| Gene Symbol | CR2 |
| Full Name | Complement Receptor Type 2 (CD21) |
| Aliases | Complement Receptor Type 2, CD21 |
| Chromosome | 1q32 |
| Protein Type | Receptor |
| Function | is a membrane glycoprotein that serves as a primary receptor for fragments of complement component C3, particularly C3d, C3dg, and iC3b. |
| Primary Expression | some tissues |
| Amino Acids | 1458 aa |
| Exons | 25 |
| UniProt ID | P08578 |
| NCBI Gene ID | 1380 |
| Ensembl ID | ENSG00000117322 |
| OMIM | 120650 |
| GeneCards | CR2 |
| Human Protein Atlas | CR2 |
| Associated Diseases | ALS, Alzheimer, Alzheimer's disease, Dementia, Ms, Parkinson's disease |
| Interactions | AQP4, ASTROCYTE, CYTOKINES, AND, ASTROCYTES, OLIGODENDROCYTE |
| KG Connections | 62 knowledge graph edges |
| Databases | GeneCardsHPASTRING |