VSIG4 (V-set and immunoglobulin domain-containing protein 4), Z39Ig or CRIg (complement receptor of the immunoglobulin superfamily) is a single pass type I transmembrane protein belonging to the Immunoglobulin superfamily (IgSF).  VSIG4 contains a 264 aa extracellular region (ECD) with 1 V-type Ig­-like (IgV) domain and 1 C2-type Ig-like (IgC2) domain, a transmembrane (TM) domain and a 95 aa cytoplasmic tail. VSIG4 is bundantly expressed in several fetal tissues. In adult tissues, highest expression is seen in lung and placenta. VSIG4 is also expressed in resting macrophages.  The VSIG4 gene is  is structurally related to the B7 family of immune regulatory proteins. TVSIG4 may be a negative regulator of T-cell responses. VSIG4 may act as a phagocytic receptor, strong negative regulator of T-cell proliferation and IL2 production.  VSIG4 is also a receptor for the complement component 3 fragments C3b and iC3b.  VSIG4 may function as a potent inhibitor of the alternative complement pathway convertases. 

VSIG4 (V-set and immunoglobulin domain-containing protein 4), Z39Ig or CRIg (complement receptor of the immunoglobulin superfamily) is a single pass type I transmembrane protein belonging to the Immunoglobulin superfamily (IgSF).  VSIG4 contains a 264 aa extracellular region (ECD) with 1 V-type Ig­-like (IgV) domain and 1 C2-type Ig-like (IgC2) domain, a transmembrane (TM) domain and a 95 aa cytoplasmic tail. VSIG4 is bundantly expressed in several fetal tissues. In adult tissues, highest expression is seen in lung and placenta. VSIG4 is also expressed in resting macrophages.  The VSIG4 gene is  is structurally related to the B7 family of immune regulatory proteins. TVSIG4 may be a negative regulator of T-cell responses. VSIG4 may act as a phagocytic receptor, strong negative regulator of T-cell proliferation and IL2 production.  VSIG4 is also a receptor for the complement component 3 fragments C3b and iC3b.  VSIG4 may function as a potent inhibitor of the alternative complement pathway convertases. 

 

Product Details

 

Gene Symbol: VSIG4; CRIg; Z39IG

 

NCBI Gene ID: 11326

 

Uniprot Entry: Q9Y279

 

Construct Details: Full length human VSIG4 gene is subcloned into the Lentiviral expression vector pLTC with an upstream CMV promoter and with or without a selection marker, which can be used for both transient and stable expression in mammalian cells.  It can be co-transfected with the LentiPAK DNA mix (SKU# LP-001) into HEK293 cells to produce high titer lentiviral particles. Multiple choices of a stable antibiotic selection marker are available.

 

Vector Type: pLTC or pLTC-IRES-Marker (lentiviral expression vector containing a heterologous CMV promoter, see the vector map above)

 

Formulation: Supplied with 10 μg of endotoxin-free plasmid DNA at 200 ng/μl in sterile TE buffer (pH8.0)

 

Gene Insert Size: 1200 (bp)

 

Gene Insert Sequence:  

ATGGGGATCTTACTGGGCCTGCTACTCCTGGGGCACCTAACAGTGGACACTTATGGCCGTCCCATCCTGG

AAGTGCCAGAGAGTGTAACAGGACCTTGGAAAGGGGATGTGAATCTTCCCTGCACCTATGACCCCCTGCA

AGGCTACACCCAAGTCTTGGTGAAGTGGCTGGTACAACGTGGCTCAGACCCTGTCACCATCTTTCTACGT

GACTCTTCTGGAGACCATATCCAGCAGGCAAAGTACCAGGGCCGCCTGCATGTGAGCCACAAGGTTCCAG

GAGATGTATCCCTCCAATTGAGCACCCTGGAGATGGATGACCGGAGCCACTACACGTGTGAAGTCACCTG

GCAGACTCCTGATGGCAACCAAGTCGTGAGAGATAAGATTACTGAGCTCCGTGTCCAGAAACTCTCTGTC

TCCAAGCCCACAGTGACAACTGGCAGCGGTTATGGCTTCACGGTGCCCCAGGGAATGAGGATTAGCCTTC

AATGCCAGGCTCGGGGTTCTCCTCCCATCAGTTATATTTGGTATAAGCAACAGACTAATAACCAGGAACC

CATCAAAGTAGCAACCCTAAGTACCTTACTCTTCAAGCCTGCGGTGATAGCCGACTCAGGCTCCTATTTC

TGCACTGCCAAGGGCCAGGTTGGCTCTGAGCAGCACAGCGACATTGTGAAGTTTGTGGTCAAAGACTCCT

CAAAGCTACTCAAGACCAAGACTGAGGCACCTACAACCATGACATACCCCTTGAAAGCAACATCTACAGT

GAAGCAGTCCTGGGACTGGACCACTGACATGGATGGCTACCTTGGAGAGACCAGTGCTGGGCCAGGAAAG

AGCCTGCCTGTCTTTGCCATCATCCTCATCATCTCCTTGTGCTGTATGGTGGTTTTTACCATGGCCTATA

TCATGCTCTGTCGGAAGACATCCCAACAAGAGCATGTCTACGAAGCAGCCAGGGCACATGCCAGAGAGGC

CAACGACTCTGGAGAAACCATGAGGGTGGCCATCTTCGCAAGTGGCTGCTCCAGTGATGAGCCAACTTCC

CAGAATCTGGGCAACAACTACTCTGATGAGCCCTGCATAGGACAGGAGTACCAGATCATCGCCCAGATCA

ATGGCAACTACGCCCGCCTGCTGGACACAGTTCCTCTGGATTATGAGTTTCTGGCCACTGAGGGCAAAAG

TGTCTGTTAA

 

 

Primers: Gene insert coding sequence can be confirmed by following primers:

(a) forward (or 5'-end) primer: 5’-CAAATGGGCGGTAGGCGTG-3’;

(b) reverse (or 3'-end) primer: 5’-CCAGGTTTCCGGGCCCTCAC-3’

 

 

Note: The sequence may vary due to the naturally occurring variants or mutations, such as single nucleotide polymorphism, or the artifact during PCR amplification.  High fidelity PCR systems should always be used. 

 

 

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

Restriction: This product is not transferable or re-sellable.  Customer obtain no right to transfer, assign, or sublicense its use rights, or to transfer, resell, package, or otherwise distribute the product, or to use the product for the benefit of any third party or for any commercial purpose.  Customer may only use the product in compliance with applicable local, state and federal laws, regulations and rules.  Customer may not directly or indirectly use the product or allow the transfer, transmission, export or re-export of all or any part of the product in violation of any export control law or regulation of the united states or any other relevant jurisdiction.  Your use of this product constitutes acceptance of the terms of this limited use agreement.  Please refer to our “terms & conditions” for details.  If you are not willing to accept the limitation of this agreement, G&P Biosciences will accept return of the product for a full/partial refund.

 

Storage

 

The product is shipped at 4°C. Upon receipt, centrifuge the product briefly before opening the vial. It is recommended to store small aliquots at the temperature below –20°C for long-term storage and the product is stable for 6 months. 

 

 

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

 

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

 

References

 

 

 

 

Additional supporting documents, including PDS, COA and MSDS are available upon request.

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

Restriction: This product is not transferable or re-sellable.  Customer obtain no right to transfer, assign, or sublicense its use rights, or to transfer, resell, package, or otherwise distribute the product, or to use the product for the benefit of any third party or for any commercial purpose.  Customer may only use the product in compliance with applicable local, state and federal laws, regulations and rules.  Customer may not directly or indirectly use the product or allow the transfer, transmission, export or re-export of all or any part of the product in violation of any export control law or regulation of the united states or any other relevant jurisdiction.  Your use of this product constitutes acceptance of the terms of this limited use agreement.  Please refer to our “terms & conditions” for details.  If you are not willing to accept the limitation of this agreement, G&P Biosciences will accept return of the product for a full/partial refund.