Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
A ball and stick + ribbons model of human Interleukin 2 or IL-2. Interleukin is a hormone which acts as a signalling molecule for the immune system.
3D cartoon and Gaussian surface models, PDB 6vg8, white background
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria.  Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
Abstract geometric shape
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
Model of protein alpha helices forming an ion channel.
Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.
A molecule of sucrose, showing thermal ellipsoids.
Abstract Pink And Green Knot
A ball and stick + ribbons model of HIV protease - an enzyme that is the target of much AIDS and HIV research.
3D cartoon and Gaussian surface models. PDB 2aai, white background.
Abstract geometric shape
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.
DNA A-T Pair
Beta-amyloid (Abeta) peptide, 3D rendering. Major component of plaques found in Alzheimer's disease. Cartoon representation.
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
Cholera toxin, molecular model. Cholera toxin (choleragen) is a protein complex secreted by the bacterium Vibrio cholerae, that causes the disease cholera. It is made up of a wedge-shaped A subunit (right part of illustration) and five B subunits (left part of illustration) that form a ring which binds to the intestinal lining. In its most severe forms, cholera is one of the most rapidly fatal illnesses known.
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 5y0m, white background
Colorful Molecules Background
Remdesivir is a broad-spectrum antiviral medication, it is a specific treatment for COVID-19. 3d illustration
Molecular model of tyrosine, one of 20 required amino acid to form proteins.
Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.
Scientific background. 3D render.
PKM2 plays key roles in reprogramming cancer cells from energy production to growth (Warburg Effect). The dimeric form of the enzyme is not only less active in glycolysis but can also move into the nucleus to promote the transcription of other cancer-causing genes. A substrate analogon (red) is bound to the active site. PKM2 is a target for anti-cancer therapies. PDB entry: 6WP3.
A space-filling molecular model of collagen, a fibrous protein that provides structural support in animals. It has a distinctive triple helix structure. Isolated on black.
3D cartoon and Gaussian surface models, PDB 1j7n, chain id color scheme, white background
3d render
Afamelanotide is a synthetic peptide stimulating hormone used to prevent skin damage from the sun. 3d illustration
Molecular Model of Vitamin E.
Free Images: "bestof:PDB 1yfw EBI.jpg All beta proteins Double-stranded beta-helix RmlC-like cupins 3-hydroxyanthranilic acid dioxygenase-like 3-hydroxyanthranilate-3 4-dioxygenase"
PDB 1yfw EBI.jpg
PDB 1yfu EBI.jpg
PDB 1yfx EBI.jpg
PDB 1yfy EBI.jpg
PDB 1zvf EBI.png
PDB 1juh EBI.jpg
PDB 1h1i EBI.jpg
PDB 1gqh EBI.jpg
PDB 1eyb EBI.jpg
PDB 1ey2 EBI.jpg
PDB 1zrr EBI.jpg
PDB 1vr3 EBI.jpg
PDB 2b5h EBI.jpg
PDB 2gh2 EBI.jpg
PDB 2atf EBI.jpg
PDB 2q4s EBI.jpg
PDB 2gm6 EBI.png
PDB 2ic1 EBI.png
PDB 3eln EBI.png
PDB 3bu7 EBI.png
PDB 1gqg EBI.jpg
PDB 1h1m EBI.jpg
PDB 1y3t EBI.jpg
PDB 2d40 EBI.png
PDB 2phd EBI.png
PDB 2bnm EBI.jpg
PDB 2bno EBI.jpg
PDB 1zzc EBI.jpg
PDB 1zz7 EBI.jpg
PDB 1zz6 EBI.jpg
PDB 1zz8 EBI.jpg
PDB 2bnn EBI.jpg
PDB 1zzb EBI.jpg
PDB 1zz9 EBI.jpg
PDB 1y9q EBI.jpg
PDB 1dzr EBI.jpg
PDB 1dzt EBI.jpg
PDB 1ep0 EBI.jpg
PDB 1epz EBI.jpg
PDB 1nxm EBI.jpg
PDB 2ixl EBI.jpg
PDB 1nyw EBI.jpg
PDB 1nzc EBI.jpg
PDB 2ixc EBI.jpg
PDB 1upi EBI.jpg
PDB 1pm7 EBI.jpg
PDB 2ixh EBI.jpg
PDB 2ixj EBI.jpg
PDB 1rtv EBI.jpg
PDB 1wlt EBI.jpg
PDB 1oi6 EBI.jpg
PDB 1ofn EBI.jpg
PDB 2c0z EBI.jpg
PDB 1x82 EBI.jpg
PDB 1x7n EBI.jpg
PDB 1qxr EBI.jpg
PDB 1qxj EBI.jpg
PDB 1qy4 EBI.jpg
PDB 1x8e EBI.jpg
PDB 2gc0 EBI.jpg
PDB 2gc1 EBI.jpg
PDB 2gc3 EBI.jpg
PDB 1j3q EBI.jpg
PDB 2gc2 EBI.jpg
PDB 1j3p EBI.jpg
PDB 1j3r EBI.jpg
PDB 1o5u EBI.jpg
PDB 1lkn EBI.jpg
PDB 1o4t EBI.jpg
PDB 1v70 EBI.jpg
PDB 2dct EBI.jpg
PDB 2f4p EBI.jpg
PDB 1yhf EBI.jpg
PDB 1vj2 EBI.jpg
PDB 2et1 EBI.jpg
PDB 1fi2 EBI.jpg
PDB 2et7 EBI.jpg
PDB 2ete EBI.jpg
PDB 1lrh EBI.jpg
PDB 1lr5 EBI.jpg
PDB 2phl EBI.jpg
PDB 1dgw EBI.jpg
PDB 2cau EBI.jpg
PDB 2cav EBI.jpg
PDB 1dgr EBI.jpg
PDB 1cau EBI.jpg
PDB 1cax EBI.jpg
PDB 1cav EBI.jpg
PDB 1caw EBI.jpg
PDB 1fxz EBI.jpg
PDB 1ucx EBI.jpg
PDB 1ud1 EBI.jpg
PDB 1uij EBI.jpg
PDB 1ipj EBI.jpg
PDB 1ipk EBI.jpg
PDB 1od5 EBI.jpg
PDB 1uik EBI.jpg
PDB 1j58 EBI.jpg
PDB 1uw8 EBI.jpg
PDB 1l3j EBI.jpg
Terms of Use   Search of the Day