Structural Classification of Proteins

Fold: Trypsin-like serine proteases

: barrel, closed; n=6, S=8; greek-key
duplication: consists of two domains of the same fold

Lineage:

Root: scop
Class: All beta proteins [48724]
Fold: Trypsin-like serine proteases [50493]
barrel, closed; n=6, S=8; greek-key
duplication: consists of two domains of the same fold

Superfamilies:

Trypsin-like serine proteases [50494] (4)
uperfamily
1. Prokaryotic proteases [50495] (16)
  1. Achromobacter protease [50496]
    1. Achromobacter lyticus, strain m497-1 [TaxId: 224] [50497] (2)
  2. alpha-Lytic protease [50498]
    1. Lysobacter enzymogenes, 495 [TaxId: 69] [50499] (41)
  3. Protease A [50500]
    1. Streptomyces griseus, strain k1 [TaxId: 1911] [50501] (5)
  4. Glutamic acid-specific protease [50502]
    1. Streptomyces griseus [TaxId: 1911] [50503] (1)
  5. Trypsin [50504]
    1. Streptomyces griseus, strain k1 [TaxId: 1911] [50505] (3)
  6. Serine proteinase [50506]
    1. Streptomyces fradiae [TaxId: 1906] [50507] (1)
  7. Protease B [50508]
    1. Streptomyces griseus, strain k1 [TaxId: 1911] [50509] (29)
      Streptogrisin B
  8. Epidermolytic (exfoliative) toxin A [50510]
    probable glutamic acid-specific protease
    1. Staphylococcus aureus [TaxId: 1280] [50511] (4)
  9. Exfoliative toxin B [50512]
    1. Staphylococcus aureus [TaxId: 1280] [50513] (2)
  10. V8 protease [101809]
    glutamic acid-specific protease
    1. Staphylococcus aureus [TaxId: 1280] [101810] (3)
      SQ P04188 69-284
  11. Glutamyl endopeptidase [101811]
    1. Bacillus intermedius [TaxId: 1400] [101812] (2)
  12. Protease Do (DegP, HtrA), catalytic domain [74969]
    1. Escherichia coli [TaxId: 562] [74970] (14)
    2. Thermotoga maritima [TaxId: 2336] [89339] (1)
  13. Mitochondrial serine protease HtrA2, catalytic domain [74971]
    1. Human (Homo sapiens) [TaxId: 9606] [74972] (1)
  14. Stress sensor protease DegS, catalytic domain [110236]
    1. Escherichia coli [TaxId: 562] [110237] (31)
      SQ P31137 37-354 ! SQ P31137
  15. Protease PepD [141383]
    1. Mycobacterium tuberculosis [TaxId: 1773] [141384] (6)
      SQ O53896 154-374
      Rv0983
2. Eukaryotic proteases [50514] (68)
  1. Trypsin(ogen) [50515]
    1. Cow (Bos taurus) [TaxId: 9913] [50516] (282)
      SQ P00760
    2. Pig (Sus scrofa) [TaxId: 9823] [50517] (26)
      SQ P00761 9-231 ! SQ P00761
    3. Rat (Rattus norvegicus) [TaxId: 10116] [50518] (33)
    4. Human (Homo sapiens) [TaxId: 9606] [50519] (1)
    5. Human (Homo sapiens), trypsin IV (brain isoform) [TaxId: 9606] [69283] (1)
    6. North atlantic salmon (Salmo salar) [TaxId: 8030] [50520] (11)
    7. Pacific chum salmon (Oncorhynchus keta) [TaxId: 8018] [82121] (1)
    8. Mold (Fusarium oxysporum) [TaxId: 5507] [50521] (16)
    9. Narrow-clawed crayfish (Pontastacus leptodactylus) [TaxId: 6717] [141385] (1)
      SQ Q52V24 1-237
  2. (alpha,gamma)-chymotrypsin(ogen) [50522]
    1. Cow (Bos taurus) [TaxId: 9913] [50523] (62)
      SQ P00766
    2. Rat (Rattus norvegicus) [TaxId: 10116] [89340] (1)
    3. Red fire ant (Solenopsis invicta) [TaxId: 13686] [50524] (1)
  3. Neuropsin [50525]
    1. Mouse (Mus musculus) [TaxId: 10090] [50526] (1)
  4. Crab collagenase [50527]
    1. Atlantic sand fiddler crab (Uca pugilator) [TaxId: 6772] [50528] (1)
  5. HL collagenase [50529]
    1. Common cattle grub (Hypoderma lineatum) [TaxId: 7389] [50530] (2)
  6. Thrombin [50531]
    1. Human (Homo sapiens) [TaxId: 9606] [50532] (164)
      SQ P00734 331-361,364-421 ! SQ P00734 334-360 364-510 518-619 ! SQ P00734 328-620 ! SQ P00734 355-621 ! SQ P00734 328-620
    2. Cow (Bos taurus) [TaxId: 9913] [50533] (26)
      SQ P00734 333-622
  7. Procarboxypeptidase A-S6 subunit III (zymogen E) [50534]
    1. Cow (Bos taurus) [TaxId: 9913] [50535] (2)
  8. Elastase [50536]
    1. Human (Homo sapiens) [TaxId: 9606] [50537] (7)
    2. Pig (Sus scrofa) [TaxId: 9823] [50538] (94)
    3. Salmon (Salmo salar) [TaxId: 8030] [50539] (1)
    4. Worm (Eisenia fetida) [TaxId: 6396] [74973] (1)
      fibrinolytic enzyme component A
  9. Enteropeptidase (enterokinase light chain) [50540]
    1. Cow (Bos taurus) [TaxId: 9913] [50541] (1)
  10. Urokinase [50542]
    1. Human (Homo sapiens) [TaxId: 9606] [50543] (1)
  11. Heparin binding protein, HBP [50544]
    multifunctional protein (synonym: CAP37, azurocidin)
    1. Human (Homo sapiens) [TaxId: 9606] [50545] (4)
  12. Alpha tryptase I [89341]
    1. Human (Homo sapiens) [TaxId: 9606] [89342] (1)
  13. beta-Tryptase [50546]
    ring-like tetramer with active sites facing a central pore
    1. Human (Homo sapiens) [TaxId: 9606] [50547] (33)
  14. Cathepsin G [50548]
    1. Human (Homo sapiens) [TaxId: 9606] [50549] (4)
  15. Coagulation factor VIIa [50550]
    1. Human (Homo sapiens) [TaxId: 9606] [50551] (35)
      SQ P08709 213-466 ! SQ P08709 213-446
  16. Chymase (mast cell protease I) [89343]
    1. Human (Homo sapiens) [TaxId: 9606] [89344] (1)
  17. Chymase II (mast cell proteinase II) [50552]
    1. Rat (Rattus rattus) [TaxId: 10117] [50553] (1)
    2. Human (Homo sapiens) [TaxId: 9606] [50554] (4)
  18. Kallikrein A [50555]
    1. Pig (Sus scrofa) [TaxId: 9823] [50556] (3)
  19. Kallikrein-13 [50572]
    1. Mouse (Mus musculus) [TaxId: 10090] [50573] (1)
  20. Kallikrein 6 [74974]
    1. Human (Homo sapiens) [TaxId: 9606] [74975] (3)
  21. Tonin [50557]
    1. Rat (Rattus rattus) [TaxId: 10117] [50558] (1)
  22. 7S NGF protease subunits [50559]
    two pairs of homologous but non-identical chains
    1. Mouse (Mus musculus) [TaxId: 10090] [50560] (1)
  23. Prostate specific antigen (PSA kallikrein) [82122]
    1. Horse (Equus caballus) [TaxId: 9796] [82123] (1)
  24. Factor B [50561]
    1. Human (Homo sapiens) [TaxId: 9606] [50562] (4)
      SQ P00751 268-764
  25. Factor D [50563]
    1. Human (Homo sapiens) [TaxId: 9606] [50564] (7)
  26. Two-chain tissue plasminogen activator (TC)-T-PA [50565]
    1. Human (Homo sapiens) [TaxId: 9606] [50566] (2)
  27. Single chain tissue plasminogen activator [50567]
    1. Human (Homo sapiens) [TaxId: 9606] [50568] (1)
    2. Vampire bat (Desmodus rotundus) [TaxId: 9430] [50569] (1)
  28. Venom serine protease [50570]
    1. Chinese green tree viper (Trimeresurus stejnegeri) [TaxId: 39682] [50571] (1)
    2. Hundred-pace snake (Agkistrodon acutus) [TaxId: 36307] [110238] (2)
      SQ Q9I8X1
  29. Coagulation factor IXa, protease domain [50583]
    1. Pig (Sus scrofa) [TaxId: 9823] [50584] (2)
    2. Human (Homo sapiens) [TaxId: 9606] [50585] (1)
  30. Coagulation factor Xa, protease domain [50574]
    1. Human (Homo sapiens) [TaxId: 9606] [50575] (76)
      SQ P00742 235-467
    2. Cow (Bos taurus) [TaxId: 9913] [50576] (1)
  31. Coagulation factor Xa-trypsin chimera [50577]
    1. Synthetic, based on Homo sapiens sequence [50578] (1)
      Xa: residues 16-121; trypsin: residues 122-246
  32. Complement C1S protease, catalytic domain [63789]
    1. Human (Homo sapiens) [TaxId: 9606] [63790] (1)
  33. Complement C1R protease, catalytic domain [74976]
    1. Human (Homo sapiens) [TaxId: 9606] [74977] (5)
  34. Activated protein c (autoprothrombin IIa) [50579]
    1. Human (Homo sapiens) [TaxId: 9606] [50580] (1)
  35. Myeloblastin, PR3 [50581]
    1. Human (Homo sapiens) [TaxId: 9606] [50582] (1)
  36. Urokinase-type plasminogen activator (LMW U-PA), catalytic domain [50586]
    1. Human (Homo sapiens) [TaxId: 9606] [50587] (49)
      SQ P00749 156-178,179-424
  37. Plasmin(ogen), catalytic domain [50588]
    1. Human (Homo sapiens) [TaxId: 9606] [50589] (7)
  38. Granzyme A [89345]
    1. Human (Homo sapiens) [TaxId: 9606] [89346] (2)
  39. Granzyme B [50590]
    1. Rat (Rattus norvegicus) [TaxId: 10116] [50591] (1)
    2. Human (Homo sapiens) [TaxId: 9606] [50592] (2)
  40. Granzyme K [82124]
    1. Human (Homo sapiens) [TaxId: 9606] [82125] (2)
  41. Duodenase [63791]
    new serine protease
    1. Cow (Bos taurus) [TaxId: 9913] [63792] (1)
  42. Beta-acrosin [50593]
    1. Sheep (Ovis aries) [TaxId: 9940] [50594] (1)
    2. Pig (Sus scrofa) [TaxId: 9823] [50595] (1)
  43. Matriptase MTSP1 [69284]
    1. Human (Homo sapiens) [TaxId: 9606] [69285] (4)
  44. Hepsin, catalytic domain [101813]
    1. Human (Homo sapiens) [TaxId: 9606] [101814] (4)
      SQ P05981 163-417
  45. Hepatocyte growth factor, HGF [110239]
    1. Human (Homo sapiens) [TaxId: 9606] [110240] (2)
      SQ P14210 495-728 ! SQ P14210 495-722
  46. Mannan-binding lectin serine protease 2 (MASP-2), catalytic domain [110241]
    1. Human (Homo sapiens) [TaxId: 9606] [110242] (2)
      SQ O00187 366-686
  47. Coagulation factor XI [117237]
    1. Human (Homo sapiens) [TaxId: 9606] [117238] (4)
      SQ P03951 388-624
3. Viral proteases [50596] (9)
  beta sheet in the first domain is opened rather than forms a barrel
  1. Viral capsid protein [50597]
    1. Sindbis virus [TaxId: 11034] [50598] (14)
    2. Semliki forest virus [TaxId: 11033] [50599] (2)
    3. Venezuelan equine encephalitis virus [TaxId: 11036] [89347] (2)
  2. TEV protease (nucleat inclusion protein A, NIA) [82126]
    1. Tobacco etch virus, TEV [TaxId: 12227] [82127] (3)
      SQ P04517 2041-2279
  3. NS3 protease [50600]
    1. Human hepatitis C virus (HCV), different isolates [TaxId: 11103] [50601] (14)
      SQ P27958 1027-1206,1678-1669
      SQ P26662 1029-1202,1677-1689
      SQ O36579 1054-1207
    2. Dengue virus type 2 [TaxId: 11060] [50602] (3)
    3. West nile virus [TaxId: 11082] [141386] (2)
      SQ P06935 1520-1671
    4. Dengue virus [TaxId: 12637] [159188] (2)
  4. NSP4 proteinase [82128]
    minimal fold; contains C-terminal extension
    1. Equine arteritis virus, EAV [TaxId: 11047] [82129] (1)
4. Viral cysteine protease of trypsin fold [50603] (8)
  1. 3C cysteine protease (picornain 3C) [50604]
    1. Human rhinovirus 2 [TaxId: 12130] [50605] (1)
    2. Human hepatitis A virus [TaxId: 208726] [50606] (7)
    3. Human poliovirus 1 Mahoney [TaxId: 12081] [74978] (3)
    4. Foot-and-mouth disease virus FMDV [TaxId: 12110] [159189] (4)
      SQ P49303 1657-1755! SQ P49303 1657-1857
  2. 2A cysteine proteinase [50607]
    1. Human rhinovirus 2 [TaxId: 12130] [50608] (1)
  3. Coronavirus main proteinase (3Cl-pro, putative coronavirus nsp2) [74979]
    contains an extra alpha-helical domain
    1. Transmissible gastroenteritis virus [TaxId: 11149] [74980] (4)
    2. Human coronavirus 229E [TaxId: 11137] [89348] (1)
    3. SARS coronavirus [TaxId: 227859] [89349] (26)