Recombinant Human Poliovirus Receptor (PVR) Protein (hFc), Active

Name: Recombinant Human Poliovirus Receptor (PVR) Protein (hFc), Active
Brand: Beta LifeScience
SKU: BLC-05782P
Availability: InStock

Greater than 95% as determined by SDS-PAGE.

Activity FACS assay shows that Human PVR can bind to HEK293F cell overexpressing human TIGIT.

Collections: Cluster of differentiation (cd) proteins, Co-inhibitory receptors, Featured cd protein molecules, Featured immune checkpoint protein molecules, Immune checkpoint proteins, Recombinant proteins, Recombinant proteins fall special offers - active proteins

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Product Overview

Description	Recombinant Human Poliovirus Receptor (PVR) Protein (hFc), Active is produced by our Mammalian cell expression system. This is a protein fragment.
Purity	Greater than 95% as determined by SDS-PAGE.
Endotoxin	Less than 1.0 EU/ug as determined by LAL method.
Activity	FACS assay shows that Human PVR can bind to HEK293F cell overexpressing human TIGIT.
Uniprotkb	P15151
Target Symbol	PVR
Synonyms	PVR; PVS; Poliovirus receptor; Nectin-like protein 5; NECL-5; CD antigen CD155
Species	Homo sapiens (Human)
Expression System	Mammalian cell
Tag	C-hFc
Target Protein Sequence	WPPPGTGDVVVQAPTQVPGFLGDSVTLPCYLQVPNMEVTHVSQLTWARHGESGSMAVFHQTQGPSYSESKRLEFVAARLGAELRNASLRMFGLRVEDEGNYTCLFVTFPQGSRSVDIWLRVLAKPQNTAEVQKVQLTGEPVPMARCVSTGGRPPAQITWHSDLGGMPNTSQVPGFLSGTVTVTSLWILVPSSQVDGKNVTCKVEHESFEKPQLLTVNLTVYYPPEVSISGYDNNWYLGQNEATLTCDARSNPEPTGYNWSTTMGPLPPFAVAQGAQLLIRPVDKPINTTLICNVTNALGARQAELTVQVKEGPPSEHSGMSRN
Expression Range	21-343aa(I340M)
Protein Length	Partial
Mol. Weight	64.0 kDa
Form	Lyophilized powder
Buffer	Lyophilized from a 0.2 μm filtered PBS, 6% Trehalose, pH 7.4
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Mediates NK cell adhesion and triggers NK cell effector functions. Binds two different NK cell receptors: CD96 and CD226. These interactions accumulates at the cell-cell contact site, leading to the formation of a mature immunological synapse between NK cell and target cell. This may trigger adhesion and secretion of lytic granules and IFN-gamma and activate cytotoxicity of activated NK cells. May also promote NK cell-target cell modular exchange, and PVR transfer to the NK cell. This transfer is more important in some tumor cells expressing a lot of PVR, and may trigger fratricide NK cell activation, providing tumors with a mechanism of immunoevasion. Plays a role in mediating tumor cell invasion and migration.; (Microbial infection) Acts as a receptor for poliovirus. May play a role in axonal transport of poliovirus, by targeting virion-PVR-containing endocytic vesicles to the microtubular network through interaction with DYNLT1. This interaction would drive the virus-containing vesicle to the axonal retrograde transport.; (Microbial infection) Acts as a receptor for Pseudorabies virus.; (Microbial infection) Is prevented to reach cell surface upon infection by Human cytomegalovirus /HHV-5, presumably to escape immune recognition of infected cell by NK cells.
Subcellular Location	[Isoform Alpha]: Cell membrane; Single-pass type I membrane protein.; [Isoform Delta]: Cell membrane; Single-pass type I membrane protein.; [Isoform Beta]: Secreted.; [Isoform Gamma]: Secreted.
Protein Families	Nectin family
Database References	HGNC: 9705 OMIM: 173850 KEGG: hsa:5817 STRING: 9606.ENSP00000402060 UniGene: Hs.171844

Gene Functions References

These findings highlight the importance of the TIGIT/CD226/PVR axis as an immune checkpoint barrier that could hinder future "cure" strategies requiring potent HIV-specific CD8(+) T cells PMID: 28084312
Study investigated the more detailed mechanism for this cis-interaction of Necl-5 with the PDGF receptor beta. Necl-5 contains three Ig-like domains and the PDGF receptor beta contains five Ig-like domains at their extracellular regions; showed that the third Ig-like domain of Necl-5 cis-interacted with the fifth Ig-like domain of the PDGF receptor beta. PMID: 29431243
Studied association of poliovirus receptor (PVR/CD155) mutation and cleft lip and cleft palate. Validated previous findings that PVR/CD155 markers are associated with cleft lip and palate. PMID: 29381645
The authors demonstrate that HIV and specifically Nef and/or Vpu do not modulate CD155 on infected primary T cells and both CD155 and NKG2D ligands synergize as a natural killer cell receptor to trigger natural killer cell lysis of the infected cell. PMID: 27296670
Data show that gastric cancer cells inhibit T-cell metabolism through CD155/TIGIT signaling. PMID: 28883004
Studies showed that CD155 was frequently overexpressed in human malignant tumors. Its overexpression promotes tumor cell invasion and migration, and is associated with tumor progression. [review] PMID: 28730595
soluble CD226 elevated in sera of CTCL patients would be important for tumor immunity by interacting with CD155 on tumor cells. PMID: 28395975
data reveal that MICA and PVR are directly regulated by human cytomegalovirus immediate early proteins, and this may be crucial for the onset of an early host antiviral response PMID: 27733551
The SNP detection assay was successfully developed for identification of Ala67Thr polymorphism in human PVR/CD155 gene. The SNP assay will be useful for large scale screening of DNA samples. PMID: 27834324
sCD155 levels were significantly decreased after surgical resection of cancers. Thus, sCD155 level in serum may be potentially useful as a biomarker for cancer development and progression PMID: 27049654
implying that TIGIT exerts immunosuppressive effects by competing with DNAM-1 for the same ligand, CD155 PMID: 26842126
The present study provides evidence that regulation of the PVR/CD155 DNAM-1 ligand expression by nitric oxide may represent an additional immune-mediated mechanism and supports the anti-myeloma activity of nitric oxide donors. PMID: 25609078
Our findings suggest that loss of CD155 expression may play an important role in the immune escape of HCC cells and thus CD155 may serve as a prognostic marker as well as a potential therapeutic target for HCC. PMID: 25320021
CD155 may play a critical role through both immunological and non-immuno logical mechanisms in pancreatic cancer and may be a therapeutic target for this intractable malignancy. PMID: 25862891
CD155 (PVR/Necl5) mediates a costimulatory signal in CD4+ T cells and regulates allergic inflammation. PMID: 25972481
The cell-surface receptor (Pvr) catalyzes a large structural change in the poliovirus that exposes membrane-binding protein chains. PMID: 25631086
In granulosa cells, there are significant changes in expression during follicular maturation. PMID: 24828608
UPR decreases CD226 ligand CD155 expression and sensitivity to NK cell-mediated cytotoxicity in hepatoma cells. PMID: 25209846
Ala residues 10, 14 and 18 in the TM domain of Vpu are required for CD155 downregulation. PMID: 25113908
TIGIT/PVR ligation signaling mediates suppression of IFN-gamma production via the NF-kappaB pathway. PMID: 24817116
UL141 can inhibit cell-surface expression of both natural killer (NK) cell-activating ligand CD155 as well as TRAIL death receptors (TRAIL-R1 and TRAIL-R2). PMID: 24598754
Vpr upregulates PVR during Hiv-1 infection by activating ATR kinase that triggers the DNA damage rsponse pathway and G2 arrest. PMID: 24045107
The CD226/CD155 interaction regulates the proinflammatory (Th1/Th17)/anti-inflammatory (Th2) balance in humans. PMID: 23980210
PVR resides in the recently identified lateral border recycling compartment, similar to PECAM and CD99. PMID: 23333754
findings suggest Necl-5 expression in lung cancer cells is crucial for their invasiveness in the cancer-stromal interaction PMID: 23276719
The concordant computational and experimental data of the present study indicate that the extent of NECL-5 expression correlates with melanoma progression. PMID: 22929570
we demonstrated the expression of both CD155 mRNA and protein in bone and soft tissue sarcoma cell lines PMID: 22692919
Expression of PVR in B-ALL cells is modulated by epigenetic mechanisms. PMID: 22169283
This investigation has enhanced understanding of cell invasion and confirmed CD44 to play a more significant role in this biological process than CD155. PMID: 22363471
the PVR downmodulation by Nef and Vpu is a strategy evolved by HIV-1 to prevent NK cell-mediated lysis of infected cells. PMID: 22301152
Data show that a high expression of CD112 and CD155 (DNAM-1 ligands) on leukemic blasts. PMID: 21383766
The host TICAM-1 pathway, particularly in macrophages, serves as a source of type I interferon induction that protects poliovirus (PV) receptor-bearing transgenic mice from PV infection and paralytic death. PMID: 21998457
CD155 is an IFNgamma-inducible immune regulatory protein on the surface of human endothelial cells that attenuates the acquisition of effector functions in CD8 T cells. PMID: 21330602
Necl-5 plays a role in mediating tumor cell invasion and that the overexpression of Necl-5 in cancer cells has clinical significance for prognostic evaluation of patients with primary pulmonary adenocarcinoma. PMID: 20331633
We propose that the cytoplasmic domain may target CD155-containing endocytic vesicles to the microtubular network PMID: 11751937
activation of expression of sonic hedgehog protein PMID: 11983699
Data show that both PVR and Nectin-2 represent specific ligands for the DNAM-1 triggering receptor. PMID: 12913096
CD155 may have an important role in cellular function PMID: 12943679
These data indicate that Tage4 represents the functional orthologue of CD155 in mouse. PMID: 14652024
that DNAM-1 regulates monocyte extravasation via its interaction with CD226 expressed at endothelial junctions on normal cells. PMID: 15136589
These results suggest that CD155alpha plays a role in the regulation of cell adhesion and cell motility. PMID: 15194502
cytoplasmic domain of PVR directly interacts with Tctex-1 and plays an important role in retrograde transport of poliovirus-containing vesicles along microtubules in vivo PMID: 15194795
Upregulation of the molecular target CD155 renders explant cultures of high-grade malignant gliomas highly susceptible to a prototype oncolytic poliovirus recombinant. PMID: 15279713
Analysis of the ligands for triggering NK receptors revealed the consistent expression of cd155 and cd112 in myeloid leukemias, and less frequent expression in lymphoblastic leukemias PMID: 15536144
Evasion of NK cell killing was mediated by human cytomegalovirus UL141 blocking surface expression of CD155 PMID: 15640804
Necl-5 has a critical role in integrin alphavbeta3 clustering and focal complex formation PMID: 17446174
Results describe the establishment of a poliovirus oral infection system in human poliovirus receptor-expressing transgenic mice that are deficient in alpha/beta interferon receptor. PMID: 17507470
no statistically significant association between this marker allele and non-syndromic clefting PMID: 17534374
CD155, at least in part, enhances the proliferation of ras-mutated cells PMID: 17893876
crystal structure of C155 D1D2 has been determined to 3.5-A resolution and fitted into approximately 8.5-A resolution cryoelectron microscopy reconstructions of the virus-receptor complexes for the 3 PV serotypes PMID: 19011098

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.