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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.

$The three-dimensional structure of proteins is represented in a variety of conformations. This image is based on the ribbon structure of a protein. It is suitable for biology notebooks and book covers.\nThis image has not been created by AI.$

Gastric inhibitory polypeptide (GIP, glucose-dependent insulinotropic peptide) endocrine protein hormone. 3D illustration. Cartoon representation.

Molecular Model of Human Insulin with disulfide bonds shown.

Organic shape 3d virus model isolated on black background, medical 3d rendering illustration

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.

Borrelia burgdorferi is a spiral bacteria responsible for Borreliosis and transmitted by ticks. 3D Illustration

Drawing effect, Isolated on black background, marking, hand drawn, design elements, ink brush, direction

3D cartoon model, secondary structure color scheme, PDB 2ygt, white background

Beta-amyloid (Abeta) peptide, 3D rendering. Major component of plaques found in Alzheimer's disease. Cartoon representation.

Bone morphogenetic protein 1, a protein which induces bone and cartilage development. 3d rendering.

Recombinant human insulin. 3d cartoon model based on protein data bank

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.

$Ghrelin (or lenomorelin, INN) is a hormone produced by enteroendocrine cells of the gastrointestinal tract, especially the stomach, and is often called a \$

$Phospholipid bilayer membrane structures that make up living cells and their contents. This is an image of membrane proteins in the membrane.\nThis image, which looks like a plastic model, evokes biology and biochemistry. It can be used as a cover for magazines, textbooks and presentation materials.\nThis image was not created by AI.$

Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.

$Model of DNA Base Pair adenine (A) and thymine (T)\n\nFind more molecules in the Lightbox [url=http://www.istockphoto.com/search/lightbox/7500191][i] 'World of Molecules'[/i][/url], or contact me on customized design/rendering of any molecules in 3D (see some examples below). \n\n[img]http://www.drugmodel.com/360/superglassy900.jpg[/img] \n[img]http://www.drugmodel.com/360/capsule900.jpg[/img] \n[img]http://www.drugmodel.com/360/glassy900.jpg[/img] \n[img]http://www.drugmodel.com/360/heart900.jpg[/img] \n[img]http://www.drugmodel.com/360/viruskiller900.jpg[/img] \n[img]http://www.drugmodel.com/360/mesh900.jpg[/img] \n[img]http://www.drugmodel.com/360/cartoon900.jpg[/img] \n[img]http://www.drugmodel.com/360/photo900.jpg[/img] \n[img]http://www.drugmodel.com/360/ovoid900.jpg[/img] \n[img]http://www.drugmodel.com/360/swirlcone900.jpg[/img] \n[img]http://www.drugmodel.com/360/super900.jpg[/img] \n[img]http://www.drugmodel.com/360/glowing900.jpg[/img]$

Computer illustration of Brugia malayi a parasitic nematode worm and cause of human lymphatic filariasis (elephantiasis). Brugia malayi is one of five types of nematode worm which cause human filariasis. They are spread by blood- sucking insects. The worms then invade the human lymphatic system to produce thousands of larvae that spread around the body. Repeated infection causes lymph vessels to become inflamed and fluid to accumulate, which can lead to an enormous enlargement of parts of the body (elephantiasis). Treatment is usually with anthelmintic drugs.

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.

HER3 belongs to the Epidermal Growth Factor Receptor (EGFR) family. It plays a crucial role in cellular proliferation, survival, and differentiation via the PI3K/Akt, MAPK, and JAK/STAT signaling pathways.

3D cartoon model, secondary structure color scheme, PDB 1ekg, white background

X chromosome with degrading or aging telomeres isolated on white background

Segment of human collagen isolated on a white background

Blue connected molecules on white background. Horizontal composition with copy space.

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.

plant Cotton Leaf C.S. under light mircoscope with white background

Free Images: "bestof:Beta hairpin.png cartoon representation of the beta hairpin of the syrian hamster prion protein Graphical representation from the program MolMol rendered with"

2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg