CR1: Target/Biomarker Introduction, products summarized (antibody/ADC/bispecific/antigen/ORF vector/VLP) and disease/indication/condition/MOA for drug discovery and IVD

It's the GeneMedi's summary page for Target/Biomarker Introduction of CR1. The page also collects GeneMedi's different modalities and formats products for CR1 in therapeutics/drug discovery and IVD diagnostics, which is including antibody, ADC, bispecific, antigen, ORF vector, VLP, etc. With GeneMedi's target-insight database-GM ITD database, the CR1 target is also connected to human indications/diseases/conditions/MOA.

Target sublocation: Transmembrane Protein.

This gene is a member of the receptors of complement activation (RCA) family and is located in the 'cluster RCA' region of chromosome 1. The genome is polymorphic at this locus with allele-specific splice variants encoding different isoforms, based on the presence/absence of long homologous repeats (LHRs). The gene encodes a monomeric single-pass type I membrane glycoprotein found on erythrocytes, leukocytes, glomerular podocytes, and splenic follicular dendritic cells. The Knops blood group system is a system of antigens located on this protein. The protein mediates cellular binding to particles and immune complexes that have activated complement. Decreases in expression of this protein and/or mutations in this gene have been associated with gallbladder carcinomas, mesangiocapillary glomerulonephritis, systemic lupus erythematosus, sarcoidosis and Alzheimer's disease. Mutations in this gene have also been associated with a reduction in Plasmodium falciparum rosetting, conferring protection against severe malaria. [provided by RefSeq, May 2020]

Target IDGM-T48457
Target NameCR1
Gene ID1378,718120
Gene Symbol and SynonymsC3BR,C4BR,CD35,CR1,KN
Uniprot AccessionP17927
Uniprot Entry NameCR1_HUMAN
Protein Sub-locationTransmembrane Protein
CategoryTherapeutics Target
DiseaseN/A
Gene EnsemblENSG00000203710
Target ClassificationN/A


Pre-made anti-CR1 inhibitory monoclonal antibody(mab, blocking antibody inhibitor)-benchmark antibody for drug discovery and mechanism of action (MOA) research

Pre-made anti-CR1 benchmark inhibitory monoclonal antibody(mab, blocking antibody inhibitor) is expressed by mammalian cell line as a benchmark antibody for cell culture, FACS, ELISA or other affinity binding assay or functional assay development, animal model development, PK/PD model development (Pharmacokinetics & Pharmacodynamic). The anti-CR1 mab is expressed and produced by mammalian cell line as a benchmark reference therapeutic antibody for biological drug discovery items including cell culture, assay development, animal model development, PK/PD model development (Pharmacokinetics & Pharmacodynamic) and mechanism of action (MOA) research.

Antibody NameSpeciesFormatClassified by tagDetail
Anti-CR1 monoclonal antibodyHuman, Cynomolgus/ Rhesus macaque, Rat, Mouse, Feline, Canine, Bovine, EquinemabFACS/Biofunctional Antibody, Therapeutics Target antibodyDetail



Multi-species CR1/ C3BR/ C4BR VLP (virus-like particle) for cell curture, in vitro study, in vivo study, benchmark, drug discovery & MOA research and positive control for the diagnosis

Genemedi produces Human, Cynomolgus/ Rhesus macaque, Rat, Mouse, Feline, Canine, Bovine, Equine CR1 VLP (virus-like particle) for cell curture, in vitro study, in vivo study, benchmark, drug discovery & MOA research and positive control for the diagnosis.

Products NameSpeciesExpression PlatformDetail
CR1 VLP (virus-like particle)Human, Cynomolgus/ Rhesus macaque, Rat, Mouse, Feline, Canine, Bovine, EquineMammalian cellProducts Developing