Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
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.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
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 3omv, white background
c-Myc and Max transcription factors bound to DNA. 3D illustration. Atoms shown as spheres with conventional color coding.
Molecular Model of Infliximab, or Remicade, a monoclonal antibody against tumour necrosis factor alpha (TNF-α), which is used to treat autoimmune diseases
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
Covid-19 Coronavirus Variants Omicron Delta Gamma Beta Alpha Pandemic Virus Disease Mutation
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.
Immunoglobulin G (IgG) - 3d rendered image. Microbiology illustration  the structure of an antibody. The Y-shaped structure. IgG is the most common type of antibody.
The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.
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 cartoon model, secondary structure color scheme, PDB 4krf, white background
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer,lipid bi-layer cell anatomy
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.
X chromosome with degrading or aging telomeres isolated on white background
Brain-derived neurotrophic factor (3d), also known as BDNF, a protein that supports the survival of existing neurons, and encourages the growth and differentiation of new neurons and synapses.
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.
Beta-amyloid (Abeta) peptide, 3D rendering. Major component of plaques found in Alzheimer's disease. Cartoon representation.
Inside protein molecule
3D cartoon and Gaussian surface models. PDB 3kqg, chain id color scheme, white background.
A ball and stick model of a Polytetrafluoroethylene molecule, also known as PTFE or most commonly Teflon. It is a polymer consisting of only carbon and fluorine atoms. It is used as a non-stick coating for cookware, as a lubricant, and it is also used to contain highly reactive chemicals as it is extremely non-reactive.
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria.  Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
Freshness capsule
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.
Intestinal microbiome,Probiotics health benefits,Gut bacteria,lactococcus, propionibacterium, bifidobacterium.
3D model of a protein molecule. The spatial oriented structure of the macromolecule.
What micro plastic is made of - Chemical ingredients.\nClose up of microplastic on finger concept of water pollution and global warming
An antibody, also known as an immunoglobulin, is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses. 3D cartoon and Gaussian surface models with differently colored chains, white background.
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.
Free Images: "bestof:PDB 1gi8 EBI.jpg All beta proteins Trypsin-like serine proteases Trypsin-like serine proteases Eukaryotic proteases Urokinase-type plasminogen activator LMW"
PDB 1gi8 EBI.jpg
PDB 1gja EBI.jpg
PDB 1owh EBI.jpg
PDB 1gj8 EBI.jpg
PDB 1c5y EBI.jpg
PDB 1c5x EBI.jpg
PDB 1gjc EBI.jpg
PDB 1gi7 EBI.jpg
PDB 1o3p EBI.jpg
PDB 1c5z EBI.jpg
PDB 1c5w EBI.jpg
PDB 1sqo EBI.jpg
PDB 1gjb EBI.jpg
PDB 1f5l EBI.jpg
PDB 1sqa EBI.jpg
PDB 1u6q EBI.jpg
PDB 1f5k EBI.jpg
PDB 1vj9 EBI.jpg
PDB 1f92 EBI.jpg
PDB 1owk EBI.jpg
PDB 1lmw EBI.jpg
PDB 1owj EBI.jpg
PDB 2viv EBI.png
PDB 2vin EBI.png
PDB 1w10 EBI.png
PDB 1w13 EBI.png
PDB 1w14 EBI.png
PDB 2viw EBI.png
PDB 1gj7 EBI.jpg
PDB 1owe EBI.jpg
PDB 1o5c EBI.jpg
PDB 1gjd EBI.jpg
PDB 1o5a EBI.jpg
PDB 1ejn EBI.jpg
PDB 1gj9 EBI.jpg
PDB 1gi9 EBI.jpg
PDB 1o5b EBI.jpg
PDB 1sqt EBI.jpg
PDB 1vja EBI.jpg
PDB 1sc8 EBI.jpg
PDB 1owd EBI.jpg
PDB 1owi EBI.jpg
PDB 2vip EBI.png
PDB 2vio EBI.png
PDB 1w0z EBI.png
PDB 1w11 EBI.png
PDB 2r2w EBI.png
PDB 2viq EBI.png
PDB 1w12 EBI.png
PDB 1rtf EBI.jpg
PDB 1a5h EBI.jpg
PDB 1bda EBI.jpg
PDB 1a5i EBI.jpg
PDB 1tb6 EBI.jpg
PDB 2stb EBI.jpg
PDB 1h9i EBI.jpg
PDB 1rfn EBI.jpg
PDB 1pfx EBI.jpg
PDB 2bz6 EBI.jpg
PDB 1kli EBI.jpg
PDB 1dx5 EBI.jpg
PDB 1hrt EBI.jpg
PDB 1gl0 EBI.jpg
PDB 1cgj EBI.jpg
PDB 1tbr EBI.jpg
PDB 1ldt EBI.jpg
PDB 1nu7 EBI.jpg
PDB 1hj9 EBI.jpg
PDB 1utq EBI.jpg
PDB 1j8a EBI.jpg
PDB 1utp EBI.jpg
PDB 5ptp EBI.jpg
PDB 1s5s EBI.jpg
PDB 1c1t EBI.jpg
PDB 1gi2 EBI.jpg
PDB 1o35 EBI.jpg
PDB 1c5u EBI.jpg
PDB 1c1p EBI.jpg
PDB 1gi1 EBI.jpg
PDB 1c5s EBI.jpg
PDB 1o2w EBI.jpg
PDB 1gi0 EBI.jpg
PDB 1c1r EBI.jpg
PDB 1o3k EBI.jpg
PDB 1bty EBI.jpg
PDB 1c5q EBI.jpg
PDB 1c2j EBI.jpg
PDB 1o33 EBI.jpg
PDB 1c1o EBI.jpg
PDB 1o2q EBI.jpg
PDB 1gj6 EBI.jpg
PDB 1c5p EBI.jpg
PDB 1o34 EBI.jpg
PDB 1xui EBI.jpg
PDB 1o2i EBI.jpg
PDB 1o3h EBI.jpg
PDB 1o3n EBI.jpg
PDB 1o2n EBI.jpg
PDB 1o37 EBI.jpg
PDB 1o30 EBI.jpg
Terms of Use   Search of the Day