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Tritium (from Ancient Greek τρίτος (trítos) 'third') or hydrogen-3 (symbol T or 3 H) is a rare and radioactive isotope of hydrogen with a half-life of ~12.3 years. The tritium nucleus (t, sometimes called a triton) contains one proton and two neutrons, whereas the nucleus of the common isotope hydrogen-1 (protium) contains one proton and no neutrons, and that of non-radioactive hydrogen ...
The winged helix-turn-helix (wHTH) motif is formed by a 3-helical bundle and a 3- or 4-strand beta-sheet (wing). The topology of helices and strands in the wHTH motifs may vary. In the transcription factor ETS wHTH folds into a helix-turn-helix motif on a four-stranded anti-parallel beta-sheet scaffold arranged in the order α1-β1-β2-α2-α3 ...
Ammonium perchlorate ("AP") is an inorganic compound with the formula NH 4 ClO 4.It is a colorless or white solid that is soluble in water. It is a powerful oxidizer.Combined with a fuel, it can be used as a rocket propellant called ammonium perchlorate composite propellant.
Biochemistry or biological chemistry is the study of chemical processes within and relating to living organisms. [1] A sub-discipline of both chemistry and biology, biochemistry may be divided into three fields: structural biology, enzymology, and metabolism. Over the last decades of the 20th century, biochemistry has become successful at ...
The Biden administration on Tuesday announced new sanctions against Russians accused of producing a bogus video spreading sexual assault allegations against Democratic vice presidential candidate ...
The U.S. Capitol is seen at sunset on the eve of the first anniversary of the January 6, 2021 attack on the building, on Capitol Hill in Washington, U.S., January 5, 2022.
Clathrin is a protein that plays a role in the formation of coated vesicles.Clathrin was first isolated by Barbara Pearse in 1976. [1] It forms a triskelion shape composed of three clathrin heavy chains and three light chains.
President-elect Donald Trump on Monday shared a ruthless highlight reel of Democrats in denial over Joe Biden's cognitive decline after a veteran journalist slammed US media for not making it a ...