Table 1. Sequence identities between the novel zebrafish IGFBP and other IGFBPs.
| Species†/Protein | IGFBP-1 | IGFBP-2 | IGFBP-3 | IGFBP-4 | IGFBP-5 | IGFBP-6 |
| human | 35 | 28 | 28 | 33 | 30 | 30 |
| mouse | 34 | 27 | 30 | 33 | 32 | 27 |
| rat | 33 | 27 | 28 | 33 | 31 | 27 |
| pig | 36 | 27 | 30 | - | 31 | - |
| bovine | 37 | 29 | 28 | 33 | 25 | 26 |
| chicken | 35 | 27 | - | 35 | - | - |
| frog | 33 | - | - | 32* | 30 | - |
| salmon | 55 | - | - | - | - | - |
| trout | 55 | 27 | 25 | 24* | 31 | 25 |
| fugu | 56*/55*/50* | 28*/28* | 30 | 33 | 30 | - |
| tetraodon | 32 | 30*/29 | 31/28* | - | 36* | 27 |
| zebrafish | 50 | 28 | 26 | - | 30 | - |
†
human (Homo sapiens), mouse (Mus musculus), rat (Rattus norvegicus), pig (Sus scrofa), bovine (Bos taurus), chicken (Gallus gallus), frog (Xenopus laevis), salmon (Oncorhynchus tshawytscha), trout (Oncorhynchus mykiss), fugu (Takifugu rubripes), tetraodon (Tetraodon nigroviridis), zebrafish (Danio rerio).
*
Compared with corresponding partial sequences.