Recombinant Human ISG15 AMC Protein, CF

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications Enzyme Activity
Format
Carrier-Free

Order Details

Recombinant Human ISG15 AMC Protein, CF Summary

Details of Functionality
Recombinant Human ISG15 AMC is a fluorogenic substrate for some ISG15-specific isopeptidases. Release of AMC fluorescence can be monitored with an excitation wavelength of 380 nm and an emission wavelength of 460 nm. Reaction conditions will need to be optimized for each specific application. We recommend an initial Recombinant Human ISG15 AMC concentration of 0.1-1 μM.
Source
E. coli-derived human ISG15/UCRP protein
Contains underivatized and C-terminal AMC derivatized protein, quantity is by derivatized content
Accession #
Protein/Peptide Type
Recombinant Proteins
Gene
ISG15

Applications/Dilutions

Theoretical MW
19 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.
Publications
Read Publications using
UL-553 in the following applications:

Packaging, Storage & Formulations

Storage
Protect from light. Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -70 °C as supplied.
  • 3 months, -70 °C under sterile conditions after opening.
Buffer

X mg/ml (X µM) in 50 mM HEPES pH 7.5, 100 mM NaCl, 20% Glycerol (v/v), 2mM DTT

Notes

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

Alternate Names for Recombinant Human ISG15 AMC Protein, CF

  • G1P2
  • G1P2interferon-induced 17-kDa/15-kDa protein
  • IFI15
  • IFI15hUCRP
  • interferon, alpha-inducible protein (clone IFI-15K)
  • Interferon-induced 15 kDa protein
  • Interferon-induced 17 kDa protein
  • interferon-stimulated protein, 15 kDa
  • IP17
  • ISG15 ubiquitin-like modifier
  • ISG15
  • Ubiquitin cross-reactive protein
  • ubiquitin-like protein ISG15
  • UCRP
  • UCRPIP17

Background

Interferon-stimulated Gene 15 (ISG15), also known as Ubiquitin Cross-reacting Protein (UCRP), is a Ubiquitin-like protein that is covalently coupled to target proteins in a process termed ISGylation. It is a 165 amino acid (aa) polypeptide with a predicted molecular weight of 18 kDa. ISG15/UCRP exhibits 66% aa sequence identity with its mouse ortholog. Structurally, ISG15/UCRP consists of two tandem Ubiquitin-like domains that share a similar 3-dimensional structure with Ubiquitin and other Ubiquitin-like modifiers including NEDD8 and SUMO1. Modification of targets by ISG15/UCRP occurs in a stepwise enzymatic process similar to that of Ubiquitin. Enzymes regulating ISGylation include the activating (E1) enzyme UBE1L, the conjugating (E2) enzyme UbcH8, and ligases (E3) such as EFP/TRIM25 and HERC5 (1-4). Removal of ISG15/UCRP is catalyzed by the deconjugating enzyme UBP43/USP18 (5). Functionally, ISG15/UCRP has putative roles in the immune response and tumorigenesis. This is reflected by intracellular ISG15/UCRP targets that include Cyclin D1, tumor suppressor p63, IRF3, and a range of viral proteins (6-8). It is induced by type 1 interferons and microbial infection, and knockout mice exhibit an increased sensitivity to infection by some viruses (6). ISG15/UCRP can also be secreted by cells of the immune system and may act in a cytokine-like manner (9). For instance, it is produced by human granulocytes in response to mycobacterium exposure, and natural killer cells and T cells respond to extracellular ISG15/UCRP with IFN-gamma production (10). Further supporting a role in immune function, ISG15/UCRP mutations are associated with MSMD, an inherited disorder characterized by increased susceptibility to mycobacterial infection (10). 

 

This fluorogenic substrate for ISG15 hydrolases is based on the carboxy-terminus derivatization of ISG15 with 7-amido-4-methylcoumarin (AMC). ISG15 AMC is useful for studying enzymes (such as UBP43 and Papain-Like Protease from SARS coronavirus) when detection sensitivity or continuous monitoring of activity is essential.

  1. Yuan, W. & R.M. Krug (2001) EMBO J. 20:362.
  2. Zhao, C. et al. (2004) Proc. Natl. Acad. Sci. USA 101:7578.
  3. Zou, W. & D.E. Zhang (2006) J. Biol. Chem. 281:3989.
  4. Wong, J.J. et al. (2006) Proc. Natl. Acad. Sci. USA 103:10735.
  5. Malakhov, M.P. et al. (2002) J. Biol. Chem. 277:9976.
  6. Zhang, D. & D.-E. Zhang (2011) J. Interferon Cytokine Res. 31:119.
  7. Jeon, Y.J. et al. (2012) J. Clin. Invest. 122:2622.
  8. Harty, R.N. et al. (2009) J. Innate. Immun. 1:397.
  9. Owashi, M. et al. (2003) Biochem. Biophys. Res. Commun. 309:533.
  10. Bogunovic, D. et al. (2012) Science 337:1684.

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UL-553
Species: Hu
Applications: Enzyme Activity

Publications for ISG15/UCRP (UL-553)(9)

We have publications tested in 1 confirmed species: N/A.

We have publications tested in 2 applications: Bioassay, Enzyme Assay.


Filter By Application
Bioassay
(6)
Enzyme Assay
(2)
All Applications
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N/A
(4)
All Species
Showing Publications 1 - 9 of 9.
Publications using UL-553 Applications Species
P Paudel, Q Zhang, C Leung, HC Greenberg, Y Guo, YH Chern, A Dong, Y Li, M Vedadi, Z Zhuang, Y Tong Crystal structure and activity-based labeling reveal the mechanisms for linkage-specific substrate recognition by deubiquitinase USP9X Proc. Natl. Acad. Sci. U.S.A., 2019;0(0):. 2019 [PMID: 30914461] (Bioassay) Bioassay
T Hermanns, C Pichlo, I Woiwode, K Klopffleis, KF Witting, H Ovaa, U Baumann, K Hofmann A family of unconventional deubiquitinases with modular chain specificity determinants Nat Commun, 2018;9(1):799. 2018 [PMID: 29476094] (Bioassay) Bioassay
CM Daczkowski, JV Dzimianski, JR Clasman, O Goodwin, AD Mesecar, SD Pegan Structural insights into the interaction of coronavirus papain-like proteases and interferon-stimulated gene product 15 from different species J. Mol. Biol., 2017;0(0):. 2017 [PMID: 28438633] (Bioassay) Bioassay
CM Daczkowski, JV Dzimianski, JR Clasman, O Goodwin, AD Mesecar, SD Pegan Structural insights into the interaction of coronavirus papain-like proteases and interferon-stimulated gene product 15 from different species J. Mol. Biol., 2017;0(0):. 2017 [PMID: 28438633] (Bioassay) Bioassay
JF Beckmann, JA Ronau, M Hochstrass A Wolbachia deubiquitylating enzyme induces cytoplasmic incompatibility Nat Microbiol, 2017;2(0):17007. 2017 [PMID: 28248294] (Bioassay, N/A) Bioassay N/A
JR Clasman, YM Báez-Santo, RC Mettelman, A O'Brien, SC Baker, AD Mesecar X-ray Structure and Enzymatic Activity Profile of a Core Papain-like Protease of MERS Coronavirus with utility for structure-based drug design Sci Rep, 2017;7(0):40292. 2017 [PMID: 28079137] (Enzyme Assay, N/A) Enzyme Assay N/A
Chen Y, Savinov S, Mielech A, Cao T, Baker S, Mesecar A X-ray Structural and Functional Studies of the Three Tandemly Linked Domains of Non-structural Protein 3 (nsp3) from Murine Hepatitis Virus Reveal Conserved Functions. J Biol Chem, 2015;290(42):25293-306. 2015 [PMID: 26296883] (Enzyme Assay, N/A) Enzyme Assay N/A
Deaton M, Spear A, Faaberg K, Pegan S The vOTU domain of highly-pathogenic porcine reproductive and respiratory syndrome virus displays a differential substrate preference. Virology, 2014;454(0):247-53. 2014 [PMID: 24725951]
Basters A, Ketscher L, Deuerling E, Arkona C, Rademann J, Knobeloch K, Fritz G High yield expression of catalytically active USP18 (UBP43) using a Trigger Factor fusion system. BMC Biotechnol, 2012;12(0):56. 2012 [PMID: 22916876] (Bioassay, N/A) Bioassay N/A

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Bioinformatics

Gene Symbol ISG15
Uniprot