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Nirmatrelvir inhibits the 3C-like protease of the SARS-CoV 2 virus. The coronavirus 3CL hydrolase enzyme, also known as the main protease, is essential for the maturation of the virus.
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. Hologram view. SEM.
3D cartoon and Gaussian surface models, PDB 6vg8, white background
Molecular Model of Human Insulin with disulfide bonds shown.
Botulinum toxin neurotoxic protein, 3D rendering. Produced by Clostridium botulinum. Cosmetically used to treat wrinkles.
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.
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
Isolated Proteasome with protein conjugated with ubiquitin 3d rendering
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria.  Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
Segment of human collagen isolated on a white background
3D cartoon and Gaussian surface models. PDB 3kqg, chain id color scheme, white background.
Molecular Model of Human Insulin with disulfide bonds shown.
c-Myc and Max transcription factors bound to DNA. 3D illustration. Atoms shown as spheres with conventional color coding.
A ball and stick + ribbons model of HIV protease - an enzyme that is the target of much AIDS and HIV research.
The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.
Protein 3D model isolated on white
Aztreonam (left, orange) inhibits the beta-lactamase from Acinetobacter species. Avibactam (red) inhibits the beta-lactamase (blue) of Clostridioides difficile.
Calcium-binding atopy-related autoantigen 1, a protein that in humans is encoded by the CBARA1 gene.  A calcium binding atopy-related autoantigen. 3d rendering.
3D cartoon and Gaussian surface models, PDB 3hg3, white background
DNA A-T Pair
Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.
A ball and stick model of one of the proteins which form the fibres of spider's silk.
The structure of the protein molecule, tumor marker glioblastoma. X-ray crystalline model of the protein encoded by the MELK gene. 3D rendering.
Confocal microscopy imaging of two cancer cells touching each other. Cytoskeletal protein actin in red, nucleus in blue.
Epidermal growth factor (EGF) activates the EGF receptor (EGFR), that builds a heterodimer with HER3.  The signal transduction continues through GRB2/SOS, Ras,  Raf/MEK and ERK, that will activate many processes in the cell. Dysregulation is linked to cancer progression
Taq polymerase PCR enzyme: a heat-stable DNA polymerase protein that is the key component that makes the polymerase chain reaction (PCR) possible, which is essential for DNA cloning and sequencing
3D cartoon and Gaussian surface models, chain id color scheme, PDB 4ci9, white background
Molecular Model of Cetuximab or Erbitux, an epidermal growth factor receptor (EGFR) inhibitor, which is used for the treatment of metastatic colorectal cancer and head and neck cancer.
Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.
A ball and stick + ribbons model of a protein of the bacterium Vibrio Cholerae, responsible for Epidemic Cholera in humans.
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