Fagus Antibody Services

Recombinant Human CD93/C1QR1 Protein (aa 1-580, His Tag)

£585.60£732.00 excluding VAT

CD93 or C1q receptor 1 (C1qR) is an about 120 kDa O-sialoglycoprotein that within the hematopoietic system is selectively expressed on cells of the myeloid lineage. CD93/C1qR is a highly glycosylated transmembrane protein expressed on monocytes; neutrophils; endothelial cells; and stem cells. CD93 was originally identified as a myeloid cell-surface marker and subsequently associated with an ability to modulate phagocytosis of suboptimally opsonized immunoglobulin G and complement particles in vitro. CD93/C1qR; a receptor expressed during early B-cell development; is reinduced during plasma-cell differentiation. High CD93/CD138 expression was restricted to antibody-secreting cells both in T-dependent and T-independent responses as naive; memory; and germinal-center B cells remained CD93-negative. CD93 was expressed on (pre)plasmablasts/plasma cells; including long-lived plasma cells that showed decreased cell cycle activity; high levels of isotype-switched Ig secretion; and modification of the transcriptional network. CD93 is important for the maintenance of plasma cells in bone marrow niches.



Active Protein
Protein Construction

A DNA sequence encoding the human CD93 (Q9NPY3) extracellular domain (Met 1-Lys 580) was fused with a polyhistidine tag at the C-terminus.


Met 1-Lys 580

Fusion Tag






Expressed Host

HEK293 Cells


This product is provided as lyophilized powder which is shipped with ice packs.


> 90 % as determined by reducing SDS-PAGE.


< 1.0 EU per µg as determined by the LAL method.

Stability and Storage

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.

Mol Mass

59.6 kDa

AP Mol Mass

100 kDa


Lyophilized from sterile PBS, pH 7.4

Research Areas

Cardiovascular, immunology, Stem cells


Please refer to the printed manual for detailed information.

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