C1qR1/CD93 Proteome Profiler Antibody Arrays

C1qR1 is also known as C1qRp, collectin receptor, and AA4 antigen. C1qR1 mediates enhanced phagocytosis by monocytes and macrophages upon interaction with soluble defense collagens including C1q, MBL, and SP-A. It is a type I transmembrane glycoprotein expressed on endothelial cells, hematopoietic progenitor cells, platelets, and cells of myeloid origin. C1qR1 has also been identified as a hematopoietic stem cell marker.