| Synonym | Reference | Specificity |
| Histone H2A | Exact | |
| histone H2A | Exact | |
| Histone 2A | Exact |
| Identifier | Name | Relation |
| HGNC:20508 | H2AC21 | isa |
| HGNC:20664 | H2AZ2 | isa |
| HGNC:4729 | H2AC7 | isa |
| HGNC:4740 | MACROH2A1 | isa |
| UP:Q6FI13 | H2AC18 | isa |
| UP:P0C0S8 | H2AC11 | isa |
| HGNC:4738 | H2AC20 | isa |
| UP:P04908 | H2AC4 | isa |
| HGNC:14453 | MACROH2A2 | isa |
| HGNC:18729 | H2AC1 | isa |
| HGNC:22516 | H2AB1 | isa |
| HGNC:14456 | H2AJ | isa |
| HGNC:4741 | H2AZ1 | isa |
| HGNC:13671 | H2AC12 | isa |
| HGNC:20507 | H2AW | isa |
| HGNC:4733 | H2AC6 | isa |
| UP:P0C5Y9 | H2AB1 | isa |
| HGNC:4739 | H2AX | isa |
| HGNC:4727 | H2AC14 | isa |
| Relation | Identifier | Name |
| isa | FPLX:Histone | Histone |