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After dopamine binding, the dopamine receptor changes his shape and binds the inactive G protein.The G protein expels its GDP molecule replacing it by GTP. and falls into two pieces. The Galpha subunit binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.
Old tombstone from 1692 of a man that was hung during witch hunt in Salem
Nepali scriptures details from a buddhist bell in Kathmandu.
Ceramic plaque in the covered wash house in Cote D'Azur resort of Saint Tropez, known as Lavoir Vasserot - Laverot Wash House, after it's architect and creator and honorary citizen of Saint Tropez, Charles Albert Vasserot. It was built in 1861 - featuring three basins, one for coloured clothes, one for whites and one for rinsing. It is now a listed historic monument and used as a cultural space.
Close-up of hieroglyphics at the Karnak Temple Complex in Luxor
Byblos, Lebanon - August 15, 2014: Stand with information about the ancient ruins of the crusader castle of Byblos.
3D Fear and Greed Arch Index concept: Emotional stress factor in Stock Markets.  Crypto currency trading sentiment indicator. Investment risk psychology. Blockchain speculation. Price movements are unpredictable and risky. Blue arrow mowing between red Fear, yellow neutral and green Greed Index.
Solar radiation analysis of a public building. Multipurpose common public space analysis with parametric louvers to control sun exposure and radiation.
Paris, France: A marble plaque commemorating the 50th anniversary of the Marshall Plan. The plaque hangs on the wall of the Hotel de Talleyrand, a grand palace near the Place de la Concorde that belongs to the American Embassy in Paris.
Set of countdown numbers
Gisozi, Kigali, Rwanda: Rwandan Genocide memorial names wall - an estimated 500,000 to 1 million Tutsis (70% of the total population) and moderate Hutus were murdered over a 100-day period from April 7 to July 15, 1994. Most of the killings were committed by two Hutu militias, the Interahamwe, and the Impuzamugambi.
Gas laws of thermodynamics, the formula for the ratio of volumes and temperatures
directional signpost on the Lavezzi Islands off the coast of Corsica; Iles Lavezzi France
3D cartoon and Gaussian surface models, PDB 6gu2, white background
29 October Republic Day of Türkiye text on a red shiny sphere with a partial Turkish flag on white background. Easy to crop for all your print sizes and social media needs.
Acetylcholine receptors in the lipid layer of cell membrane.
Goal achievement and business success
Tbilisi, Georgia  15 October,2021 : Beautiful gigantic bas relief art structure of the Chronical of Georgia on the rainy day  15 October,2022 in Tbilisi , Georgia
The word SUCCESS handwritten in chalk
Centralised mechanical extraction system scheme, most commonly known as Mechanical Extraction Ventilation (MEV) for indoor air quality - concept image with architectural cross section and diagram of operation.
3D cartoon and Gaussian surface models with a putative membrane shown, PDB 4p02, white background
periodic table of elements 3d concept
St. Ives.Cornwall. UK- 10.01.2023. A memorial inscription of ship wrecks of the coast of St. Ives.
Goal achievement and business success concept on chalkboard
Fluconazole is an antifungal medication used to treat fungal infections like candidiasis and mycosis. Fluconazole alters the active site of the lanosterol 14 alpha-demethylase preventing the demethylation of lanosterol, an essential step in the biosynthesis of ergosterol. Ergosterol plays an important structural role in the regulation of membrane fluidity and permeability. Source: PDB entry 5esf.
Tagus Cove on Isabela Island in the Galapagos Islands has graffiti that has been carved into the rock walls by visitors over the past centuries; this happened just before the Galapagos National Park was established in 1959-1960.
Failure mode and effects analysis (FMEA)
The terrain of a cloudy plateau meadow
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