All UniProtKB/Swiss-Prot entries corresponding to class 3.4.21.-.
The following ENZYME entries belong to class 3.4.21.-:
3.4.21.1 Chymotrypsin 3.4.21.2 Chymotrypsin C 3.4.21.3 Metridin 3.4.21.4 Trypsin 3.4.21.5 Thrombin 3.4.21.6 Coagulation factor Xa 3.4.21.7 Plasmin 3.4.21.8 Transferred entry: 3.4.21.34 and 3.4.21.35 3.4.21.9 Enteropeptidase 3.4.21.10 Acrosin 3.4.21.11 Transferred entry: 3.4.21.36 and 3.4.21.37 3.4.21.12 Alpha-lytic endopeptidase 3.4.21.13 Transferred entry: 3.4.16.5 and 3.4.16.6 3.4.21.14 Transferred entry: 3.4.21.62, 3.4.21.63, 3.4.21.64, 3.4.21.65 and 3.4.21.67 3.4.21.15 Transferred entry: 3.4.21.63 3.4.21.16 Deleted entry 3.4.21.17 Deleted entry 3.4.21.18 Deleted entry 3.4.21.19 Glutamyl endopeptidase 3.4.21.20 Cathepsin G 3.4.21.21 Coagulation factor VIIa 3.4.21.22 Coagulation factor IXa 3.4.21.23 Deleted entry 3.4.21.24 Deleted entry 3.4.21.25 Cucumisin 3.4.21.26 Prolyl oligopeptidase 3.4.21.27 Coagulation factor XIa 3.4.21.28 Transferred entry: 3.4.21.74 3.4.21.29 Transferred entry: 3.4.21.74 3.4.21.30 Transferred entry: 3.4.21.74 3.4.21.31 Transferred entry: 3.4.21.68 and 3.4.21.73 3.4.21.32 Brachyurin 3.4.21.33 Deleted entry 3.4.21.34 Plasma kallikrein 3.4.21.35 Tissue kallikrein 3.4.21.36 Pancreatic elastase 3.4.21.37 Leukocyte elastase 3.4.21.38 Coagulation factor XIIa 3.4.21.39 Chymase 3.4.21.40 Deleted entry 3.4.21.41 Complement subcomponent C1r 3.4.21.42 Complement subcomponent C1s 3.4.21.43 Classical-complement-pathway C3/C5 convertase 3.4.21.44 Transferred entry: 3.4.21.43 3.4.21.45 Complement factor I 3.4.21.46 Complement factor D 3.4.21.47 Alternative-complement-pathway C3/C5 convertase 3.4.21.48 Cerevisin 3.4.21.49 Hypodermin C 3.4.21.50 Lysyl endopeptidase 3.4.21.51 Deleted entry 3.4.21.52 Deleted entry 3.4.21.53 Endopeptidase La 3.4.21.54 Gamma-renin 3.4.21.55 Venombin AB 3.4.21.56 Deleted entry 3.4.21.57 Leucyl endopeptidase 3.4.21.58 Deleted entry 3.4.21.59 Tryptase 3.4.21.60 Scutelarin 3.4.21.61 Kexin 3.4.21.62 Subtilisin 3.4.21.63 Oryzin 3.4.21.64 Peptidase K 3.4.21.65 Thermomycolin 3.4.21.66 Thermitase 3.4.21.67 Endopeptidase So 3.4.21.68 T-plasminogen activator 3.4.21.69 Protein C (activated) 3.4.21.70 Pancreatic endopeptidase E 3.4.21.71 Pancreatic elastase II 3.4.21.72 IgA-specific serine endopeptidase 3.4.21.73 U-plasminogen activator 3.4.21.74 Venombin A 3.4.21.75 Furin 3.4.21.76 Myeloblastin 3.4.21.77 Semenogelase 3.4.21.78 Granzyme A 3.4.21.79 Granzyme B 3.4.21.80 Streptogrisin A 3.4.21.81 Streptogrisin B 3.4.21.82 Glutamyl endopeptidase II 3.4.21.83 Oligopeptidase B 3.4.21.84 Limulus clotting factor C 3.4.21.85 Limulus clotting factor B 3.4.21.86 Limulus clotting enzyme 3.4.21.87 Transferred entry: 3.4.23.49 3.4.21.88 Repressor LexA 3.4.21.89 Signal peptidase I 3.4.21.90 Togavirin 3.4.21.91 Flavivirin 3.4.21.92 Endopeptidase Clp 3.4.21.93 Proprotein convertase 1 3.4.21.94 Proprotein convertase 2 3.4.21.95 Snake venom factor V activator 3.4.21.96 Lactocepin 3.4.21.97 Assemblin 3.4.21.98 Hepacivirin 3.4.21.99 Spermosin 3.4.21.100 Sedolisin 3.4.21.101 Xanthomonalisin 3.4.21.102 C-terminal processing peptidase 3.4.21.103 Physarolisin 3.4.21.104 Mannan-binding lectin-associated serine protease-2 3.4.21.105 Rhomboid protease 3.4.21.106 Hepsin 3.4.21.107 Peptidase Do 3.4.21.108 HtrA2 peptidase 3.4.21.109 Matriptase 3.4.21.110 C5a peptidase 3.4.21.111 Aqualysin 1 3.4.21.112 Site-1 protease 3.4.21.113 Pestivirus NS3 polyprotein peptidase 3.4.21.114 Equine arterivirus serine peptidase 3.4.21.115 Infectious pancreatic necrosis birnavirus Vp4 peptidase 3.4.21.116 SpoIVB peptidase 3.4.21.117 Stratum corneum chymotryptic enzyme 3.4.21.118 Kallikrein 8 3.4.21.119 Kallikrein 13 3.4.21.120 Oviductin 3.4.21.121 Lys-Lys/Arg-Xaa endopeptidase