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Brain-derived neurotrophic factor and Neurotrophin-4, NT-3 are neurotrophic factors in the NGF (Nerve Growth Factor) family of neurotrophins. 3D cartoon and Gaussian surface models with differently colored chains, white background.

Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration

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.

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

Bovine beta-lactoglobulin protein, 3D structure. Major whey protein, present in cow milk. Important food allergen.

3d render Bacteria closeup (depth of field)

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

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

organic chemistry, model of the protein molecule - illustration of a biological particle

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

3D model of a protein molecule. Endothelial tyrosine kinase receptor, a marker of angiogenesis.

Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view

After binding extracellular dopamine (red), the dopamine receptor D1 (violet) activates a coupled heterotrimeric G-protein (blue), starting a intracellular signal cascade. Source: PDB entry 7ljd

3D cartoon and Gaussian surface models, PDB 6gu2, white background

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

Aromatase (estrogen synthase) enzyme. Protein responsible for the key step in the synthesis of estrogens. 3D illustration. Cartoon representation.

A model of a nucleosome. Isolated on black.

The intermembrane transporter of the Gram-negative bacterium Acinetobacter baylyi transports a lipopolysaccharide (orange) through the inner membrane consuming ATP (red)

3D cartoon and Gaussian surface models, chain id color scheme, PDB 2wrw, white background

Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer,lipid bi-layer cell anatomy

3D CG rendered image of scientifically accurate Polio Virus Capsid Structure based on PDB : 2PLV (capsomere)

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

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.

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Mitochondrial electron transport chain—Etc4 pt.svg

Mitochondrial electron transport chain pl.svg

Mitochondrial electron transport chain—Etc4.svg

Mitochondrial electron transport chain short PL.svg

Mitochondrial electron transport chain—Etc4 id.svg