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A ribbons model of an antibody, also known as immunoglobin. The immune system produces antibodies (using white blood cells) which then identify and attack viruses and bacteria.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 5y0m, white background
Gamma secretase protein complex. Multi-subunit intramembrane protease that plays role in processing of proteins. 3D illustration.
Abstract geometric shape
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
Molecular Model of Cyclosporine, an immunosuppressant drug widely used in organ transplantation to prevent rejection.
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria.  Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
Background created by fractal geometry.
Tryptophan or Trp is an alpha-amino acid that is used in the biosynthesis of proteins, 3d illustration
A ribbons model of Human Growth Hormone, also known as Somatotropin, with a translucent surface model.
3D cartoon and Gaussian surface models. PDB 3kqg, chain id color scheme, white background.
abstract geometric shape
Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.
Molecular model of Adenosine triphosphate,  or Adenosine-5'-triphosphate (ATP)
Aztreonam (left, orange) inhibits the beta-lactamase from Acinetobacter species. Avibactam (red) inhibits the beta-lactamase (blue) of Clostridioides difficile.
Background created by fractal geometry.
Remdesivir is a broad-spectrum antiviral medication, it is a specific treatment for COVID-19. 3d illustration
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, chain id color scheme, PDB 4ci9, white background
abstract geometric shape
Bovine beta-lactoglobulin protein, 3D structure. Major whey protein, present in cow milk. Important food allergen.
20 standard amino acids, from left to right they are: glycine, alanine, cysteine, proline, valine, serine, threonine, leucine, isoleucine, aspartic acid, asparagine, glutamic acid, glutamine, methionine, lysine, histidine, arginine, phenylalanine, tyrosine, and tryptophan
PETase (left) degrades  polyethylene terephtalate (PET) into monohydroxyethyl terephthalate (MHET) and MHETase degrades MHET ethylene glycol (EG) and terephthalic acid (TPA). The substrates in the binding sites are depicted in red.
Background created by fractal geometry.
Organic shape 3d virus model isolated on black background, medical 3d rendering illustration
A model of a molecule of arginine, an amino acid. Amino acids are the building blocks of proteins and have many functions in metabolism. In particular, Arginine has an important function in the immune system, wound healing and cell division.
3D cartoon and Gaussian surface models, PDB 3hg3, white background
Rendered Remdesivir molecule in 3D, an experimental drug from Gilead, used to cure the first case of 2019-nCoV in the United States (for a patient at Seattle, Washington). The model showed accurate atom connection and stereochemistry, based on the chemical structure available in public space from U.S. National Library of Medicine, which was professionally checked. Color symbols - green=carbon, red=oxygen, blue=nitrogen, white=hydrogen, purple=phosphorus
Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.
3d structure of l-glucose molecule.
Free Images: "bestof:PDB 3blq EBI.png All alpha proteins Cyclin-like Cyclin-like Cyclin Cyclin T1 Alpha and beta proteins a+b Protein kinase-like PK-like Protein kinase-like PK-like"
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PKARII.svg
2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
Proteinoxidation 03.svg
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PDB 3blq EBI.png
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