Recombinant Human Herpesvirus 8 Type P Protein (ORF), Active

Name: Recombinant Human Herpesvirus 8 Type P Protein (ORF), Active
Brand: Beta LifeScience
SKU: BLC-05667P
Availability: InStock

Collections: Featured viral antigens molecules, Other viral antigens, Recombinant proteins, Viral antigen

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Product Overview

Description	Recombinant Human Herpesvirus 8 Type P Protein (ORF), Active is produced by our E.coli expression system. This is a protein fragment.
Purity	Greater than 97% as determined by SDS-PAGE and HPLC.
Endotoxin	Less than 1.0 EU/μg as determined by LAL method.
Activity	Fully biologically active when compared to standard. The specific activity is determined by the inhibitory effect on monocyte migration response to human MIP-1 alpha using a concentration range of 1.0ug-10.0ug/ml of viral MIP-2 will inhibit 25ng/ml of human MIP-1 alpha.
Uniprotkb	Q98157
Target Symbol	ORF
Synonyms	ORF; K4; Viral macrophage inflammatory protein 2; Viral macrophage inflammatory protein II; vMIP-II; vMIP-1B
Species	Human herpesvirus 8 type P (isolate GK18) (HHV-8) (Kaposi\'s sarcoma-associated herpesvirus)
Expression System	E.coli
Tag	Tag-Free
Complete Sequence	LGASWHRPDK CCLGYQKRPL PQVLLSSWYP TSQLCSKPGV IFLTKRGRQV CADKSKDWVK KLMQQLPVTA
Expression Range	24-93aa
Protein Length	Partial
Mol. Weight	8.0 kDa
Research Area	Immunology
Form	Lyophilized powder
Buffer	Lyophilized from a 0.2 µm filtered PBS, 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	Blocks infection by several different human immunodeficiency virus type 1 (HIV-1) strains. This occurs because vMIP-II binds to a wide range of chemokine receptors. May form part of the response to host defenses contributing to virus-induced neoplasia and may have relevance to KSHV and HIV-I interactions.
Subcellular Location	Secreted.
Protein Families	Intercrine beta (chemokine CC) family
Database References	KEGG: vg:4961514

Gene Functions References

this study reports the crystal structure of the chemokine receptor CXCR4 in complex with the viral chemokine antagonist vMIP-II at 3.1 angstrom resolution. PMID: 25612609
A dimeric vMIP-II mutant binds to heparin much more tightly than wild-type vMIP-II. PMID: 20712376
vMIP-II forms crystallographic dimers in our tetragonal crystal through interactions between N-termini, which is the interaction pattern also observed in the asymmetric unit of previously reported crystal form. PMID: 17243149
vCCL2 was found to act as a broad spectrum chemokine antagonist of human chemokine receptors, including the lymphotactin receptor PMID: 17403668

FAQs

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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.