There are 3 classes of receptors for the Fc region of IgG (FcγRs): FcγRI (CD64), FcγRII (CD32), and FcγRIII (CD16), each with multiple isoforms.  All these receptors are members of the Ig superfamily (IgSF) and they play important roles in the activation or inhibition of immune responses. FcγRI (CD64) is a high-affinity receptor for IgG while both FcγRII and FcγRIII are low-affinity receptors that bind IgG in the form of immune complexes. CD64 is single pass transmembrane protein with 3 extracellular Ig-like C2 type motifs. CD64 is expressed constitutively on monocytes and macrophages and can be induced on neutrophils and eosinophils.  Its expression is up-regulated during bacterial infections and sepsis. CD64 functions in both innate and adaptive immune responses.  The high affinity recognition of IgG by Fc gamma  RI permits the triggering of effector responses at low IgG concentrations typical of early immune responses. Three highly homologous genes (A, B, and C) with 98% DNA sequence identity have been identified for the human CD64 group. The genes for isoform B and C contain stop codons within their membrane proximal Ig-like motifs generating possible secreted receptors.  A splice variant of CD64 has a deletion of the membrane-proximal Ig-like domain resulting in a putative transmembrane receptor.

There are 3 classes of receptors for the Fc region of IgG (FcγRs): FcγRI (CD64), FcγRII (CD32), and FcγRIII (CD16), each with multiple isoforms.  All these receptors are members of the Ig superfamily (IgSF) and they play important roles in the activation or inhibition of immune responses. FcγRI (CD64) is a high-affinity receptor for IgG while both FcγRII and FcγRIII are low-affinity receptors that bind IgG in the form of immune complexes. CD64 is single pass transmembrane protein with 3 extracellular Ig-like C2 type motifs. CD64 is expressed constitutively on monocytes and macrophages and can be induced on neutrophils and eosinophils.  Its expression is up-regulated during bacterial infections and sepsis. CD64 functions in both innate and adaptive immune responses.  The high affinity recognition of IgG by Fc gamma  RI permits the triggering of effector responses at low IgG concentrations typical of early immune responses. Three highly homologous genes (A, B, and C) with 98% DNA sequence identity have been identified for the human CD64 group. The genes for isoform B and C contain stop codons within their membrane proximal Ig-like motifs generating possible secreted receptors.  A splice variant of CD64 has a deletion of the membrane-proximal Ig-like domain resulting in a putative transmembrane receptor.

 

Product Details

 

Gene Symbol: CD64; FCGR1A; FCRI; CD64A; FCG1; FCGR1; IGFR1; FCGRI

 

NCBI Gene ID: 2209

 

Uniprot Entry: P12314

 

Construct Details: Full length human CD64/FCGR1 gene (encoding UniProt #P12314) 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 +/- a selection marker, 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: 1125 (bp)

 

Gene Insert Sequence:  

ATGTGGTTCTTGACAACTCTGCTCCTTTGGGTTCCAGTTGATGGGCAAGTGGACACCACAAAGGCAGTGA

TCACTTTGCAGCCTCCATGGGTCAGCGTGTTCCAAGAGGAAACCGTAACCTTGCACTGTGAGGTGCTCCA

TCTGCCTGGGAGCAGCTCTACACAGTGGTTTCTCAATGGCACAGCCACTCAGACCTCGACCCCCAGCTAC

AGAATCACCTCTGCCAGTGTCAATGACAGTGGTGAATACAGGTGCCAGAGAGGTCTCTCAGGGCGAAGTG

ACCCCATACAGCTGGAAATCCACAGAGGCTGGCTACTACTGCAGGTCTCCAGCAGAGTCTTCACGGAAGG

AGAACCTCTGGCCTTGAGGTGTCATGCGTGGAAGGATAAGCTGGTGTACAATGTGCTTTACTATCGAAAT

GGCAAAGCCTTTAAGTTTTTCCACTGGAATTCTAACCTCACCATTCTGAAAACCAACATAAGTCACAATG

GCACCTACCATTGCTCAGGCATGGGAAAGCATCGCTACACATCAGCAGGAATATCTGTCACTGTGAAAGA

GCTATTTCCAGCTCCAGTGCTGAATGCATCTGTGACATCCCCACTCCTGGAGGGGAATCTGGTCACCCTG

AGCTGTGAAACAAAGTTGCTCTTGCAGAGGCCTGGTTTGCAGCTTTACTTCTCCTTCTACATGGGCAGCA

AGACCCTGCGAGGCAGGAACACATCCTCTGAATACCAAATACTAACTGCTAGAAGAGAAGACTCTGGGTT

ATACTGGTGCGAGGCTGCCACAGAGGATGGAAATGTCCTTAAGCGCAGCCCTGAGTTGGAGCTTCAAGTG

CTTGGCCTCCAGTTACCAACTCCTGTCTGGTTTCATGTCCTTTTCTATCTGGCAGTGGGAATAATGTTTT

TAGTGAACACTGTTCTCTGGGTGACAATACGTAAAGAACTGAAAAGAAAGAAAAAGTGGGATTTAGAAAT

CTCTTTGGATTCTGGTCATGAGAAGAAGGTAATTTCCAGCCTTCAAGAAGACAGACATTTAGAAGAAGAG

CTGAAATGTCAGGAACAAAAAGAAGAACAGCTGCAGGAAGGGGTGCACCGGAAGGAGCCCCAGGGGGCCA

CGTAG

 

 

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

 

1. Immunol. Today 14:215 (1993).

2. J Biol Chem. 270 (43): 25762 (1995)

3. Science 290:84 (2000)

4. Annu. Rev. Immunol.19:275 (2001).

5. Nature Rev. Immunol. 2:580 (2002)

 

 

 

Documentation

 

Product datasheet (pdf) can be downloaded here: LTP2491-PDS.pdf

 

 

 

Additional supporting documents, including 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.