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Human IL-18BP Fc Recombinant Protein, PeproTech®
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Product Details
200-18BP-500UG
Applications
Tested Dilution
Publications
Product Specifications
Species
Human
Published species
Human
Expression System
CHO cells
Amino acid sequence
TPVSQTTTAA TASVRSTKDP CPSQPPVFPA AKQCPALEVT WPEVEVPLNG TLSLSCVACS RFPNFSILYW LGNGSFIEHL PGRLWEGSTS RERGSTGTQL CKALVLEQLT PALHSTNFSC VLVDPEQVVQ RHVVLAQLWA GLRATLPPTQ EALPSSHSSP QQQGGPKSCD KTHTCPPCPA PELLGGPSVF LFPPKPKDTL MISRTPEVTC VVVDVSHEDP EVKFNWYVDG VEVHNAKTKP REEQYNSTYR VVSVLTVLHQ DWLNGKEYKC KVSNKALPAP IEKTISKAKG QPREPQVYTL PPSRDELTKN QVSLTCLVKG FYPSDIAVEW ESNGQPENNY KTTPPVLDSD GSFFLYSKLT VDKSRWQQGN VFSCSVMHEA LHNHYTQKSL SLSPGK
Tag
Fc-tag
Molecular weight
87.2 kDa
Class
Recombinant
Type
Protein
Purity
≥ 95% by SDS-PAGE gel and HPLC analyses.
Endotoxin concentration
<1 EU/µg
Activity
Determined by its ability to neutralize IL-18 induced IFN-gamma production in KG-1 cells.
Conjugate
Form
Lyophilized
Amount
500 µg
Purification
purified
Contains
no preservative
Storage conditions
-20°C
Shipping conditions
Ambient
Product Specific Information
PeproTech's CHO cell-derived Recombinant Human IL-18BP Fc is a glycosylated, disulfide-linked homodimer of 792 amino-acid-residues whose monomer consists of a 163-amino-acid portion of secreted IL-18BP fused to the 231-amino-acid length Fc portion of human IgG by two glycine residues. The calculated molecular weight of monomeric CHO cell-derived Recombinant Human IL-18BP Fc is 43.6 kDa; however, due to glycosylation, it migrates at an apparent molecular weight of approximately 60-65 kDa by SDS-PAGE analysis under reducing conditions.
This product is shipped at ambient temperature. For storage, handling and reconstitution information, please see the lot-specific Certificate of Analysis
Target Information
Interleukin-18 binding protein (IL-18BP) is a constitutively secreted glycoprotein that acts as a natural antagonist for interleukin-18 (IL-18) by preventing interaction between IL-18 and its receptors. Through this binding, IL-18BP neutralizes the proinflammatory role of IL-18 in cell-mediated immune responses, resulting in reduced IFN-gamma production by T helper type I cells and inhibition of allospecific cytotoxic T lymphocyte (CTL) activity through augmented natural killer (NK) cell cytotoxicity. As an inhibitor of IL-18 and an essential component of skin homeostasis, IL-18BP has been linked to a variety of diseases, including eczema, asthma, and the autoimmune condition, Crohn's disease. The upregulation of IL-18BP by keratinocytes expressing the human papillomavirus (HPV) E7 oncoprotein has been shown to decrease IL-18-induced IFN-gamma production and IL-18-mediated T cell activation. Elevated levels of IL-18 and IL-18BP, as well as proinflammatory cytokines IFN-gamma, TNF-alpha, IL-1beta and IL-8, have been linked to chronic inflammation and observed in macrophages (including Kupffer cells) isolated from lesions and intestinal tissues of Crohn's disease patients. As a member of the immunoglobulin-like class of receptors, IL-18BP contains a single immunoglobulin (Ig) domain; although two (b and d) of the four identified human isoforms (a-d) contain incomplete domains that greatly reduce their binding affinity.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Bioinformatics
Protein Aliases: IL-18BP; IL-18BPa; IL-18BPb; IL-18BPc; Interleukin-18-binding protein; MC51L-53L-54L homolog gene product; Tadekinig-alfa; unnamed protein product
Gene Aliases: FVH; IL18BP; IL18BPa
UniProt ID: (Human) O95998
Entrez Gene ID: (Human) 10068
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