| ChromDB ID | Organism | Formal Name | Locus |
| HTB301 | Caenorhabditis elegans | ||
| HTB302 | Caenorhabditis elegans | ||
| HTB303 | Caenorhabditis elegans | his-8 | |
| HTB304 | Caenorhabditis elegans | ||
| HTB305 | Caenorhabditis elegans | his-20 | |
| HTB306 | Caenorhabditis elegans | his-52 | |
| HTB307 | Caenorhabditis elegans | his-4 | |
| HTB308 | Caenorhabditis elegans | his-29 | |
| HTB309 | Caenorhabditis elegans | ||
| HTB310 | Caenorhabditis elegans | ||
| HTB311 | Caenorhabditis elegans | his-44 | |
| HTB312 | Caenorhabditis elegans | ||
| HTB313 | Caenorhabditis elegans | his-58 | |
| HTB314 | Caenorhabditis elegans | his-48 | |
| HTB16001 | Danio rerio | hist2h2l | |
| HTB16002 | Danio rerio | LOC563490 | |
| HTB16003 | Danio rerio | LOC560974 | |
| HTB501 | Homo sapiens | HIST1H2BC | |
| HTB502 | Homo sapiens | HIST1H2BD | |
| HTB503 | Homo sapiens | HIST1H2BE | |
| HTB504 | Homo sapiens | HIST1H2BL | |
| HTB505 | Homo sapiens | HIST1H2BI | |
| HTB506 | Homo sapiens | HIST1H2BH | |
| HTB507 | Homo sapiens | HIST1H2BB | |
| HTB508 | Homo sapiens | HIST1H2BG | |
| HTB509 | Homo sapiens | HIST1H2BN | |
| HTB14902 | Strongylocentrotus purpuratus | LOC587419 | |
| HTB14901 | Strongylocentrotus purpuratus | LOC373347 |