| ID | Definition | Species | Length | Seq. |
| CL0001 | protease,Ca dependent | Gallus gallus (chicken) | 705 | FASTA |
| CL0002 | Ca dependent Cys protease p94 | Rattus norvegicus (Norway rat) | 821 | FASTA |
| CL0003 | Chain A, Crystal Structure Of M-Calpain | Rattus norvegicus (Norway rat) | 700 | FASTA |
| CL0004 | Chain L, Crystal Structure Of Human M-Calpain Form Ii | Homo sapiens (human) | 699 | FASTA |
| CL0005 | Chain L, Crystal Structure Of Human M-Calpain Form I | Homo sapiens (human) | 699 | FASTA |
| CL0006 | Chain A, Crystal Structure Of Calcium-Bound Protease Core Of Calpain I | Rattus norvegicus (Norway rat) | 339 | FASTA |
| CL0007 | Chain B, Crystal Structure Of Calcium-Bound Protease Core Of Calpain I | Rattus norvegicus (Norway rat) | 339 | FASTA |
| CL0008 | Chain A, Crystal Structure Of Calcium-Bound Protease Core Of Calpain Ii Reveals The Basis For Intrinsic Inactivation | Rattus norvegicus (Norway rat) | 328 | FASTA |
| CL0009 | Chain B, Crystal Structure Of Calcium-Bound Protease Core Of Calpain Ii Reveals The Basis For Intrinsic Inactivation | Rattus norvegicus (Norway rat) | 328 | FASTA |
| CL0010 | Chain A, Crystal Structure Of A Mu-Like Calpain | Rattus norvegicus (Norway rat) | 900 | FASTA |
| CL0011 | Chain B, Crystal Structure Of A Mu-Like Calpain | Rattus norvegicus (Norway rat) | 900 | FASTA |
| CL0012 | Chain A, High Resolution Crystal Structure Of Calpain I Protease Core In Complex With Leupeptin | Rattus norvegicus (Norway rat) | 339 | FASTA |
| CL0013 | Chain A, High Resolution Crystal Structure Of Calpain I Protease Core In Complex With E64 | Rattus norvegicus (Norway rat) | 339 | FASTA |
| CL0014 | Chain A, Crystal Structure Analysis Of Rat M-Calpain Mutant Lys10 Thr | Rattus norvegicus (Norway rat) | 700 | FASTA |
| CL0015 | Chain A, Human Calpain Protease Core Inhibited By Zllych2f | Homo sapiens (human) | 321 | FASTA |
| CL0016 | Chain A, Catalytic Domain Of Human Calpain-9 | Homo sapiens (human) | 339 | FASTA |
| CL0017 | calpain:SUBUNIT=large:ISOTYPE=mu | Gallus gallus (chicken) | 586 | FASTA |
| CL0018 | calpain:SUBUNIT=large:ISOTYPE=m | Gallus gallus (chicken) | 700 | FASTA |
| CL0019 | calpain:SUBUNIT=large:ISOTYPE=p94 | Gallus gallus (chicken) | 810 | FASTA |
| CL0020 | Chain A, Catalytic Domain Of Human Calpain-1 | Homo sapiens (human) | 351 | FASTA |
| CL0021 | Chain B, Catalytic Domain Of Human Calpain-1 | Homo sapiens (human) | 351 | FASTA |
| CL0022 | Chain A, Calpain 1 Proteolytic Core In Complex With Snj-1715, A Cyclic Hemiacetal-Type Inhibitor | Rattus norvegicus (Norway rat) | 339 | FASTA |
| CL0023 | Chain A, Calpain 1 Proteolytic Core In Complex With Snj-1945, A Alpha-Ketoamide-Type Inhibitor. | Rattus norvegicus (Norway rat) | 339 | FASTA |
| CL0024 | Chain A, Catalytic Domain Of Human Calpain 8 | Homo sapiens (human) | 326 | FASTA |
| CL0025 | Chain B, Catalytic Domain Of Human Calpain 8 | Homo sapiens (human) | 326 | FASTA |
| CL0026 | Chain A, Calpain 1 Proteolytic Core Inactivated By Wr18(S,S), An Epoxysuccinyl-Type Inhibitor. | Rattus norvegicus (Norway rat) | 339 | FASTA |
| CL0027 | Chain A, Calpain 1 Proteolytic Core Inactivated By Wr13(R,R), An Epoxysuccinyl-Type Inhibitor. | Rattus norvegicus (Norway rat) | 339 | FASTA |
| CL0028 | Chain A, Structure Of Human Calpain 9 In Complex With Leupeptin | Homo sapiens (human) | 333 | FASTA |
| CL0029 | Chain B, Structure Of Human Calpain 9 In Complex With Leupeptin | Homo sapiens (human) | 333 | FASTA |
| CL0030 | RecName: Full=Calpain-7 | Sus scrofa (pig) | 813 | FASTA |
| CL0031 | calpain (EC 3.4.22.17) large chain - fruit fly (Drosophila melanogaster) | Drosophila melanogaster (fruit fly) | 805 | FASTA |
| CL0032 | calpain II 80 kDa subunit | Rattus norvegicus (Norway rat) | 700 | FASTA |
| CL0033 | skeletal muscle-specific calpain | Sus scrofa (pig) | 374 | FASTA |
| CL0034 | thiol protease [Porphyromonas gingivalis] | Porphyromonas gingivalis | 482 | FASTA |
| CL0035 | Calpain | Schistosoma mansoni | 758 | FASTA |
| CL0036 | calcium-activated neutral proteinase | Schistosoma mansoni | 758 | FASTA |
| CL0037 | calcium-dependent protease | Oryctolagus cuniculus (rabbit) | 422 | FASTA |
| CL0038 | neutral protease large subunit | Homo sapiens (human) | 700 | FASTA |
| CL0039 | p94 protein | Rattus norvegicus (Norway rat) | 821 | FASTA |
| CL0040 | calcium-dependent protease large subunit | Homo sapiens (human) | 79 | FASTA |
| CL0041 | calpain | Sus scrofa (pig) | 138 | FASTA |
| CL0042 | sex determination [Caenorhabditis elegans] | Caenorhabditis elegans | 648 | FASTA |
| CL0043 | calpain large subunit [Mus musculus] | Mus musculus (house mouse) | 688 | FASTA |
| CL0044 | calpain large subunit [Rattus norvegicus] | Rattus norvegicus (Norway rat) | 674 | FASTA |
| CL0045 | micromolar calcium activated neutral protease large subunit [Mus musculus] | Mus musculus (house mouse) | 713 | FASTA |
| CL0046 | digestive tract-specific calpain | Homo sapiens (human) | 690 | FASTA |
| CL0047 | calpamodulin [Homo sapiens] | Homo sapiens (human) | 641 | FASTA |
| CL0048 | 80kDa m-calpain subunit [Mus musculus] | Mus musculus (house mouse) | 700 | FASTA |
| CL0049 | small optic lobes protein [Drosophila melanogaster] | Drosophila melanogaster (fruit fly) | 1597 | FASTA |
| CL0050 | skeletal muscle specific calpain | Sus scrofa (pig) | 821 | FASTA |
