains four scavenger receptor cysteine-rich (SRCR) domains, and the C-terminal region is a catalytic domain similar to other lysyl oxidases (1). The catalytic domain contains conserved residues required for copper binding and formation of a lysyl tyrosylquinone co-factor (2). It has been shown that LOXL2 promotes cell migration and tumor cell invasiveness (3, 4). Elevated expression of LOXL2 is also associated with cancer progression in various tumors and carcinoma cell lines, which makes it a potential marker for prognosis of cancer (5). LOXL2 is expressed in many tissues, with elevated levels in reproductive tissues such as placenta, uterus, and prostate (6). Activity is routinely determined using benzylamine as a substrate, although significantly higher activity is detected when activity is quantified using lysine as the substrate.
  1. Csiszar, H. (2001) Prog. Nucleic Acid Res. Mol. Biol. 70:1.
  2. Maki, J.M. and K.I. Kivirikko (2001) Biochem J. 355:381.
  3. Akiri, G. et al. (2003) Cancer Res. 63:1657.
  4. Hollosi, P. et al. (2009) Int. J. Cancer. 125:318.
  5. Peinado, H. et al. (2008) Cancer Res. 68:4541.
  6. Jourdan-Le Saux C. et al. (1999) J. Biol. Chem. 274:12939.

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9259-AO
Species: Mu
Applications: Enzyme Activity

Publications for Lysyl Oxidase Homolog 2/LOXL2 (9259-AO)(1)

We have publications tested in 1 confirmed species: Mouse.

We have publications tested in 1 application: Bioassay.


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