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A ribbons model of Human Growth Hormone, also known as Somatotropin, with a translucent surface model.
Gamma secretase protein complex. Multi-subunit intramembrane protease that plays role in processing of proteins. 3D illustration.
3d rendering of ubiquitin is attached to target proteins by a process called ubiquitination
The three-dimensional structure of proteins is represented in a variety of conformations. This image is based on the ribbon structure of a protein. It is suitable for biology notebooks and book covers.\nThis image has not been created by AI.
Structure of novel coronavirus spike receptor-binding domain (pink) complexed with its receptor ACE2 (blue), surface modeel, white background
Immunoglobulin G (IgG) - 3d rendered image. Microbiology illustration  the structure of an antibody. The Y-shaped structure. IgG is the most common type of antibody.
Nirmatrelvir inhibits the 3C-like protease of the SARS-CoV 2 virus. The coronavirus 3CL hydrolase enzyme, also known as the main protease, is essential for the maturation of the virus.
Freshness capsule
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
chromosome,Human genome concept
A ball and stick + ribbons model of beta-secretase - a protein that is important in forming healthy peripheral nerve cells, but is also involved in the onset of Alzheimer's disease.
Aromatase (estrogen synthase) enzyme. Protein responsible for the key step in the synthesis of estrogens. 3D illustration. Cartoon representation.
A carboxypeptidase is a protease enzyme that hydrolyzes a peptide bond at the carboxy-terminal end of a protein or peptide. 3D cartoon model, secondary structure color scheme, PDB 2v77, white background.
Dengue virus cell. 3D Render
The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.
DNA Helix - 3d rendered image. Genetic research concept. Complex spiral structure illustration. Medical, science, genetic biotechnology, gene cell, chromosome idea. DNA strands on dark background . Science nanotechnology.
Ferritin is an intracellular protein that stores iron an releases it when required. Iron enters plant ferritin through the hydrophilic 4-fold channel. Source: PDB entry 5yi5
X chromosome with degrading or aging telomeres isolated on black background
A 3D rendering of a SpyTag-SpyCatcher conjugate, the molecular interaction between these biomolecules. This is used in various biotechnological applications for protein labeling and purification.
A ball and stick + ribbons model of human Interleukin 2 or IL-2. Interleukin is a hormone which acts as a signalling molecule for the immune system.
3D cartoon and Gaussian surface models. PDB 2aai, white background.
DNA A-T Pair
Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.
Abstract geometric shape
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria.  Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
This footage shows the translation initiation complex, which consists of the ribosomal small subunit, transfer RNA (tRNA), and translation initiation factors. The golden ribbon represents the RNA.
Neurotoxin concept Neurotoxin of type A of bacterium Clostridium botulinum which causes food intoxication botulism, molecular model 3d rendering
A ball-and-stick molecular model of the hormone Orexin, also known as Hypocretin.  Orexin is involved in the regulation of the sleep/wake cycle and it stimulates apetite, wakefulness and energy expenditure. It has been linked with Alzheimer's disease.  Isolated on white.
3D cartoon and Gaussian surface models, PDB 1j7n, chain id color scheme, white background
Molecular Model of Cyclosporine, an immunosuppressant drug widely used in organ transplantation to prevent rejection.
Free Images: "bestof:PDB 1x6r EBI.jpg Alpha and beta proteins a+b Pili subunits Pili subunits Pilin Type IV Pilin Pak EBI License 1x6r November 16 2008 Type IV Pilin Pak Files"
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Matanaka - Granary, Privy & Schoolhouse.jpg
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Willem IV (1711-51), prins van Oranje-Nassau. Rijksmuseum SK-A-880.jpeg
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Willem IV (1711-51), prins van Oranje-Nassau. Rijksmuseum SK-A-872.jpeg
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Willem IV (1711-51), prins van Oranje Rijksmuseum SK-A-2377.jpeg
Het huwelijk van Jacoba van Beieren, gravin van Holland, en Jan IV, hertog van Brabant, op 10 maart 1418 Rijksmuseum SK-A-1030.jpeg
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Officieren en andere schutters van wijk IV in Amsterdam onder leiding van kapitein Jan Claesz van Vlooswijck en luitenant Gerrit Hudde Rijksmuseum SK-C-1177.jpeg.jpg
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Posthuum portret van Herman Willem Daendels (1762-1818). Gouverneur-generaal (1808-10) Rijksmuseum SK-A-3790.jpeg
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Portret van Adriana Croes Rijksmuseum SK-A-4998.jpeg
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Joost van den Vondel (1587-1679). Dichter Rijksmuseum SK-A-1954.jpeg
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