Enzyme Collection (page 2)

Yeast enzyme, molecular model F007 / 9887
Yeast enzyme. Molecular model of an enzyme from bakers yeast (Saccharomyces cerevisiae). This is the 20S proteasome. A proteasome is a complex type of proteinase (protein-digesting enzyme)

SEM of biological washing powder H130 / 0217
Washing powder. Coloured Scanning Electron micrograph (SEM) of granules of biological washing powder. Some of the granules are partially opened

HIV-1 protease molecule
HIV-1 protease, molecular model. This enzyme, from HIV (human immunodeficiency virus), cleaves viral polyproteins into functional proteins that are essential for viral assembly and infectivity

Tyrosyl-tRNA synthetase molecule
Tyrosyl-tRNA synthetase protein molecule. Molecular model showing bacterial tyrosyl-tRNA synthetase complexed with tyrosyl tRNA (transfer ribonucleic acid)

Endonuclease IV molecule. Molecular model of the endonuclease IV restriction enzyme EcoRV (grey) bound to a cleaved section of DNA (deoxyribonucleic acid, blue, orange and pink)

ATP synthase molecule C014 / 0880
ATP synthase molecule. Molecular model showing the structure of ATP synthase (ATPase) subunit C. ATPase is an important enzyme that provides energy for cells through the synthesis of adenosine

HIV enzyme protein, molecular model C014 / 0876
HIV enzyme protein. Computer model showing the structure of the catalytic domain of a molecule of HIV-1 retroviral integrase (IN) from the human immunodeficiency virus (HIV)

Tryptophanyl-tRNA synthetase molecule
Tryptophanyl-tRNA synthetase protein molecule. Molecular model showing human tryptophanyl-tRNA synthetase complexed with tryptophan tRNA (transfer ribonucleic acid)

EcoRV restriction enzyme molecule C014 / 2117
EcoRV restriction enzyme. Molecular model of the type II restriction enzyme EcoRV (purple and blue) bound to a DNA molecule (deoxyribonucleic acid, pink and white)

HIV enzyme protein, molecular model
HIV enzyme protein. Computer model showing the structure of the catalytic domain of a molecule of HIV-1 retroviral integrase (IN) from the human immunodeficiency virus (HIV)

EcoRV restriction enzyme molecule C014 / 2112
EcoRV restriction enzyme. Molecular model of the type II restriction enzyme EcoRV (pink) bound to a cleaved section of DNA (deoxyribonucleic acid, yellow)

DNA repair, artwork
DNA repair. Computer artwork of a DNA (deoxyribonucleic acid) ligase enzyme (yellow) repairing damaged DNA (spiral) in a chromosome (upper left)

Ricin A-chain, artwork C017 / 3654
Ricin A-chain. Computer artwork showing the enzymatically active A-chain from a molecule of the toxic protein ricin. Ricin comprises two entwined amino acid chains; A (seen here) and B (not shown)

EcoRV restriction enzyme molecule C014 / 2114
EcoRV restriction enzyme. Molecular model of the type II restriction enzyme EcoRV (white and gold) bound to a cleaved section of DNA (deoxyribonucleic acid, orange and yellow)

EcoRV restriction enzyme molecule C014 / 2116
EcoRV restriction enzyme. Molecular model of the type II restriction enzyme EcoRV (purple and blue) bound to a DNA molecule (deoxyribonucleic acid, pink and white)

Ricin molecule, artwork C017 / 3649
Ricin molecule. Computer artwork showing the structure of a molecule of the toxic protein ricin. Ricin comprises two entwined amino acid chains; A (yellow) and B (blue)

Nepenthes: tropical pitcher plant
The insectivorous nepenthes plants are epiphitic plants that grow on the branches of trees common in Australia, the Phillipines and Malaysia

EcoRV restriction enzyme molecule C014 / 2115
EcoRV restriction enzyme. Molecular model of the type II restriction enzyme EcoRV (purple and blue) bound to a DNA molecule (deoxyribonucleic acid, pink and white)

Rubisco enzyme molecule F006 / 9776
Rubisco. Molecular model of the enzyme rubisco (ribulose bisphosphate carboxylase oxygenase) complexed with 2-carboxyarabinitol biphosphate

Rubisco enzyme molecule F006 / 9779
Rubisco. Molecular model of the enzyme rubisco (ribulose bisphosphate carboxylase oxygenase) complexed with ribulose-1, 5-biphosphate

NADP-dependent isocitrate dehydrogenase F006 / 9778
NADP-dependent isocitrate dehydrogenase, molecular model. This enzyme catalyses the third step in the citric acid (or Krebs) cycle, the process by which mitochondria convert glucose to energy

Catalase, molecular model F006 / 9774
Catalase. Molecular model of catalase from a cow liver. This enzyme to water and oxygen. Hydrogen peroxide is a highly toxic byproduct of a number of normal cellular processes

Glycogen phosphorylase molecule F006 / 9775
Glycogen phosphorylase. Molecular model of glycogen phosphorylase bound to AMP (adenosine monophosphate). This is an enzyme involved in breaking down glycogen

Triose phosphate isomerase molecule F006 / 9777
Triose phosphate isomerase (TPI), molecular model. TPI is essential for glycolysis and catalyses the reversible interconversion of dihydroxyacetone phosphate and glyceraldehyde-3-phosphate

Metabolic enzyme molecule F006 / 9770
Metabolic enzyme. Molecular model of the enzyme aconitase with isocitrate bound. Aconitase is involved in the citric acid (or Krebs) cycle

Dihydrofolate reductase molecule F006 / 9772
Dihydrofolate reductase, molecular model. This enzyme converts the vitamin folic acid into a coenzyme

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)

Ribonuclease A molecule F006 / 9768
Ribonuclease A (RNAse A), molecular model. Ribonuclease (RNase) is a type of nuclease that catalyses the degradation of RNA (ribonucleic acid)

Pepsin stomach enzyme F006 / 9767
Pepsin stomach enzyme, molecular model. Pepsin is a protease enzyme that is secreted as part of gastric juice into the stomach in an inactive form known as pepsinogen

Xylose isomerase complex F006 / 9765
Xylose isomerase complex. Molecular model of the enzyme D-xylose isomerase bound to the sugar alcohol sorbitol. D-xylose isomerase is involved in fructose and mannose metabolism

Phosphofructokinase bacterial enzyme F006 / 9762
Phosphofructokinase enzyme, molecular model. This enzyme, from the bacterium Bacillus stearothermophilus, is involved in regulating the process of releasing energy from glucose

Methionine aminopeptidase molecule F006 / 9756
Methionine aminopeptidase, molecular model. This enzyme removes the amino acid methionine from proteins

Flu virus surface protein and drug F006 / 9745
Flu virus surface protein and drug. Molecular model of the neuraminidase glycoprotein enzyme from on the surface of the influenza A (flu) virus bound to the drug zanamivir

Human lysine-specific demethylase F006 / 9747
Human lysine-specific demethylase, molecular model. This enzyme removes methyl groups from lysine residues in histones (proteins that package DNA)

Beta-lactamase molecule F006 / 9746
Beta-lactamase enzyme, molecular model. This bacterial protein provides resistance to beta-lactam antibiotics, which include penicillin

Human muscle aldolase, molecular model F006 / 9742
Human muscle aldolase. Molecular model of the enzyme human muscle aldolase complexed with its substrate fructose 1, 6-bisphosphate

GMP synthetase enzyme F006 / 9734
GMP synthetase enzyme, molecular model. This enzyme, guanine monophosphate synthetase, catalyses the reaction that converts xanthosine monophosphate to guanosine monophosphate

Parathion hydrolase enzyme F006 / 9731
Parathion hydrolase, molecular model. This enzyme hydrolyses bonds in organophosphates, which include pesticides and the nerve gas sarin

Iron-regulatory protein bound to RNA F006 / 9727
Iron-regulatory protein bound to RNA, molecular model. Iron regulatory protein 1 (IRP1, purple) bound to a short strand of RNA (ribonucleic acid, red) that includes iron-responsive elements (IREs)

DNA repair enzyme, molecular model F006 / 9726
DNA repair enzyme. Molecular model of the DNA (deoxyribonucleic acid) repair enzyme alpha-ketoglutarate-dependent dioxygenase bound to a molecule of DNA (red and blue)

Oxidoreductase enzyme complex F006 / 9725
Oxidoreductase enzyme complex, molecular model. This is the membrane-bound domain formed from of a complex of NADH-quinone oxidoreductase subunits

Aldo-keto reductase enzyme and ibuprofen F006 / 9724
Aldo-keto reductase enzyme and ibuprofen. Molecular model of the enzyme aldo-keto reductase family 1 member C3 (AKR1C3) bound to a molecule of the anti-inflammatory drug ibuprofen

Methyltransferase complexed with DNA F006 / 9711
Methyltransferase complexed with DNA, molecular model. The strand of DNA (deoxyribonucleic acid, red and blue) is enclosed by DNA methyltransferase 1 (DNMT-1, beige)

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

Glycosylation enzyme molecule F006 / 9708
Glycosylation enzyme. Molecular model of the enzyme N-acetylglucosamine (GlcNAc) transferase. This intracellular enzyme adds N-acetylglucosamine molecules to target proteins

Retroviral intasome molecule F006 / 9705
Retroviral intasome molecule. Molecular model of an intasome from a retrovirus complexed with host cell DNA (deoxyribonucleic acid)

Retroviral intasome molecule F006 / 9706
Retroviral intasome molecule. Molecular model of an intasome from a retrovirus complexed with host cell DNA (deoxyribonucleic acid)

NpmA methyltransferase F006 / 9707
NpmA methyltransferase, molecular model. Methyltransferase enzymes act to add methyl groups to nucleic acids such as DNA (deoxyribonucleic acid), a process called DNA methylation

All Professionally Made to Order for Quick Shipping

Enzymes: The Molecular Architects of Life DNA transcription, molecular model: they are the key players in the intricate process of DNA transcription, where they faithfully transcribe genetic information into RNA molecules. Metabolic enzyme, artwork: Metabolic enzymes act as catalysts in various biochemical reactions within our bodies, ensuring efficient metabolism and energy production. HIV reverse transcription enzyme: This remarkable enzyme allows the human immunodeficiency virus (HIV) to convert its RNA genome into DNA, enabling it to integrate with our own genetic material. Hepatitis C virus enzyme, molecular model: Understanding the structure and function of hepatitis C virus enzymes is crucial for developing effective treatments against this persistent viral infection. Anatomy of Organs Engraving: Enzymes play a vital role in maintaining organ health by facilitating essential processes like digestion, respiration, and hormone regulation throughout our body's intricate anatomy. Manganese superoxide dismutase enzyme F006 / 9423: This antioxidant enzyme protects cells from harmful free radicals by converting them into less damaging substances—a guardian against oxidative stress. Cytochrome b5 molecule C015 / 6696: As an electron carrier protein found in cell membranes, cytochrome b5 assists other enzymes in performing critical metabolic reactions involved in energy production and lipid metabolism. Glutamine synthetase enzyme: Essential for nitrogen metabolism, glutamine synthetase ensures that ammonia produced during cellular processes is safely converted into non-toxic compounds like amino acids or urea. RNA-editing enzyme, molecular model: These specialized enzymes modify RNA molecules after their synthesis—fine-tuning gene expression patterns and expanding the diversity of proteins encoded by our genes. ATPase molecule: ATPases are indispensable for cellular energy transfer; these enzymes hydrolyze adenosine triphosphate (ATP), releasing stored energy to power various cellular processes.