Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Calmodulin is an intracelular target of calcium ions. Once activated by Ca2+ (red), calmodulin interacts with various target proteins such as kinases and phosphatases.. It plays an important role in long-term memory. and muscle contraction. CaM has 4 calcium binding sites. PDB entry 3CLN, 1CFD
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer,lipid bi-layer cell anatomy
3D cartoon and Gaussian surface models, PDB 6vg8, white background
Neuroendocrine carcinoma well differentiated (carcinoid) rectum with immunostain synaptophysin
c-Myc and Max transcription factors bound to DNA. 3D illustration. Atoms shown as spheres with conventional color coding.
DNA A-T Pair
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
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria.  Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
Organic objects form a triangle. Artificial space incorporating organic materials.\nThis work was policy within one month. It is also an original work for this brief and cannot be used elsewhere.
3D cartoon and Gaussian surface models. chain id color scheme, PDB 5zjd, white background.
Red cellular tissue, executives and pill-shaped pills
The structure of the protein molecule, tumor marker glioblastoma. X-ray crystalline model of the protein encoded by the MELK gene. 3D rendering.
Inside protein molecule
Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.
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.
Photomicrograph of one celled amoeba. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.
3D cartoon and Gaussian surface models. PDB 2aai, white background.
Medical Laboratory Research Background
Isolated cholesterol molecule between phospholipid molecules membrane 3d rendering
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.
Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.
Aspergillus fumigatus is one of the most common Aspergillus species to cause disease in individuals with an immunodeficiency. This pathogen primarily causes invasive infection in the lung.
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
Squash preparation of  onion root tip cells stained to reveal chromosomes,  Bright field illumination, light microscopy.  This image was taken with the X40 objective lens.  Depth of focus is extremely low at this magnification.  Smaller apertures give greater depth of focus, but image quality deteriorates and resolution is greatly reduced.  The aperture in this image was optimised for contrast and resolution. Chromatic abberation is inevitable in light microscopy, but has been kept to a minimum in this image.
3D cartoon and Gaussian surface models, PDB 1j7n, chain id color scheme, white background
Molecular model of Thymine, 1 of 4 nucleobases to form DNA
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.
Abstract geometric shape
Free Images: "bestof:PDB 1wur EBI.jpg Alpha and beta proteins a+b T-fold Tetrahydrobiopterin biosynthesis enzymes-like GTP cyclohydrolase I GTP cyclohydrolase I EBI License 1wur"
PDB 1wur EBI.jpg
PDB 1a8r EBI.jpg
PDB 1gtp EBI.jpg
PDB 1a9c EBI.jpg
PDB 1n3r EBI.jpg
PDB 1n3s EBI.jpg
PDB 1n3t EBI.jpg
PDB 1fbx EBI.jpg
PDB 1fb1 EBI.jpg
PDB 1wuq EBI.jpg
PDB 1wm9 EBI.jpg
PDB 1is8 EBI.jpg
PDB 1wpl EBI.jpg
PDB 1is7 EBI.jpg
PDB 1jg5 EBI.jpg
PDB 1b66 EBI.jpg
PDB 1b6z EBI.jpg
PDB 1gtq EBI.jpg
PDB 1y13 EBI.jpg
PDB 2g64 EBI.jpg
PDB 2a0s EBI.jpg
PDB 1dhn EBI.jpg
PDB 2dhn EBI.jpg
PDB 1rri EBI.jpg
PDB 1rsi EBI.jpg
PDB 1rrw EBI.jpg
PDB 1rs2 EBI.jpg
PDB 1rsd EBI.jpg
PDB 1rry EBI.jpg
PDB 1u68 EBI.jpg
PDB 1rs4 EBI.jpg
PDB 1nbu EBI.jpg
PDB 1z9w EBI.jpg
PDB 1sql EBI.jpg
PDB 1b9l EBI.jpg
PDB 2iba EBI.jpg
PDB 1wrr EBI.jpg
PDB 2icq EBI.jpg
PDB 2ic0 EBI.jpg
PDB 1r51 EBI.jpg
PDB 1r4u EBI.jpg
PDB 2fxl EBI.jpg
PDB 1r4s EBI.jpg
PDB 2fub EBI.jpg
PDB 1xt4 EBI.jpg
PDB 1r56 EBI.jpg
PDB 1ws2 EBI.jpg
PDB 1xxj EBI.jpg
PDB 1ws3 EBI.jpg
PDB 1xy3 EBI.jpg
PDB 1j2g EBI.jpg
PDB 1vax EBI.jpg
PDB 1vay EBI.jpg
PDB 2nm3 EBI.png
PDB 2nm2 EBI.png
PDB 2zka EBI.png
PDB 2pes EBI.png
PDB 2zkb EBI.png
PDB 3cks EBI.png
PDB 3bk8 EBI.png
PDB 3cku EBI.png
PDB 3bjp EBI.png
PDB 2yzc EBI.png
PDB 2yzb EBI.png
PDB 2yze EBI.png
PDB 2yzd EBI.png
PDB 2bz1 EBI.jpg
PDB 2bz0 EBI.jpg
PDB 1qlm EBI.jpg
PDB 2ntk EBI.jpg
PDB 1kuu EBI.jpg
PDB 2ntl EBI.jpg
PDB 2ntm EBI.jpg
PDB 1g8m EBI.jpg
PDB 1thz EBI.jpg
PDB 1m9n EBI.jpg
PDB 1oz0 EBI.jpg
PDB 1pkx EBI.jpg
PDB 1p4r EBI.jpg
PDB 1pl0 EBI.jpg
PDB 1zcz EBI.jpg
PDB 2be3 EBI.jpg
PDB 1a4i EBI.jpg
PDB 1dig EBI.jpg
PDB 1dia EBI.jpg
PDB 1dib EBI.jpg
PDB 1b0a EBI.jpg
PDB 1edz EBI.jpg
PDB 1ee9 EBI.jpg
PDB 1ni3 EBI.jpg
PDB 1jal EBI.jpg
PDB 1wxq EBI.jpg
PDB 1jw9 EBI.jpg
PDB 1jwb EBI.jpg
PDB 1jwa EBI.jpg
PDB 1ygy EBI.jpg
PDB 1lnz EBI.jpg
PDB 1udx EBI.jpg
PDB 1zud EBI.jpg
PDB 1f0z EBI.jpg
Terms of Use   Search of the Day