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A ribbons model of Human Growth Hormone, also known as Somatotropin, with a translucent surface model.

3D cartoon and Gaussian surface models, chain id color scheme, PDB 5y0m, white background

3d rendering of ubiquitin is attached to target proteins by a process called ubiquitination

$The three-dimensional structure of proteins is represented in a variety of conformations. This image is based on the ribbon structure of a protein. It is suitable for biology notebooks and book covers.\nThis image has not been created by AI.$

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.

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.

Neurotoxin concept Neurotoxin of type A of bacterium Clostridium botulinum which causes food intoxication botulism, molecular model 3d rendering

Gamma secretase protein complex. Multi-subunit intramembrane protease that plays role in processing of proteins. 3D illustration.

Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer

Structure of novel coronavirus spike receptor-binding domain (pink) complexed with its receptor ACE2 (blue), surface modeel, white background

Cloud made of wire and multicolored spheres, retro futuristic style, 3d.

A ball and stick model of Human Insulin. Isolated on black.

Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria. Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.

New variant of coronavirus, mutation in the virus's spike protein

The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.

Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria

3D cartoon and Gaussian surface models, PDB 1j7n, chain id color scheme, white background

$Phospholipid bilayer membrane structures that make up living cells and their contents. This is an image of membrane proteins in the membrane.\nThis image, which looks like a plastic model, evokes biology and biochemistry. It can be used as a cover for magazines, textbooks and presentation materials.\nThis image was not created by AI.$

Brain-derived neurotrophic factor (3d), also known as BDNF, a protein that supports the survival of existing neurons, and encourages the growth and differentiation of new neurons and synapses.

Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.

Aztreonam (left, orange) inhibits the beta-lactamase from Acinetobacter species. Avibactam (red) inhibits the beta-lactamase (blue) of Clostridioides difficile.

Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway. Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.

3D cartoon and Gaussian surface models, PDB 2j0D, white background.

3D CG rendered image of scientifically accurate Adeno-Associated Virus (AAV) Capsid Structure based on PDB : 1LP3 (capsomere)

Bacteria Streptococcus thermophilus,Group A Streptococcus,Erythrogenic toxin

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2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg

Main protein structure levels pl - secondary structure.svg

Protein primary structure zh (zh-tw).svg

Beta sheet bonding antiparallel-color.svg

Julian Onderdonk - Early Spring—Bluebonnets and Mesquite - Google Art Project.jpg

Julian Onderdonk - Sunlight and Shadow - Google Art Project.jpg

Cell membrane detailed diagram blank.svg