Gingipain

Protein family

Gingipains are a family of proteases secreted by Porphyromonas gingivalis. Among other functions, it works to degrade cytokines, thereby downregulating the host response in the form of reduced inflammation.^[1] Gingipain has been studied for its potential role in the development of Alzheimer's disease.^[2]^[3]

References

^ Stathopoulou, PG. Epithelial cell pro-inflammatory cytokine response differs across dental plaque bacterial species. J Clin Perio 2010;37:24–29
^ Dominy, S.S., Lynch, C., Ermini, F., Benedyk, M., Marczyk, A., Konradi, A., Nguyen, M., Haditsch, U., Raha, D., Griffin, C. and Holsinger, L.J., 2019. Porphyromonas gingivalis in Alzheimer’s disease brains: Evidence for disease causation and treatment with small-molecule inhibitors. Science Advances, 5(1), p.eaau3333.
^ New Scientist 29 January 2019

Hydrolase: proteases (EC 3.4)

3.4.11-19: Exopeptidase

3.4.11	Aminopeptidase Alanine Arginyl Aspartyl Cystinyl Leucyl Glutamyl Methionyl 1 2 O
3.4.13	Dipeptidase 1 2 3
3.4.14	Dipeptidyl peptidase Cathepsin C Dipeptidyl peptidase-4 Tripeptidyl peptidase Tripeptidyl peptidase I Tripeptidyl peptidase II
3.4.15	Angiotensin-converting enzyme
3.4.16	Serine type carboxypeptidases: Cathepsin A DD-transpeptidase
3.4.17	Metalloexopeptidases Carboxypeptidase A A2 B C E Glutamate II
Other/ungrouped	Metalloexopeptidase

3.4.21-25: Endopeptidase

Other/ungrouped: Amyloid precursor protein secretase

3.4.99: Unknown

Staphylokinase

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)