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Proteasomes are a large molecular machine that degrade unneeded or damaged proteins that have been tagged with polyubiquitin (yellow). The ubiquitin hydrolase (violet) detaches ubiquitin from the protein, that is unfolded and degraded into small peptides (bottom). Source: PDB entry 5GJQ

3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen

Science background with molecule or atom

Molecule with biology and chemical concept, 3d rendering. Digital drawing.

alien structure made of white spheres and flowing glass liquid, molecular, hi-tech concept, abstract design element

Close up of a Petri dish with blue specimens in it

Monosodium glutamate, MSG or sodium glutamate molecules. MSG is used in cooking as a flavor enhancer with an umami taste 3d rendering

3D cartoon and Gaussian surface models, PDB 4bci, 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.

Gamma secretase protein complex. Multi-subunit intramembrane protease that plays role in processing of proteins. 3D illustration.

bauxite is a natural mixture of aluminum oxides. Used in the production of alumina, cement and other industrial products

Various legumes, top view with beige background

The NEK-7 independent NLRP3 inflammasome in it's hexameric conformation with ADP (red) bound. Inflammasomes are a promising target for the treatment of autoimmune diseases. PDB entry: 7zgu.

Tryptophan or Trp is an alpha-amino acid that is used in the biosynthesis of proteins, 3d illustration

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3D cartoon and Gaussian surface models, PDB 7s03, white background

A model of a transcription factor binding to a strand of DNA. Transcription factors are proteins which bind to specific sequences of DNA, enabling and controlling the copying of genetic data.

clear gel drops in petri dish isolated on white background. Cosmetic laboratory research, medical or science test concept.

3d rendering of benzene molecules conjugated gold (Au) nanoparticles (NPs) on the black background

This computer-generated image vividly illustrates the invasive Group A Streptococcal bacteria, as they would appear under a microscope. This visual representation helps to understand the microscopic world of Group A Streptococcus and its potential to cause serious diseases.

Ball and stick 3D render of the caffeine molecular structure.

Fresh coriander seeds, seasoning on a white wooden table top kitchen or restaurant table, in a bright daylight positive atmosphere, macro view with a copy space

Proliferating cell nuclear antigen (PCNA) is a DNA clamp that acts as a processivity factor for DNA polymerase δ in eukaryotic cells and is essential for replication. PCNA is a homotrimer and achieves its processivity by encircling the DNA, where it acts as a scaffold to recruit proteins involved in DNA replication, DNA repair, chromatin remodeling and epigenetics. 3D cartoon and Gaussian surface models, chain instance color scheme, based on PDB 3wgw, white background.

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Ernest Meissonier by RJ Bingham ca 1860-75b.jpg

Portret van Jan van Huysum Rijksmuseum SK-A-5008.jpeg.jpg

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

Kaufmann-Seated_woman_with_fan-The_banker's_wife.jpg

Graham's Hierarchy of Disagreement-es.svg

William-Adolphe_Bouguereau_(1825-1905)_-_Le_saintes_femmes_au_tombeau_(1890)_img_2.jpg

DJIA historical graph (log)-2008-29-10.svg

José Justiniani Ramírez de Arellano, marqués de Peñaflorida, alcalde de Madrid.JPG

Memorieportret van Moses ter Borch Rijksmuseum SK-A-4908.jpeg

Carl_Christian_Vogel_von_Vogelstein_-_Junge_Dame_mit_Zeichengerät.jpg

De_aanvaarding_van_het_Hoog_Bewind_door_het_Driemanschap_in_naam_van_de_prins_van_Oranje,_21_november_1813_Rijksmuseum_SK-A-1558.jpeg

Anna_Ermolova_with_children_by_Zakharov-Chechenets_(1840,_priv.coll).jpg

Anna_Alma-Tadema_-_Sir_Lawrence_Alma-Tadema's_Library_in_Townshend_House,_London_-_Google_Art_Project.jpg

Joseph_P._Emery_-_Sample_plate_-_Google_Art_Project.jpg

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Leptodirus hohenwarti distribution german.svg

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Window function and frequency response - Rectangular.svg