| Primary Identifier | IPR015274 | Type | Domain |
| Short Name | CD4-extracel |
| description | This domain adopts an immunoglobulin-like β-sandwich with seven strands in 2 beta sheets, in a Greek key topology. It is predominantly found in the extracellular portion of CD4 proteins, where it enables interaction with major histocompatibility complex class II antigens []. |
