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Recombinant Cyno/Rhesus Lysyl Oxidase Homolog 2 Protein, CF

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2 μg/lane of Recombinant Cynomolgus Monkey/Rhesus Macaque Lysyl Oxidase Homolog 2/LOXL2 His-tag Protein (Catalog # 11431-AO) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized ...read more

Product Details

Summary
Reactivity Pm-Cm, RMSpecies Glossary
Applications Enzyme Activity
Format
Carrier-Free

Order Details

Recombinant Cyno/Rhesus Lysyl Oxidase Homolog 2 Protein, CF Summary

Additional Information
His-tag
Details of Functionality
Measured by its ability to produce hydrogen peroxide during the oxidation of benzylamine. The specific activity is >6 pmol/min/μg, as measured under the described conditions.
Source
Chinese Hamster Ovary cell line, CHO-derived Lysyl Oxidase Homolog 2/LOXL2 protein
Gln26-Gln774, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Gln26 inferred from enzymatic pyroglutamate treatment revealing Tyr27
Protein/Peptide Type
Recombinant Enzymes
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Enzyme Activity2
Theoretical MW
85 kD.
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
92-102 kDa, under reducing conditions

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
>95%, 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 Cyno/Rhesus Lysyl Oxidase Homolog 2 (rcynoLOXL2) (Catalog # 11431-AO)
  • Coupling Enzyme: Horseradish Peroxidase (HRP), 250 units/mL stock in 0.1 M Sodium Phosphate, pH 8.0
  • Substrate Component 1: Benzylamine, 100 mM stock in deionized water
  • Substrate Component 2: Amplex Ultra Red (AUR), 10 mM stock in DMSO 
  • 96-Well Black Plate 
  • Plate Reader with Fluorescence Read Capability
  1. Dilute rcynoLOXL2 to 20 µg/mL in Assay Buffer. 
  2. Dilute Benzylamine to 8 mM in Assay Buffer. 
  3. Combine equal volume of 20 µg/mL rcynoLOXL2 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 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 cut off must be set 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 in Assay Buffer. Use this oxidized AUR curve to determine the conversion factor.
Per Well:
  • rcynoLOXL2: 0.5 µg
  • Benzylamine: 2 mM
  • HRP: 1 unit/mL
  • Amplex UltraRed: 20 µM

















Notes

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

Alternate Names for Recombinant Cyno/Rhesus 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 a five-member lysyl oxidase-like (LOXL) gene family of secreted copper-binding amine oxidases that oxidize primary amine substrates such as collagen and elastin to aldehydes within the extracellular matrix (1, 2). LOXL2 is a secreted protein expressed in many tissues, with elevated levels in reproductive tissues such as placenta, uterus, and prostate (3). The N-terminal region of LOXL2 contains four scavenger receptor cysteine-rich (SRCR) domains responsible for protein-protein interactions while the C-terminal region contains the catalytic domain (1, 2). The catalytic domain contains conserved residues required for copper binding, a lysyl tyrosylquinone (LTQ) element required for co-factor formation essential for activity, and a cytokine receptor-like (CRL) domain (2,4). Modulation of the tissue microenvironment implicates a role for LOXL2 in many pathological conditions including fibrosis, atherosclerosis, and tumor development (5). LOXL2 has been shown to promote cell migration and tumor cell invasiveness (6,7) and to enhance tumor progression in various types of cancer including colon, gastric, hepatic, renal cancers (8,9). Dysregulation of LOXL2 has been linked to fibrosis and inflammation (10). Given its role in modulation of the tissue microenvironment involved in pathological conditions, development of inhibitors to LOXL2 is of interest for therapeutic application (2, 9). 
  1. Csiszar, H. (2001) Prog. Nucleic Acid Res. Mol. Biol. 70:1.
  2. Radic, J. et. al. (2023) Int. J. Mol. Sci. 24:11745.
  3. Jourdan-Le Saux C. et al. (1999) J. Biol. Chem. 274:12939.
  4. Maki, J.M. and K.I. Kivirikko (2001) Biochem. J. 355:381.
  5. Wang, T.H. et. al. (2016) Int. J. Mol. Sci. 18:62.
  6. Akiri, G. et al. (2003) Cancer Res. 63:1657.
  7. Hollosi, P. et al. (2009) Int. J. Cancer. 125:318.
  8. Peinado, H. et al. (2008) Cancer Res. 68:4541.
  9. Liburkin-Dan, R. et. al. (2022) Int. J. Mol. Sci. 23:6249.
  10. Poe, A. et. al. (2023) Am. J. Physiol. Cell Physiol. 325:C694.

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