| Class d: Alpha and beta proteins (a+b) [53931] (286 folds) |
| Fold d.3: Cysteine proteinases [54000] (1 superfamily) consists of one alpha-helix and 4 strands of antiparallel beta-sheet and contains the catalytic triad Cys-His-Asn |
Superfamily d.3.1: Cysteine proteinases [54001] (12 families) ![]() the constitute families differ by insertion into and circular permutation of the common catalytic core made of one alpha-helix and 3-strands of beta-sheet |
| Family d.3.1.1: Papain-like [54002] (23 proteins) |
| (Pro)cathepsin B [54022] (3 species) |
| Species Cow (Bos taurus) [TaxId:9913] [54025] (3 PDB entries) |
| Species Human (Homo sapiens) [TaxId:9606] [54023] (6 PDB entries) |
| Species Rat (Rattus norvegicus) [TaxId:10116] [54024] (4 PDB entries) |
| (Pro)cathepsin K [54028] (1 species) |
| Species Human (Homo sapiens) [TaxId:9606] [54029] (17 PDB entries) |
| (Pro)cathepsin L [54026] (1 species) |
| Species Human (Homo sapiens) [TaxId:9606] [54027] (4 PDB entries) |
| (Pro)cathepsin S [82566] (1 species) |
| Species Human (Homo sapiens) [TaxId:9606] [82567] (4 PDB entries) |
| (Pro)cathepsin V [64202] (1 species) |
| Species Human (Homo sapiens) [TaxId:9606] [64203] (1 PDB entry) |
| (Pro)cathepsin X [54031] (1 species) |
| Species Human (Homo sapiens) [TaxId:9606] [54032] (2 PDB entries) |
| Actinidin [54003] (1 species) |
| Species Chinese gooseberry or kiwifruit (Actinidia chinensis) [TaxId:3625] [54004] (2 PDB entries) |
| Bleomycin hydrolase [54017] (2 species) DNA-binding protease that has more insertions in the papain-like fold |
| Species Baker's yeast (Saccharomyces cerevisiae), Gal6 [TaxId:4932] [54018] (3 PDB entries) |
| Species Human (Homo sapiens) [TaxId:9606] [54019] (2 PDB entries) |
| Caricain (protease omega) [54007] (1 species) |
| Species Papaya (Carica papaya) [TaxId:3649] [54008] (3 PDB entries) |
| Cathepsin C (dipeptidyl peptidase I), catalytic domain [75330] (2 species) |
| Species Human (Homo sapiens) [TaxId:9606] [75331] (1 PDB entry) |
| Species Rat (Rattus norvegicus) [TaxId:10116] [82565] (1 PDB entry) |
| Cathepsin F [89805] (1 species) |
| Species Human (Homo sapiens) [TaxId:9606] [89806] (1 PDB entry) |
| Cathepsin H [81637] (1 species) also contains a disulfide-bound minicathepsin H chain |
| Species Pig (Sus scrofa) [TaxId:9823] [81636] (3 PDB entries) |
| Chymopapain [54009] (1 species) |
| Species Papaya (Carica papaya) [TaxId:3649] [54010] (1 PDB entry) |
| Cruzain [54020] (1 species) |
| Species Trypanosoma cruzi [TaxId:5693] [54021] (12 PDB entries) |
| Ervatamin B [89803] (1 species) |
| Species Adam's apple (Ervatamia coronaria) [TaxId:52861] [89804] (1 PDB entry) |
| Ervatamin C [102717] (1 species) |
| Species East indian rosebay (Ervatamia coronaria) [TaxId:52861] [102718] (1 PDB entry) |
| Glycyl endopeptidase [54011] (1 species) |
| Species Papaya (Carica papaya) [TaxId:3649] [54012] (1 PDB entry) |
| Papain [54005] (1 species) |
| Species Papaya (Carica papaya) [TaxId:3649] [54006] (18 PDB entries) |
| Proline-specific cysteine protease [54013] (1 species) |
| Species Ginger rhizome (Zingiber officinale) [TaxId:94328] [54014] (1 PDB entry) |
| Staphopain SspB [102721] (1 species) |
| Species Staphylococcus aureus [TaxId:1280] [102722] (2 PDB entries) |
| Staphopain StpA [54033] (1 species) |
| Species Staphylococcus aureus [TaxId:1280] [54034] (1 PDB entry) |
| Streptococcal pyrogenic exotoxin B [54035] (1 species) |
| Species Streptococcus pyogenes [TaxId:1314] [54036] (2 PDB entries) |
| Vignain (bean endopeptidase) [102719] (1 species) |
| Species Castor bean (Ricinus communis) [TaxId:3988] [102720] (1 PDB entry) |
Timeline for Family d.3.1.1: Papain-like: