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GABA B receptors are G protein-coupled receptors, also called metabotropic receptors. Binding of an agonist (baclofen, red) leads to a G-protein coupled C-AMP signaling pathway. Source: PDB entries 7eb2, 6r3q,.

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

Proteasomes are molecular machines for breaking down proteins called proteolysis, only target proteins that have been marked for destruction called ubiquitin to the target protein, 3d rendering

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

3D cartoon and Gaussian surface models, PDB 6vg8, white background

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

Variety of healthy vegan, plant based protein source and body building food. Tofu soy beans tempeh, green vegetables, nuts, seeds, quinoa oat meal and spirulina. View from above

Immunotherapy of Alzheimer's disease: Monoclonal antibody (light blue) bound to an amyloid beta peptide (orange), that is aggregated to amyloid beta fibrils, which build up amyloid plaques.

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

DNA close-up, DNA Molecule Model, DNA Strands, DNA animation

Covid-19 Coronavirus Variants Omicron Delta Gamma Beta Alpha Pandemic Virus Disease Mutation

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.

Healthy diet vegan food, veggie protein sources: Tofu, vegan milk, beans, lentils, nuts, soy milk, spinach and seeds. Top view on white table.

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.

After dopamine binding, the dopamine receptor changes his shape and binds the inactive G protein.The G protein expels its GDP molecule replacing it by GTP. and falls into two pieces. The Galpha subunit binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.

Myxoid liposarcoma. Myxoid/round cell liposarcoma, or MRCLS, is one of several types of liposarcoma. Liposarcoma is a rare cancer that grows in the cells that store fat in the body. MRCLS usually grows in the arms and legs. These tumors grow slowly, and they can spread to other parts of the body

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

3d rendered Gastric inhibitory polypeptide (GIP, glucose-dependent insulinotropic peptide) endocrine protein hormone, 3D illustration

Digital background depicting innovative technologies in (AI) artificial systems, neural interfaces and internet machine learning technologies

3D cartoon and Gaussian surface models, chain id color scheme, PDB 2iw2, white background

$Top view of various kinds of vegan protein sources like tofu, tempeh, soy beans, soy milk, mushrooms, wakame, lentils, peanuts, spinach and chick peas. All the objects are at the borders of the image and at the center is written \$

orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).

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.

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

Liver Fluke Section under light microscope with white background

Digital medical illustration: Microscopic view of human DNA (PDB-1BNA). Based on actual molecular data.

Paraganglioma is a type of neuroendocrine tumor that forms near certain blood vessels and nerves outside of the adrenal glands. The adrenal glands are important for making hormones that control many functions in the body and are located on top of the kidneys.

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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

Cell membrane detailed diagram blank.svg