Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
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.
The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.
3D cartoon and Gaussian surface models. PDB 2aai, white background.
Freshness capsule
orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
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.
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
Abstract organic growing forms
New variant of coronavirus, mutation in the virus's spike protein
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.
Prions are misfolded proteins with the ability to transmit their misfolded shape onto normal variants of the same protein. They characterize several fatal and transmissible neurodegenerative diseases in humans and many other animals.
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.
Rapamycin, also known as sirolimus is a macrolide compound that has immunosuppressant functions and prevents transplant rejection through the inhibition of  the protein complex mTORC1.
Dengue virus cell. 3D Render
3D model of a protein molecule. The spatial oriented structure of the macromolecule.
Abstract organic cube 3d shape,  information moving in virtual space
Botulinum toxin (3d structure) which prevents the release of the neurotransmitter acetylcholine from axon endings at the neuromuscular junction. Infection with the bacterium causes botulism.
Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria
3D cartoon and Gaussian surface models, chain id color scheme, PDB 5y0m, white background
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.
Gamma secretase protein complex. Multi-subunit intramembrane protease that plays role in processing of proteins. 3D illustration.
Molecular Model of Human Insulin with disulfide bonds shown.
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 background of curved wires
protein G−DNA conjugate an antibody to the intended area on the surface of bioassay chips or particles; 3d rendering
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. Hologram view. HUD, FUI, SEM
3D cartoon and Gaussian surface models. chain id color scheme, PDB 5zjd, white background.
Multicolored flowing and interweaving fusion of spheres 3D abstract concept.
Apolipoprotein D, a protein mainly produced in the brain and testes.  A biomarker of androgen insensitivity syndrome. 3d rendering.
chromosome,Human genome concept
Free Images: "bestof:PDB 2yhx EBI.jpg Low resolution protein structures Proteins of incorrect partial and unknown sequence Proteins of incorrect partial and unknown sequence"
Jets planes pilots cockpits.jpg
AmareloDescendo@Sé.jpg
dna-double-helix-science-rna-296744.svg
Gen. Graziani.jpg
FOXA2-phylo.svg
Grusenberg_by_Repin.jpg
Shakespeare_Cobbe_portrait_detail.jpg
Main protein structure levels pl - secondary structure.svg
Mn coa uvs aimag 1999.svg
GabrielDeAristizábalYEspinosa.jpg
Equirectangular with rhumb+circle+triangle.svg
2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
Men_and_Trucks_-_Sawyer_Stoll_-_Tweed.jpg
Main protein structure levels pl.svg
Alexandre-Gabriel_Decamps_-_The_Suicide_-_Walters_3742.jpg
Felice_Beato_(British,_born_Italy_-_(Portrait_of_two_European_men,_one_seated,_one_standing)_-_Google_Art_Project.jpg
The_Adoration_of_the_Magi_-_Google_Art_Project_(6821891).jpg
P450cycle.svg
Worldwide Photovoltaic Deployment in Watts per Capita by Country.svg
Design_Analysis_of_the_P-38_Lightning.png
PDB 2yhx EBI.jpg
PDB 3ldh EBI.jpg
PDB 1grh EBI.jpg
PDB 1hr3 EBI.jpg
PDB 2pgk EBI.jpg
PDB 4cat EBI.jpg
PDB 1hkg EBI.jpg
PDB 1tnv EBI.jpg
PDB 1qtj EBI.jpg
PDB 1k4r EBI.jpg
PDB 1ld4 EBI.jpg
PDB 3cpw EBI.png
PDB 2om7 EBI.png
PDB 2jxm EBI.png
PDB 3du7 EBI.png
PDB 2r1g EBI.png
PDB 2qam EBI.png
PDB 2qbe EBI.png
PDB 2qbg EBI.png
PDB 2qp1 EBI.png
PDB 3df2 EBI.png
PDB 3df4 EBI.png
PDB 2qba EBI.png
PDB 2qbc EBI.png
PDB 2qbi EBI.png
PDB 2qbk EBI.png
PDB 2qov EBI.png
PDB 2qox EBI.png
PDB 2z4l EBI.png
PDB 2z4n EBI.png
PDB 2vhm EBI.png
PDB 2vhn EBI.png
PDB 3bbx EBI.png
PDB 2qao EBI.png
PDB 2qoz EBI.png
PDB 2rdo EBI.png
PDB 2qwn EBI.png
PDB 2vqe EBI.png
PDB 2vqf EBI.png
PDB 2uxd EBI.png
PDB 3d5a EBI.png
PDB 3d5c EBI.png
PDB 2uxb EBI.png
PDB 2v46 EBI.png
PDB 2v48 EBI.png
PDB 2qnh EBI.png
PDB 2qex EBI.png
PDB 3cme EBI.png
PDB 2qa4 EBI.png
PDB 3ccm EBI.png
PDB 3cc7 EBI.png
PDB 3ccu EBI.png
PDB 3cce EBI.png
PDB 3ccl EBI.png
PDB 3ccv EBI.png
PDB 3cc4 EBI.png
PDB 3ccq EBI.png
PDB 3cd6 EBI.png
PDB 3ccs EBI.png
PDB 3cma EBI.png
PDB 3ccr EBI.png
PDB 3ccj EBI.png
PDB 2qal EBI.png
PDB 2qan EBI.png
PDB 2qbf EBI.png
PDB 2qbd EBI.png
PDB 3df1 EBI.png
PDB 3df3 EBI.png
PDB 2qoy EBI.png
PDB 2qp0 EBI.png
PDB 2qb9 EBI.png
PDB 2qbb EBI.png
PDB 2qbh EBI.png
PDB 2qbj EBI.png
PDB 2qou EBI.png
PDB 2qow EBI.png
PDB 2z4m EBI.png
PDB 2vho EBI.png
PDB 2z4k EBI.png
PDB 2vhp EBI.png
Terms of Use   Search of the Day