Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Resistin also known as adipose tissue-specific secretory factor (ADSF) or C/EBP-epsilon-regulated myeloid-specific secreted cysteine-rich protein (XCP1) is a cysteine-rich peptide hormone derived from adipose tissue that in humans is encoded by the RETN gene. 3D cartoon and Gaussian surface models, chain id color scheme, based on PDB 1rfx, white background
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.
Beta-amyloid (Abeta) peptide, 3D rendering. Major component of plaques found in Alzheimer's disease. Cartoon representation.
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.
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria.  Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
Molecular Model of Infliximab, or Remicade, a monoclonal antibody against tumour necrosis factor alpha (TNF-α), which is used to treat autoimmune diseases
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.
Recombinant human insulin. 3d cartoon model based on protein data bank
3D cartoon and Gaussian surface models, PDB 6vg8, white background
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 model of a protein molecule. The spatial oriented structure of the macromolecule.
Covid-19 Coronavirus Variants Omicron Delta Gamma Beta Alpha Pandemic Virus Disease Mutation
Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.
DNA A-T Pair
A new antibiotic (zosurabalpin, red) traps lipopolysaccharide (orange) in the intermembrane transporter of the Gram-negative bacterium Acinetobacter baylyi
Freshness capsule
3D cartoon and Gaussian surface models. PDB 2aai, white background.
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.
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.
Isolated Proteasome with protein conjugated with ubiquitin 3d rendering
Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.
Model of human Insulin, a hormone to regulate carbohydrate and fat metabolism
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.
3D Render of Rainbow Hearts Themed Font Plus Sign and Comma and Period
3D cartoon and Gaussian surface models, chain id color scheme, PDB 5y0m, white background
A ball and stick model of one of the proteins which form the fibres of spider's silk.
The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.
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.
Aromatase (estrogen synthase) enzyme. Protein responsible for the key step in the synthesis of estrogens. 3D illustration. Cartoon representation.
Molecular model of Thymine, 1 of 4 nucleobases to form DNA
Free Images: "bestof:PDB 2npt EBI.jpg Alpha and beta proteins a+b beta-Grasp ubiquitin-like CAD PB1 domains PB1 domain Mitogen activated protein kinase kinase 5 Map2k5 Alpha and"
PKARII.svg
Stat domain structure (zh-cn).svg
Complement pathway.svg
2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
PDB 2npt EBI.jpg
PDB 1wi0 EBI.jpg
PDB 2cu1 EBI.jpg
PDB 2c60 EBI.jpg
PDB 2o2v EBI.jpg
PDB 1wmh EBI.jpg
PDB 1vd2 EBI.jpg
PDB 1c9f EBI.jpg
PDB 1f2r EBI.jpg
PDB 1ibx EBI.jpg
PDB 1pqs EBI.jpg
PDB 1tz1 EBI.jpg
PDB 1q1o EBI.jpg
PDB 2bkf EBI.jpg
PDB 1wj6 EBI.jpg
PDB 1d4b EBI.jpg
PDB 1oey EBI.jpg
PDB 1ip9 EBI.jpg
PDB 1ipg EBI.jpg
PDB 1i35 EBI.jpg
PDB 1wxm EBI.jpg
PDB 2j0m EBI.png
PDB 1k8r EBI.jpg
PDB 1ukh EBI.jpg
PDB 1uki EBI.jpg
PDB 1s9i EBI.jpg
PDB 1s9j EBI.jpg
PDB 2p55 EBI.png
PDB 1hz6 EBI.jpg
PDB 1hz5 EBI.jpg
PDB 1k51 EBI.jpg
PDB 1k50 EBI.jpg
PDB 1kh0 EBI.jpg
PDB 1k52 EBI.jpg
PDB 1k53 EBI.jpg
PDB 2ptl EBI.jpg
PDB 1jml EBI.jpg
PDB 1f1h EBI.jpg
PDB 1lgr EBI.jpg
PDB 2lgs EBI.jpg
PDB 1f52 EBI.jpg
PDB 1fpy EBI.jpg
PDB 2gls EBI.jpg
PDB 2bvc EBI.jpg
PDB 1hto EBI.jpg
PDB 2v8q EBI.png
PDB 2v92 EBI.png
PDB 2v9j EBI.png
PDB 2qrd EBI.png
PDB 2qr1 EBI.png
PDB 2qrc EBI.png
PDB 2qre EBI.png
PDB 2ooy EBI.png
PDB 2oox EBI.png
PDB 1koa EBI.jpg
PDB 2qlv EBI.png
PDB 3cir EBI.png
PDB 1mg4 EBI.jpg
PDB 1mfw EBI.jpg
PDB 1uf0 EBI.jpg
PDB 2igd EBI.jpg
PDB 1igd EBI.jpg
PDB 1pgx EBI.jpg
PDB 1mhx EBI.jpg
PDB 1pgb EBI.jpg
PDB 1pga EBI.jpg
PDB 1mi0 EBI.jpg
PDB 1em7 EBI.jpg
PDB 1mvk EBI.jpg
PDB 3gb1 EBI.jpg
PDB 1p7e EBI.jpg
PDB 1p7f EBI.jpg
PDB 2oed EBI.jpg
PDB 1fcl EBI.jpg
PDB 1fd6 EBI.jpg
PDB 1gb4 EBI.jpg
PDB 2gb1 EBI.jpg
PDB 2igh EBI.jpg
PDB 1gb1 EBI.jpg
PDB 2igg EBI.jpg
PDB 1mpe EBI.jpg
PDB 2nmq EBI.jpg
PDB 2plp EBI.jpg
PDB 1q10 EBI.jpg
PDB 1nxk EBI.jpg
PDB 1ny3 EBI.jpg
PDB 1kwp EBI.jpg
PDB 1u46 EBI.jpg
PDB 1u4d EBI.jpg
PDB 1u54 EBI.jpg
PDB 1wj4 EBI.jpg
PDB 2cr5 EBI.jpg
PDB 1wfy EBI.jpg
PDB 1wgr EBI.jpg
PDB 2cs4 EBI.jpg
PDB 1v8c EBI.jpg
Terms of Use   Search of the Day