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.
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.
3D cartoon and Gaussian surface models. PDB 3kqg, chain id color scheme, white background.
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.
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.
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.
c-Myc and Max transcription factors bound to DNA. 3D illustration. Atoms shown as spheres with conventional color coding.
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.
X chromosome with degrading or aging telomeres isolated on white background
C-fos-induced growth factor, a vascular endothelial growth factor. The protein encoded by this gene is a member of the PDGF/VEGF family. 3d rendering.
chromosome,Human genome concept
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
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.
The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.
3D realistically coloured hexagonal shapes of connected spheres, background with copy space. Futuristic illustration design template for scientific presentation. Molecular business, science, teamwork concept.
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
Abstract Genetics Disease - 3d rendered image.
Aromatase (estrogen synthase) enzyme. Protein responsible for the key step in the synthesis of estrogens. 3D illustration. Cartoon representation.
Freshness capsule
3D cartoon model, secondary structure color scheme, PDB 2ygt, 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.
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 3d Colorful Background
HER2 (light blue) and HER3 form a potent pro-oncogenic heterocomplex.  They play a  crucial role in cellular proliferation, survival, and differentiation.
DNA A-T Pair
Beta-amyloid (Abeta) peptide, 3D rendering. Major component of plaques found in Alzheimer's disease. Cartoon representation.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
Abstract geometric shape
Free Images: "bestof:PDB 1blx EBI.jpg Alpha and beta proteins a+b beta-hairpin-alpha-hairpin repeat Ankyrin repeat Ankyrin repeat Cell cycle inhibitor p19ink4D Alpha and beta"
UnitCell.svg
Triangle-right-abchpq.svg
Beta alpha approx.svg
Alpha beta.svg
circle-repeat-cycle-reload-redo-311551.svg
17-alpha- vs 17-beta-estradiol.svg
Resolve triangle with c alpha beta.svg
Cysten a-b eliminierung.svg
Maltulose.svg
Glucose numbering.svg
Gulose.svg
Ergoloid skeletal.svg
Ergotoxine skeletal.svg
1,2-, 1,3- & 1,4-Tropolone.svg
Ferrier carbocyclization 2.svg
Mannose structure.svg
Imperialine.svg
PainleveTypeIII.svg
Rete.svg
Alpha-methylstyrol.svg
SilylEnolEtherFromHydrosilylation.svg
Constant-k Filter Transmission Parameters.svg
Avoparcins.svg
Alpha-cedrene skeletal.svg
Beta-cedrene skeletal.svg
Picture Graph.svg
Triangle-law-of-sines-2.svg
NFA regexp concat.svg
NFA regexp sum.svg
Equilateral pentagons plot.svg
Ketocarboxylic Acids General Formulae V.1.svg
Tabtoxin.svg
Tabtoxinine beta-lactam.svg
(S)-Acetolactic acid.svg
Acetolactic acid.svg
Fixed-points theory and variance minimization (dynamic vibration absorber) (SVG).svg
Triangle-law-of-sines.svg
William_Louis_Sonntag_-_Landscape.jpg
creative-recycle-sign-refresh-reuse-1542023.svg
Arotinolol.svg
Constant-k Filter Gain with Multiple Half-Sections.svg
Integrality of root systems.svg
Raumzeigerdarstellung.svg
Comparison of properly and improperly scaled picture graph.svg
Improperly scaled picture graph.svg
Equilateral pentagon triangulated.SVG
Ferrier carbocyclization.svg
Ferrier carbocyclization mech.svg
Amnioacids amine gpt position.svg
turn-spiral-spire-whorl-curl-749026.png
Chaucer Astrolabe (Rete).svg
3 phase AC waveform.svg
Okuns law with confidence bands.svg
Error centring.svg
Dirichlet process draws.svg
S-R-processes-atomic-mass-201-to-210.svg
turn-spiral-spire-whorl-curl-730512.jpg
turn-spiral-spire-whorl-curl-730511.jpg
turn-spiral-spire-whorl-curl-730514.jpg
turn-spiral-spire-whorl-curl-730515.jpg
turn-spiral-spire-whorl-curl-730518.jpg
turn-spiral-spire-whorl-curl-730508.jpg
turn-spiral-spire-whorl-curl-730510.jpg
Landscape_by_William_Louis_Sonntag,_after_1857,_oil_on_canvas_-_Chazen_Museum_of_Art_-_DSC02158.JPG
Equilateral pentagon.SVG
M-Derived Low-pass Transfer Function (1 Half-section).svg
Mm'-Type Low-pass Transfer Function (1 Half-section).svg
Sinussatz.svg
2-bromo-1-phenylethanone 200.svg
星象图.svg
Stability region for BDF1.svg
4-hydroxy-3-(3-oxo-1-phenylbutyl)-2H-chromen-2-one 200.svg
Psychoacoustical tuning curves.svg
(S)-2-aminobutanoic acid 200.svg
2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
Kt arbre epaule torsion.svg
Kt arbre epaule traction.svg
Reserpine 200.svg
Kt arbre epaule flexion.svg
2-butoxy-N-(2-(diethylamino)ethyl)quinoline-4-carboxamide 200.svg
Conjugate gradient illustration.svg
Notable mutations.svg
Civil Air Ensign of Australia.svg
@marcelosilksantos_-_vector-estampa-camiseta-vetor-em-corel-draw-vetorizao-imagens-vetorizadas-silk-screen-serigrafia-branco-e-preto-FORMANDOS-_TERCEIRÃO-_COREL-_(119).jpg
PDB 1blx EBI.jpg
PDB 1bd8 EBI.jpg
PDB 1bi8 EBI.jpg
PDB 1bi7 EBI.jpg
PDB 1a5e EBI.jpg
PDB 1dc2 EBI.jpg
PDB 2a5e EBI.jpg
PDB 1ap7 EBI.jpg
PDB 1k1a EBI.jpg
PDB 1myo EBI.jpg
PDB 1sw6 EBI.jpg
PDB 1uoh EBI.jpg
PDB 1tr4 EBI.jpg
PDB 1wg0 EBI.jpg
PDB 1wdy EBI.jpg
PDB 2dzn EBI.png
Terms of Use   Search of the Day