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Enzyme Collection (page 5)

Enzymes: The Molecular Architects of Life DNA transcription, molecular model: they are the key players in the intricate process of DNA transcription

Background imageEnzyme Collection: Archaeon enzyme, molecular model F006 / 9459

Archaeon enzyme, molecular model F006 / 9459
Archaeon enzyme. Molecular model of an enzyme from Thermoplasma acidophilum. This is the 20S proteasome. A proteasome is a complex type of proteinase (protein-digesting enzyme)

Background imageEnzyme Collection: Photosynthetic reaction centre F006 / 9462

Photosynthetic reaction centre F006 / 9462
Photosynthetic reaction centre. Molecular model of the photosynthetic reaction centre from the purple bacterium Rhodopseudomonas viridis

Background imageEnzyme Collection: Amylase, molecular model F006 / 9461

Amylase, molecular model F006 / 9461
Amylase. Molecular model of the enzyme alpha-amylase from the human pancreas. Amylase catalyses the breakdown of starch to sugars, and so starts the digestive process

Background imageEnzyme Collection: GST enzyme conferring DDT resistance F006 / 9460

GST enzyme conferring DDT resistance F006 / 9460
GST enzyme. Molecular model of a glutathione S-transferase (GST) enzyme from the malaria-carrying mosquito Anopheles gambiae

Background imageEnzyme Collection: Caspase-3 and inhibitor F006 / 9457

Caspase-3 and inhibitor F006 / 9457
Apopain protein and inhibitor. Molecular model of caspase-3, also known as apopain, complexed with an inhibitor. Caspase-3 is a protease, an enzyme that cleaves proteins

Background imageEnzyme Collection: Para-hydroxybenzoate hydroxylase molecule F006 / 9458

Para-hydroxybenzoate hydroxylase molecule F006 / 9458
Para-hydroxybenzoate hydroxylase, molecular model. This flavoprotein enzyme is involved in the degradation of aromatic compounds

Background imageEnzyme Collection: Nitric oxide synthase molecule F006 / 9452

Nitric oxide synthase molecule F006 / 9452
Nitric oxide synthase, molecular model. This enzyme catalyses the production of nitric oxide from L-arginine. Nitric oxide is involved in cellular signalling

Background imageEnzyme Collection: Cytochrome c oxidase molecule F006 / 9447

Cytochrome c oxidase molecule F006 / 9447
Cytochrome c oxidase. Molecular model of a cytochrome c oxidase enzyme from the mitochondria of a cows heart. Cytochrome molecules perform oxidation and reduction reactions for electron transport

Background imageEnzyme Collection: ATPase and inhibitor, molecular model F006 / 9448

ATPase and inhibitor, molecular model F006 / 9448
ATPase and inhibitor. Computer model of an ATP synthase (ATPase) molecule from a mitochondrion complexed with its inhibitor protein IF1

Background imageEnzyme Collection: Cytochrome c oxidase molecule F006 / 9446

Cytochrome c oxidase molecule F006 / 9446
Cytochrome c oxidase. Molecular model of a cytochrome c oxidase enzyme from the mitochondria of a cows heart. Cytochrome molecules perform oxidation and reduction reactions for electron transport

Background imageEnzyme Collection: Citrate synthase molecule F006 / 9443

Citrate synthase molecule F006 / 9443
Citrate synthase, molecular model. This enzyme is involved in the first step of the citric acid (or Krebs) cycle, the process by which mitochondria convert glucose to energy

Background imageEnzyme Collection: ATPase molecule F006 / 9441

ATPase molecule F006 / 9441
ATPase molecule. Molecular model of the ATP-dependent oligomerisation domain of N-ethylmaleimide sensitive factor (NSF), a hexameric ATPase

Background imageEnzyme Collection: Caspase-9 with inhibitor, molecular model F006 / 9442

Caspase-9 with inhibitor, molecular model F006 / 9442
Caspase-9 complexed with an inhibitor, molecular model. Caspase-9 is a protease, an enzyme that cleaves proteins, that plays a role in apoptosis (programmed cell death)

Background imageEnzyme Collection: DNA transcription, molecular model F006 / 9424

DNA transcription, molecular model F006 / 9424
DNA transcription. Molecular model of the enzyme RNA polymerase II synthesising a mRNA (messenger ribonucleic acid) strand from a DNA (deoxyribonucleic acid) template

Background imageEnzyme Collection: Nitric oxide synthase molecule F006 / 9436

Nitric oxide synthase molecule F006 / 9436
Nitric oxide synthase, molecular model. This enzyme catalyses the production of nitric oxide from L-arginine. Nitric oxide is involved in cellular signalling

Background imageEnzyme Collection: Flu virus surface protein molecule F006 / 9433

Flu virus surface protein molecule F006 / 9433
Flu virus surface protein molecule. Molecular model of the neuraminidase glycoprotein enzyme found on the surface of the influenza A (flu) virus

Background imageEnzyme Collection: Succinate dehydrogenase enzyme F006 / 9432

Succinate dehydrogenase enzyme F006 / 9432
Succinate dehydrogenase enzyme. Molecular model of the succinate dehydrogenase (complex II) enzyme from an Escherichia coli bacterium

Background imageEnzyme Collection: Flu virus surface protein and antibody F006 / 9428

Flu virus surface protein and antibody F006 / 9428
Flu virus surface protein and antibody. Molecular model of the neuraminidase glycoprotein enzyme found on the surface of the influenza (flu) virus

Background imageEnzyme Collection: DNA helicase molecule F006 / 9426

DNA helicase molecule F006 / 9426
DNA helicase. Molecular model of a helicase molecule from the SV40 virus. Helicases are enzymes that separate the two strands of the DNA double helix

Background imageEnzyme Collection: Hepatitis C polymerase enzyme F006 / 9427

Hepatitis C polymerase enzyme F006 / 9427
Hepatitis C polymerase enzyme, molecular model. This protein is the NS5b RNA polymerase found in the virus hepatitis C (genotype-1b, strain J4)

Background imageEnzyme Collection: Hammerhead ribozyme molecule F006 / 9422

Hammerhead ribozyme molecule F006 / 9422
Hammerhead ribozyme, molecular model. Ribozymes are RNA (ribonucleic acid) molecules that catalyse certain biochemical reactions

Background imageEnzyme Collection: Methyltransferase and DNA F006 / 9421

Methyltransferase and DNA F006 / 9421
Methyltransferase and DNA. Molecular model of the enzyme HhaI methyltransferase (beige) complexed with a molecule of DNA (deoxyribonucleic acid, red and blue)

Background imageEnzyme Collection: Lactate dehydrogenase enzyme molecule F006 / 9411

Lactate dehydrogenase enzyme molecule F006 / 9411
Lactate dehydrogenase enzyme, molecular model. This enzyme converts pyruvate to lactate in the final steps of glycolysis, and lactate to pyruvate during the lactic acid cycle

Background imageEnzyme Collection: Lipase molecule F006 / 9409

Lipase molecule F006 / 9409
Lipase molecule, molecular model. Lipase is an enzyme that breaks lipids (fats) into fatty acids and glycerol. Human pancreatic lipase is the main enzyme responsible for breaking down fat in

Background imageEnzyme Collection: Ubiquitin ligase molecule F006 / 9407

Ubiquitin ligase molecule F006 / 9407
Ubiquitin ligase, molecular model. This enzyme tags proteins for degradation by attaching a ubiquitin molecule to them

Background imageEnzyme Collection: Antibiotic resistance enzyme molecule F006 / 9405

Antibiotic resistance enzyme molecule F006 / 9405
Antibiotic resistance enzyme. Molecular model of an aminoglycoside phosphotransferase enzyme. This enzyme confers resistance to aminoglycoside antibiotics

Background imageEnzyme Collection: Galactoside acetyltransferase molecule F006 / 9400

Galactoside acetyltransferase molecule F006 / 9400
Galactoside acetyltransferase, molecular model. This enzyme from the bacterium Escherichia coli is involved in the lac operon

Background imageEnzyme Collection: Antibiotic resistance enzyme molecule F006 / 9399

Antibiotic resistance enzyme molecule F006 / 9399
Antibiotic resistance enzyme. Molecular model of kanamycin nucleotidyltransferase (KNTase). This bacterial enzyme is responsible for resistance to a number of antibiotics

Background imageEnzyme Collection: Enzyme catalysing DNA recombination F006 / 9395

Enzyme catalysing DNA recombination F006 / 9395
Enzyme catalysing DNA recombination. Molecular model of the enzyme CRE (cyclization recombination) recombinase (green and purple) mediating the recombination of strands of DNA (deoxyribonucleic acid)

Background imageEnzyme Collection: DNA polymerase Klenow fragment F006 / 9397

DNA polymerase Klenow fragment F006 / 9397
Klenow fragment of DNA polymerase I. Molecule model of the Klenow, or large, fragment from DNA polymerase I complexed with DNA (deoxyribonucleic acid, red and blue)

Background imageEnzyme Collection: Proteinase inhibitor molecule F006 / 9394

Proteinase inhibitor molecule F006 / 9394
Proteinase inhibitor. Molecular model of a proteinase inhibitor, or antitrypsin, molecule bound to a tryspin protease. The proteinase inhibitor is a type of serine protease inhibitor (serpin)

Background imageEnzyme Collection: DNA polymerase IV with DNA F006 / 9390

DNA polymerase IV with DNA F006 / 9390
polymerase IV with DNA. Molecular model of DNA polymerase IV (beige) complexed with a molecule of DNA (deoxyribonucleic acid, red and blue)

Background imageEnzyme Collection: Uroporphyrinogen III decarboxylase F006 / 9387

Uroporphyrinogen III decarboxylase F006 / 9387
Uroporphyrinogen III decarboxylase. Molecular model of the enzyme human uroporphyrinogen III decarboxylase (UROD). Mutations or deficiencies in this enzyme cause the disorder porphyria with a build

Background imageEnzyme Collection: HIV reverse transcription enzyme F006 / 9385

HIV reverse transcription enzyme F006 / 9385
HIV reverse transcription enzyme. Molecular model of the reverse transcriptase enzyme found in HIV (the human immunodeficiency virus) bound to the inhibitor nevirapine

Background imageEnzyme Collection: Anthrax lethal factor molecule F006 / 9384

Anthrax lethal factor molecule F006 / 9384
Anthrax lethal factor, molecular model. This enzyme is one of three protein components that form the anthrax toxin produced by the bacterium Bacillus anthracis

Background imageEnzyme Collection: Manganese catalase enzyme molecule F006 / 9383

Manganese catalase enzyme molecule F006 / 9383
Manganese catalase. Molecular model of the enzyme manganese catalase from the bacterium Lactobacillus plantarum. This enzyme catalyses the break down of hydrogen peroxide to water and oxygen

Background imageEnzyme Collection: Photosystem I molecule F006 / 9380

Photosystem I molecule F006 / 9380
Photosystem I. Molecular model of the photosystem I complex from the cyanobacterium Synechococcus elongatus. Shown here are beta-carotene, alpha-chlorophyll and reaction centre subunits

Background imageEnzyme Collection: Anthrax lethal factor molecule F006 / 9379

Anthrax lethal factor molecule F006 / 9379
Anthrax lethal factor, molecular model. This enzyme is one of three protein components that form the anthrax toxin produced by the bacterium Bacillus anthracis

Background imageEnzyme Collection: Calcium pumping ATPase muscle enzyme F006 / 9377

Calcium pumping ATPase muscle enzyme F006 / 9377
Calcium pumping ATPase enzyme. Molecular model of the ATPase enzyme that pumps calcium in and out of muscle cells and controls muscle contractions

Background imageEnzyme Collection: Chitinase enzyme molecule F006 / 9374

Chitinase enzyme molecule F006 / 9374
Chitinase, molecular model. This enzyme catalyses the break down of glycosidic bonds in chitin, the main component of fungal cell walls and the exoskeletons of arthropods

Background imageEnzyme Collection: DNA transcription, molecular model F006 / 9368

DNA transcription, molecular model F006 / 9368
DNA transcription. Molecular model of the enzyme RNA polymerase II synthesising a mRNA (messenger ribonucleic acid) strand from a DNA (deoxyribonucleic acid) template

Background imageEnzyme Collection: Hexokinase sugar enzyme F006 / 9370

Hexokinase sugar enzyme F006 / 9370
Hexokinase, molecular model. This enzyme promotes the conversion (phosphorylation) of glucose into glucose 6-phosphate. Cells then use the glucose 6-phosphate when they require energy

Background imageEnzyme Collection: Cholesterol producing enzyme and statin F006 / 9366

Cholesterol producing enzyme and statin F006 / 9366
Cholesterol producing enzyme and statin. Computer model showing the molecular structure of HMG-CoA reductase (HMGCR) in complex with Atorvastatin

Background imageEnzyme Collection: Cholesterol producing enzyme molecule F006 / 9365

Cholesterol producing enzyme molecule F006 / 9365
Cholesterol producing enzyme. Molecular model of HMG-CoA reductase (HMGCR), the rate-controlling enzyme of the metabolic pathway that produces cholesterol in the body

Background imageEnzyme Collection: Bacterial cell wall enzyme molecule F006 / 9364

Bacterial cell wall enzyme molecule F006 / 9364
Bacterial cell wall enzyme. Molecular model of D-alanyl-D-alanine carboxypeptidase, a transpeptidase. This enzyme cross-links peptidoglycan chains in bacterial cell walls, making them rigid

Background imageEnzyme Collection: Phosphoglucose isomerase molecule F006 / 9361

Phosphoglucose isomerase molecule F006 / 9361
Phosphoglucose isomerase molecule. Molecular model of a rabbit phosphoglucose isomerase molecule complexed with a fructose-6-phosphate molecule

Background imageEnzyme Collection: HIV reverse transcription enzyme F006 / 9360

HIV reverse transcription enzyme F006 / 9360
HIV reverse transcription enzyme. Molecular model of the reverse transcriptase enzyme found in HIV (the human immunodeficiency virus)

Background imageEnzyme Collection: HGPRTase molecule F006 / 9359

HGPRTase molecule F006 / 9359
HGPRTase. Molecular model of hypoxanthine-guanine phosphoribosyltransferase (HGPRTase) bound to a molecule of guanosine monophosphate (GMP). HGPRTase is involved in the purine salvage pathway



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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.