Pronase

Pronase is a commercially available mixture of proteases isolated from the extracellular fluid of Streptomyces griseus. Activity extends to both denatured and native proteins leading to complete or nearly complete digestion into individual amino acids.

One site that it cleaves at is the inactivation gate of Na+ voltage gated ion channels in neurons.

Pronase is under investigation as a way to improve image quality in gastroscopy by thinning the mucus in advance.[1]

References

Teh, Jun-Liang; Shabbir, Asim; Yuen, Soon; So, Jimmy Bok-Yan (2020). "Recent advances in diagnostic upper endoscopy". World Journal of Gastroenterology. 26 (4): 433–447. doi:10.3748/wjg.v26.i4.433. PMC 7002908. PMID 32063692.

Pronase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

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Proteases: metalloendopeptidases (EC 3.4.24)
ADAM proteins	Alpha secretases ADAM9 ADAM10 ADAM17 ADAM19 ADAM2 ADAM7 ADAM8 ADAM11 ADAM12 ADAM15 ADAM18 ADAM22 ADAM23 ADAM28 ADAM33 ADAMTS1 ADAMTS2 ADAMTS3 ADAMTS4 ADAMTS5 ADAMTS8 ADAMTS9 ADAMTS10 ADAMTS12 ADAMTS13
Matrix metalloproteinases	Collagenases MMP1 MMP8 Gelatinases MMP2 MMP9 MMP3 MMP7 MMP10 MMP11 MMP12 MMP13 MMP14 MMP15 MMP16 MMP17 MMP19 MMP20 MMP21 MMP23A MMP23B MMP24 MMP25 MMP26 MMP27 MMP28
Other	Neprilysin Procollagen peptidase Thermolysin Pregnancy-associated plasma protein A Bone morphogenetic protein 1 Lysostaphin Insulin-degrading enzyme ZMPSTE24

Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Coenzyme 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)