Protease Collection

Conceptual image of enterokinase. Also known as enteropeptidase, it is an enzyme produced by cells of the duodenum and involved in human and animal digestion

HIV-1 protease and inhibitor F006 / 9773
HIV-1 protease and inhibitor. Molecular model of the enzyme HIV-1 protease (pink and blue ribbons) bound to an inhibitor molecule (centre)

Pepsinogen molecule F006 / 9710
Pepsinogen. Molecular model of pepsinogen, the inactive precursor to the digestive enzyme pepsin. Pepsion, which is released by the stomach digests proteins

Trypsin molecule F006 / 9634
Trypsin molecule. Molecular model of the digestive protease enzyme trypsin. Trypsin is released by the pancreas to break down proteins into smaller chains of amino acids

Trypsin molecule with inhibitor F006 / 9633
Trypsin molecule. Molecular model of the digestive protease enzyme beta-trypsin complexed with an inhibitor. Trypsin is released by the pancreas to break down proteins into smaller chains of amino

Rhomboid protease molecule F006 / 9621
Rhomboid protease. Molecular model of the rhomboid protease enzyme GlpG from the bacterium Escherichia coli. Proteases are enzymes that break down proteins

Rhomboid protease molecule F006 / 9607
Rhomboid protease. Molecular model of the rhomboid protease enzyme GlpG from the bacterium Escherichia coli. Proteases are enzymes that break down proteins

Thrombin protein, molecular model F006 / 9603
Thrombin protein, molecular model. Thrombin is an enzyme involved in the blood coagulation (clotting) process. It converts fibrinogen (a soluble plasma glycoprotein synthesised in the liver)

Chymotrypsin digestive enzyme molecule F006 / 9577
Chymotrypsin digestive enzyme, molecular model. Chymotrypsin is a protease, an enzyme that breaks down proteins and peptides. It is secreted into the duodenum (small intestine) by the pancreas

ATP-dependent protease molecule F006 / 9552
ATP-dependent protease. Molecular model of the bacterial enzyme HsIUV protease. Proteases are enzymes that break down proteins. HsIUV is expressed in response to cellular stress

Trypsinogen molecule with inhibitor F006 / 9517
Trypsinogen molecule. Molecular model of trypsinogen, the precursor to the digestive protease enzyme trypsin, complexed with an inhibitor

Bacterial protease molecule F006 / 9340
Bacterial protease molecule. Computer model of a molecule of HsIUV protease complexed with its chaperone protein from a bacterium. Proteases are enzymes that break down proteins

Bacterial protease molecule. Computer model of a molecule of HsIUV protease complexed with its chaperone protein from a bacterium. Proteases are enzymes that break down proteins

Trypsin molecule with inhibitor C015 / 8436
Trypsin molecule. Molecular model of the digestive protease enzyme beta-trypsin (pink) complexed with an inhibitor (blue)

Trypsin molecule with inhibitor C015 / 8379
Trypsin molecule. Molecular model of the digestive protease enzyme beta-trypsin (pink) complexed with an inhibitor (blue)

FP2 malaria protease enzyme complex, molecular model. This complex consists of the falcipain-2 (FP2) protease enzyme (purple, right) bound to a cystatin (orange, left), a form of protease inhibitor

Thrombin protein, molecular model C015 / 7074
Thrombin protein, molecular model. Thrombin is an enzyme involved in the blood coagulation (clotting) process. It converts fibrinogen (a soluble plasma glycoprotein synthesised in the liver)

Caspase 6 enzyme C015 / 5700
Capase 6 enzyme, molecular model. Caspases are proteases, enzymes that cleave proteins and play a role in apoptosis (programmed cell death)

Caspase 6 enzyme C015 / 5699
Capase 6 enzyme, molecular model. Caspases are proteases, enzymes that cleave proteins and play a role in apoptosis (programmed cell death)

Saquinavir AIDS drug molecule
Saquinavir AIDS drug, molecular model. This is a protease inhibitor marketed as Invirase and Fortovase. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white)

Caspase 3 molecule
Caspase-3 molecule. Computer artwork showing the secondary structure of a molecule of caspase-3. Caspase-3 is a protease, an enzyme that cleaves proteins

Caspase 1 molecule
Caspase-1 molecule. Computer artwork showing the secondary structure of a molecule of caspase-1. Caspase-1 is a protease, an enzyme that cleaves proteins

Trypsin molecule, computer artwork
Trypsin molecule. Computer model of a molecule of the digestive enzyme trypsin. Trypsin is a complex protein, released by the pancreas to break down proteins into smaller chains of amino acids

Hepatitis A virus 3C proteinase enzyme
3C proteinase enzyme from hepatitis A virus, molecular model. This proteinase (protein- cleaving) enzyme is produced by the hepatitis A virus

Thrombin protein, secondary structure
Thrombin protein, computer model. Thrombin is a protein involved in the blood coagulation (clotting) process. It converts fibrinogen (a soluble plasma glycoprotein synthesised in the liver)

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Protease: Unveiling the Molecular World of Enzymatic Power In a realm where molecules dance and interact, protease takes center stage as an essential player in countless biological processes. Conceptual images like that of enterokinase provide us with a glimpse into the intricate world of these powerful enzymes. One such example is HIV-1 protease, depicted alongside its inhibitor F006/9773. This image symbolizes the ongoing battle against this devastating virus, highlighting the importance of understanding proteases for developing effective treatments. Pepsinogen molecule F006/9710 showcases how they can be activated to their active form, pepsin, which aids in breaking down proteins during digestion. Similarly, trypsin molecule F006/9634 demonstrates another digestive enzyme's structure and function. The captivating image featuring trypsin molecule with inhibitor F006/9633 reveals how inhibitors can bind to specific sites on proteases to regulate their activity. Such insights hold promise for designing drugs that target proteases involved in various diseases. Rhomboid protease molecules (F006/9621 and F006/9607) captivate our imagination by showcasing their unique shape and mechanism. These enzymes play crucial roles in cellular signaling pathways and are potential targets for therapeutic interventions. Thrombin protein's molecular model (F006/9603) reminds us of its pivotal role in blood clotting regulation. Understanding thrombin's structure allows scientists to develop anticoagulant drugs with precision. Chymotrypsin digestive enzyme molecule (F006/9577) unravels yet another member of the protease family involved in protein digestion. Its distinct structure highlights its ability to cleave peptide bonds selectively. ATP-dependent protease molecule (F006/9552) stands out due to its reliance on ATP energy source for degradation of damaged or misfolded proteins within cells—a critical process maintaining cellular health.