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A ball and stick model of a molecule of Human Glucagon, a hormone produced in the pancreas and used by the body to raise levels of glucose in the blood. Glucagon worksin the opposite manner to Insulin, which lowers levels of glucose in the blood - together they work to keep glucose levels stable.

Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).

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

3D cartoon and Gaussian surface models, white background

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

3d render of the epidermal growth factor (EGF) receptor

Frataxin (human) mitochondrial protein. Reduced expression causes Friedreich's ataxia. 3D illustration. Cartoon & wireframe representation.

ATP Synthase Protein - 3d rendered image. Medical microbiology concept. Structure and conformational states of the bovine mitochondrial ATP (Adenosine triphosphate) synthase. Chemical energy is synthesized in eukaryotic cells primarily. Hydrolase. Hologram view. HUD, FUI

A ball-and-stick plus ribbons 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.

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

Afamelanotide is a synthetic peptide stimulating hormone used to prevent skin damage from the sun. 3d illustration

3D cartoon and Gaussian surface models, PDB 1yk0, chain id color scheme, white background

Lysozyme, the natural antibacterial enzyme contained in saliva, milk, mucus, tears, egg white and so on

AI will enable advances in genetic modification technology to treat intractable diseases.

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 beta-secretase - a protein that is important in forming healthy peripheral nerve cells, but is also involved in the onset of Alzheimer's disease.

The glucagon like peptide-1 receptor (GLPr) is a G proteincoupled receptor (GPCR) that mediates the action of GLP-1, a peptide hormone. The activated receptor has a strong effect on the management of type 2 diabetes mellitus and obesity, including glucose homeostasis and regulation of gastric motility and food intake.

Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.

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

3D cartoon and Gaussian surface models, chain id color scheme, PDB 4ci9, white background

3D rendering of biotinylated antibody, an engineered protein designed to bind to specific molecules. Biotin allows researchers to easily track and manipulate these antibodies.

A molecular model of Amyloid protein fibrils. Formed when mis-folded proteins self-assemble into fibrous sheet structures, they are found in the brains of sufferers of Alzheimer's disease and may be implicated in causing the disease.

The amyloid beta peptide (light blue) is a component of the amyloid precursor protein, which is bound to a cell membrane. The gamma secretase enzyme cuts the free form, that aggregates to amyloid plaques. Source: PDB entries 2beg, 1mwp

Rendered coronavirus/2019-nCoV single-stranded RNA, built from experimentally determined Ebola virus crystal structure. Color symbols - bluewhite=carbon, pink=oxygen, lightblue=nitrogen, white=hydrogen, lavender=phosphorus

Prostaglandin D2 or PGD2 is a prostaglandin that binds to the receptor PTGDR as well as CRTH2. 3d illustration

Free Images: "bestof:PDB 1r9u EBI.jpg Peptides - Class Membrane ion channel-forming peptide antibiotics containing D-aminoacids Membrane ion channel-forming peptide antibiotics"

4-amino-N-(thiazol-2-yl)benzenesulfonamide 200.svg

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Overview proteinogenic amino acids-DE.svg

1-aminocyclopropanecarboxylic acid 200.svg

(S)-3-acetoxy-2-aminopropanoic acid 200.svg

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3,3',5,5'-tetramethyl-(1,1'-biphenyl)-4,4'-diamine 200.svg

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3-amino-2,5-dichlorobenzoic acid 200.svg

4-amino-5-hydroxynaphthalene-2,7-disulfonic acid 200.svg

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5-((2-(2-iodoacetamido)ethyl)amino)naphthalene-1-sulfonic acid 200.svg

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Berkeley,_California._Chemist_Ellen_Lew_conducts_thin_layer_chromotography_to_identify_the_amino_acids_in_a_peptide..._-_NARA_-_512805.tif

$Neutron diffraction; Ion channels (5888008521).jpg$

Nanoparticles in a Neural Cell (16017132266).jpg