Recombinant Canine Fc gamma RI / CD64 Protein, His Tag (MALS & SPR verified), 50µg

Background
Receptors that recognize the Fc portion of IgG are divided into three groups designated Fc gamma RI, RII, and RIII, also known respectively as CD64, CD32, and CD16. Fc gamma RI binds IgG with high affinity and functions during early immune responses. Fc gamma RII and RIII are low affinity receptors that recognize IgG as aggregates surrounding multivalent antigens during late immune responses. High affinity immunoglobulin gamma Fc receptor I is also known as FCGR1A, FCG1, FCGR1, CD64 and IGFR1, is a type of integral membrane glycoprotein that binds monomeric IgG-type antibodies with high affinity, which belongs to the immunoglobulin superfamily or FCGR1 family. FCGR1A / CD64 contains 3 Ig-like C2-type (immunoglobulin-like) domains. CD64 is constitutively found on only macrophages and monocytes, but treatment of polymorphonuclear leukocytes with cytokines like IFNγ and G-CSF can induce CD64 expression on these cells.

Source
Recombinant Canine CD64, His Tag(FCA-C52H8) is expressed from human 293 cells (HEK293). It contains AA Gln 16 - Pro 288 (Accession # XP_025308990.1 ).Predicted N-terminus: Gln 16

Molecular Characterization
This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 32.4 kDa. The protein migrates as 36-46 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Endotoxin
Less than 1.0 EU per μg by the LAL method.

Purity
>90% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.

Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.

Reconstitution
See Certificate of Analysis for details of reconstitution instruction and specific concentration.

Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70^°C for 12 months under sterile conditions after reconstitution.

Bioactivity
Please refer to product data sheet.

Clinical and Translational Updates

(1) "IgG antispike persistence and immunophenotype in children infected by SARS-CoV-2"
García-Salido, Flores-Pérez, González-Murillo et al
Acta Paediatr (2023) 112 (4), 805-812
(2) "Neuronal C-Reactive Protein/FcγRI Positive Feedback Proinflammatory Signaling Contributes to Nerve Injury Induced Neuropathic Pain"
Liu, Zhang, Su et al
Adv Sci (Weinh) (2023) 10 (10), e2205397
(3) "Development of an Aptamer-Based Molecular Tool for Specifically Targeting Microglia via the CD64 Protein"
Zhu, Wu, Pan et al
Anal Chem (2023) 95 (6), 3238-3246
Showing 1-3 of 800 papers.

Citations

(1) "A SARS-CoV-2 neutralizing antibody with extensive Spike binding coverage and modified for optimal therapeutic outcomes"
Authors: Guo Y, Huang L, Zhang G, et al.
Journal: Nature communications 2021
Application: ELISA