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Proteases are enzymes that catalyze the hydrolysis (breakdown) of proteins into smaller peptide fragments or amino acids, playing crucial roles in digestion, immune response, and protein regulation.
Found in all living organisms, they are vital for processes like blood clotting and cell death, and are used in supplements for digestion and as industrial catalysts.
Proteases belong to the group of hydrolases and exist as acid, neutral, and alkaline proteases.
CAS: 9001-92-7
MF: NULL
MW: 0
EINECS: 232-990-7
Synonyms
Proteinase Type XXⅢ;Fungal Acid Protease;Neutral Protease NB High Active Grade froM ClostridiuM histolyticuM purified;Neutral Protease froM Bacillus polyMyxa(Purified);Nonspecific neutral protease;endoproteinase asp-N from pseudomonas*fragi (muta;Endoproteinase Asp-N, ExcisionGrade, Pseudomonas fragi;Peptidase Rhizopus oryzae
A protease (also called a peptidase, proteinase, or proteolytic enzyme) is an enzyme that catalyzes proteolysis, breaking down proteins into smaller polypeptides or single amino acids, and spurring the formation of new protein products.
They do this by cleaving the peptide bonds within proteins by hydrolysis, a reaction where water breaks bonds.
Proteases are involved in numerous biological pathways, including digestion of ingested proteins, protein catabolism (breakdown of old proteins), and cell signaling.
In the absence of functional accelerants, proteolysis would be very slow, taking hundreds of years.
Proteases can be found in all forms of life and viruses.
They have independently evolved multiple times, and different classes of protease can perform the same reaction by completely different catalytic mechanisms.
Proteases (also sometimes referred to as proteolytic enzymes or peptidases) are in use, or have been proposed or tried, for a number of purposes related to medicine or surgery.
Some preparations involving protease have undergone successful clinical trials and have regulatory authorization; and some further ones have shown apparently useful effects in experimental medical studies.
Proteases have also been used by proponents of alternative therapies, or identified in materials of traditional or folk medicine.
A serine protease of human origin, activated protein C, was produced in recombinant form and marketed as Drotrecogin alfa (also known as Xigris (TM)) and licensed for intensive-care treatment of severe sepsis.
Protease was voluntarily withdrawn by the manufacturer in 2011 after being shown to be ineffective.
Some of these uses rely directly on the proteolytic activity: others rely on observations of anti-inflammatory activity.
Proteases, also known as proteolytic enzymes or proteinases, are a broad group of enzymes that play a crucial role in numerous biological processes by breaking down proteins.
They achieve this by cleaving the peptide bonds between amino acids, a process that is essential for various functions such as digestion, cell signaling, regulation of the cell cycle, and the immune response.
Proteases are highly specific in their action, targeting proteins for cleavage at specific sites, which allows for precise regulation of protein function and turnover in living organisms.
They are found across all domains of life, highlighting their fundamental importance in both health and disease.
Protease Chemical Properties
storage temp.: 2-8°C
solubility: H2O: 5-20 mg/mL
form: powder
color: white
biological source: Streptomyces griseus
Water Solubility: water: soluble 10-20g/L
Specific Activity: ≥5units/mg solid
Cosmetics Ingredients Functions: SKIN CONDITIONING
EPA Substance Registry System: Proteinase (9001-92-7)
Nearly white to light brownish yellow amorphous powder or liquid.
Soluble in water, aqueous solutions are generally pale yellow.
Almost insoluble in ethanol, chloroform and ether.
The main function is to hydrolyze proteins into low molecular peptones, ureas, peptides and amino acids.
Natural products exist in animals, plants and microorganisms, etc., industrial applications to molds produce the main.
Produced by Aspergillus oryzae at pH 6.0, the optimal temperature is 45-50 ℃.
Those produced by Aspergillus niger (Asp. niger 3350) and Bacillus cereus (B. cereus) are also known as Acid-Resistant Protease (Acid-ResistantProteinase), with an optimum pH of 2.5 and an optimum temperature of 45℃.
Protease is strongly activated by copper or manganese ions at a concentration of 2×10-3mol, and inhibited by silver and mercury ions.
Uses
Protease is an enzyme used to break down proteins by hydrolyzing peptide bonds.
Protease is used to degrade proteins, to study protease inhibitors and to study thermal inactivation kinetics.
Protease is from bovine pancreas.
Protease from bovine pancrease (type I) has been used for the extraction of hemicellulose.
Protease is an enzyme used to break down proteins by hydrolyzing peptide bonds.
Protease is used to degrade proteins, to study proteinase inhibitors and to study thermal inactivation kinetics.
Protease is used in nucleic acid isolation procedures in incubations.
Protease is used to study proteinase-activated receptors, such as the transducers of proteinase-mediated signaling in inflammation and the immune response.
Product P4032 is from Aspergillus melleus and has been used to non-specifically degraded xylanase from Streptomyces halstedii.
Protease from Rhizopus spp.
Has been used in a study to assess the amino acid sequences near the amino termini using automated Edman degradation.
Protease has also been used in a study to investigate inactivation of the enzyme by reaction with diazoacetyl-DL-norleucine methyl ester in the presence of cupric acetate.
The field of protease research is enormous.
Since 2004, approximately 8000 papers related to this field were published each year.
Proteases are used in industry, medicine and as a basic biological research tool.
Digestive proteases are part of many laundry detergents and are also used extensively in the bread industry in bread improver.
A variety of proteases are used medically both for their native function (e.g. controlling blood clotting) or for completely artificial functions (e.g. for the targeted degradation of pathogenic proteins).
Highly specific proteases such as TEV protease and thrombin are commonly used to cleave fusion proteins and affinity tags in a controlled fashion.
Protease-containing plant-solutions called vegetarian rennet have been in use for hundreds of years in Europe and the Middle East for making kosher and halal cheeses.
Vegetarian rennet from Withania coagulans has been in use for thousands of years as a Ayurvedic remedy for digestion and diabetes in the Indian subcontinent.
Protease is also used to make Paneer.
Medical and surgical applications
Treatment of blood clots in ischemic stroke
Tissue plasminogen activator (TPA) is a serine protease occurring in animals including humans.
Human-identical TPA (produced industrially by genetically recombinant microorganisms) has an established medical use in the treatment of ischemic stroke: by its proteolytic activity it enables the action of another enzyme (plasmin), which breaks down the protein (fibrin) of blood clots.
Venombin A from snake venom were used in stokes to deplete fibrinogen by forming very weak clots that can be easily dissolved.
Available evidence does not support any benefit in such usage.
Wound debridement
Debridement involves the removal of dead or damaged tissue from wounds in order to assist healing. Much of the debris to be removed is proteinaceous, and proteolytic enzymes have been applied to this purpose.
Papain is a protease obtained from the latex of the fruit of the papaya tree.
Protease has been used (without regulation) for wound debridement for many years, but in the US in 2008 it was brought under regulation[broken anchor] by the U.S. Food and Drug Administration and removed from sale for this purpose, following reports of adverse effects.
On the other hand, recent research has been exploring new ways of administering papain for wound debridement.
Papain as well as other proteases, including bromelain, collagenase, trypsin and thermolysin, have also been tried or used according to other reports on the use of proteases for debridement of wounds and burns without damaging healthy tissue.
Maggot therapy for wound debridement is a traditional therapy which was in recent years approved by the FDA.
Protease has been identified that the maggots produce proteolytic enzymes which take part in the debridement process.
Applications of proteases auxiliary to antibiotic therapy
Some pathogenic bacteria produce biofilms or exudates containing protein, which in some degree help the bacteria adhere to host tissue, or in some degree physically shield the bacteria or hinder the penetration of substances such as antibiotics administered with the intent that they contact the bacteria.
Accordingly, proteolytic enzymes have been tried in conjunction with antibiotics.
Thus, Protease has been reported that Serratia sp. E-15 protease (also known as serratiopeptidase; P07268) was effective for eradicating infection caused by biofilm-forming bacteria in an experimental animal model (which involved carrying out experimental limb surgery on rats, at the same time experimentally introducing Staphylococcus infection).
The authors considered that "The antibiofilm property of the enzyme may enhance antibiotic efficacy in the treatment of staphylococcal infections."
The same enzyme, when used concomitantly with an antibiotic, was also reported to increase antibiotic concentration at a target site.
Applications of protease for enzyme therapy
Protease is also capable of medical applications.
Protease is one of the enzymes in Sollpura (Liprotamase), a pancreatic enzyme replacement therapy (PERT).
Protease assists in the breakdown of proteins into amino acids and polypeptides.
Biochem/physiol Actions
Proteases catabolize proteins by hydrolysis of peptide bonds.
They have many applications such as in detergents, bioremediation processes, pharmaceutical industry, and food industries.
Proteases are associated with nitrogen mineralization in the soil.
They also serve as a supplement in swine and poultry diets.
