Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
A carboxypeptidase is a protease enzyme that hydrolyzes a peptide bond at the carboxy-terminal end of a protein or peptide. 3D cartoon model, secondary structure color scheme, PDB 2v77, white background.
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer,lipid bi-layer cell anatomy
c-Myc and Max transcription factors bound to DNA. 3D illustration. Atoms shown as spheres with conventional color coding.
A molecular model of Human Insulin. Isolated on black.
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
Inside protein molecule
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
3D cartoon and Gaussian surface models, PDB 6vg8, white background
Intestinal microbiome,Probiotics health benefits,Gut bacteria,lactococcus, propionibacterium, bifidobacterium.
Segment of human collagen isolated on a white background
In recent years, the presence of bacteria in the body has been reported as the cause of various biological phenomena, and the subject of bacteria is often a hot topic. This image shows bacteria under a microscope. These images of bacteria can be used universally for both good and bad bacteria.\nThis image was not created by AI.
The calcitonin gene related peptide (yellow) binds to its receptor (blue) on neurons and smooth muscle cells of cerebral blood vessels, activating a signal cascade through G-proteins (dark blue) in this cells that leads to a dilatation of the blood vessels (vasodilatation). Blocking the CGRP receptor diminishes the quantity of migraine attacks.\
Closeup of X chromosome with DNA inside
Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.
Abstract geometric shape
3D cartoon model, secondary structure color scheme, PDB 4krf, white background
Infinity sign made out of multiple spheres and circular shapes against grey background.
Ulcerative colitis (UC) is one of the two types of inflammatory bowel disease (IBD), with the other type being Crohn's disease. It is a long-term condition that results in inflammation and ulcers of the colon and rectum.
DNA A-T Pair
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria. Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
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.
Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.
Abstract geometric shape
3D cartoon and Gaussian surface models, PDB 4cmh, white background
Collapse of a donut-shaped object
3D CG rendered image of scientifically accurate Enterobacteria Bacteriophage phiX174 Capsid Structure based on PDB : 1CD3 (capsomere)
3D rendering of an icon with an expanded effect
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
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.
Free Images: "bestof:PDB 2hfg EBI.jpg All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin V set domains antibody variable domain-like Immunoglobulin heavy chain"
Small modular immunopharmaceutical.svg
Heavy chain and common antibody.svg
Engineered monoclonal antibodies.svg
Single chain variable fragment.svg
Bi-specific T-cell engager.svg
Polyvalent single-chain variable fragments.svg
Complement pathway.svg
PDB 2hfg EBI.jpg
PDB 2fjg EBI.jpg
PDB 2h9g EBI.jpg
PDB 1zls EBI.jpg
PDB 1zlv EBI.jpg
PDB 1zlw EBI.jpg
PDB 1zlu EBI.jpg
PDB 2hff EBI.jpg
PDB 1za6 EBI.jpg
PDB 1tpx EBI.jpg
PDB 1tqb EBI.jpg
PDB 1tqc EBI.jpg
PDB 2dqi EBI.jpg
PDB 1ol0 EBI.jpg
PDB 1ohq EBI.jpg
PDB 2b1h EBI.jpg
PDB 2pr4 EBI.jpg
PDB 2b0s EBI.jpg
PDB 2p8l EBI.jpg
PDB 2b1a EBI.jpg
PDB 2pw1 EBI.jpg
PDB 2fjf EBI.jpg
PDB 2pw2 EBI.jpg
PDB 2p8m EBI.jpg
PDB 2p8p EBI.jpg
PDB 1vhp EBI.jpg
PDB 1xfp EBI.jpg
PDB 1kxq EBI.jpg
PDB 1kxv EBI.jpg
PDB 1mvf EBI.jpg
PDB 1jtp EBI.jpg
PDB 1op9 EBI.jpg
PDB 1jtt EBI.jpg
PDB 1kxt EBI.jpg
PDB 1f2x EBI.jpg
PDB 1jto EBI.jpg
PDB 1mel EBI.jpg
PDB 1bzq EBI.jpg
PDB 1g6v EBI.jpg
PDB 1sjv EBI.jpg
PDB 1hcv EBI.jpg
PDB 1i3u EBI.jpg
PDB 1i3v EBI.jpg
PDB 1qd0 EBI.jpg
PDB 1g9e EBI.jpg
PDB 1ieh EBI.jpg
PDB 3b2u EBI.png
PDB 3c09 EBI.png
PDB 2p49 EBI.png
PDB 2p43 EBI.png
PDB 2p42 EBI.png
PDB 2qad EBI.png
PDB 2qqn EBI.png
PDB 3c08 EBI.png
PDB 2jb5 EBI.png
PDB 2oqj EBI.png
PDB 3bky EBI.png
PDB 2jb6 EBI.png
PDB 3b2v EBI.png
PDB 3c2a EBI.png
PDB 2uud EBI.png
PDB 2jix EBI.png
PDB 2r0l EBI.png
PDB 2r0k EBI.png
PDB 3bn9 EBI.png
PDB 3bt2 EBI.png
PDB 3dvg EBI.png
PDB 3dvn EBI.png
PDB 3cfk EBI.png
PDB 3cfj EBI.png
PDB 2z92 EBI.png
PDB 2z91 EBI.png
PDB 2z93 EBI.png
PDB 2fat EBI.png
PDB 3ehb EBI.png
PDB 3cmo EBI.png
PDB 3dgg EBI.png
PDB 2g75 EBI.png
PDB 2qr0 EBI.png
PDB 2rcj EBI.png
PDB 3cx5 EBI.png
PDB 3cxh EBI.png
PDB 1eo8 EBI.jpg
PDB 1ezv EBI.jpg
PDB 1ar1 EBI.jpg
PDB 2h2p EBI.jpg
PDB 1otu EBI.jpg
PDB 1r3j EBI.jpg
PDB 1k4d EBI.jpg
PDB 1r3k EBI.jpg
PDB 1r0a EBI.jpg
PDB 1t03 EBI.jpg
PDB 1n5y EBI.jpg
Terms of Use   Search of the Day