• than one protonation and are labeled polybasic, which is true of many biological macromolecules. Protonation and deprotonation (removal of a proton) occur...
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  • Thumbnail for Proton
    A proton is a stable subatomic particle, symbol p, H+, or 1H+ with a positive electric charge of +1 e (elementary charge). Its mass is slightly less than...
    68 KB (7,051 words) - 22:08, 11 May 2025
  • Thumbnail for Proton–proton chain
    The protonproton chain, also commonly referred to as the p–p chain, is one of two known sets of nuclear fusion reactions by which stars convert hydrogen...
    22 KB (2,221 words) - 01:46, 1 April 2025
  • Proton Holdings Berhad, commonly known as Proton (stylised PROTON), is a Malaysian multinational automotive company. Proton was established on 7 May 1983...
    163 KB (14,010 words) - 16:32, 30 May 2025
  • VPN, Proton Drive, Proton Calendar, Proton Pass and Proton Wallet. Proton AG is owned by the nonprofit Proton Foundation. Proton Mail uses client-side...
    40 KB (3,763 words) - 16:40, 10 May 2025
  • up proton in Wiktionary, the free dictionary. A proton is a subatomic particle. Proton may also refer to: Proton, the hydron ion (notated H+ ) Proton, hydronium...
    2 KB (335 words) - 10:28, 21 March 2025
  • Atomic number (redirect from Proton number)
    For ordinary nuclei composed of protons and neutrons, this is equal to the proton number (np) or the number of protons found in the nucleus of every atom...
    21 KB (2,620 words) - 21:54, 17 May 2025
  • Thumbnail for Proton (software)
    Proton is a compatibility layer that allows Windows software (primarily video games) to run on Linux-based operating systems. Proton is developed by Valve...
    13 KB (1,000 words) - 14:30, 19 May 2025
  • Proton AG is a Swiss technology company offering privacy-focused online services and software. It is majority owned by the non-profit Proton Foundation...
    22 KB (2,118 words) - 17:13, 1 June 2025
  • Thumbnail for Atom
    basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm...
    126 KB (12,995 words) - 03:03, 2 June 2025
  • Thumbnail for Proton pump
    A proton pump is an integral membrane protein pump that builds up a proton gradient across a biological membrane. Proton pumps catalyze the following reaction:...
    13 KB (1,530 words) - 02:16, 15 April 2025
  • The catalytically competent protonation state is the catalytically active protonation state of an enzyme. An enzyme is a protein, which catalyzes a chemical...
    2 KB (261 words) - 13:05, 7 January 2023
  • Proton VPN is a VPN service launched in 2017 and operated by the Swiss company Proton AG, the company behind the email service Proton Mail. According...
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  • Thumbnail for Proton Satria
    The Proton Satria is a hatchback automobile produced by Malaysian manufacturer Proton from 1994 to 2005 in the first generation model and from 2006 to...
    29 KB (3,043 words) - 11:17, 11 May 2025
  • Thumbnail for Proton-M
    The Proton-M, (Протон-М) GRAU index 8K82M or 8K82KM, is an expendable Russian heavy-lift launch vehicle derived from the Soviet-developed Proton. It is...
    28 KB (2,773 words) - 00:45, 23 March 2025
  • Thumbnail for Birch reduction
    originally argued that the protonation occurred at the meta position, subsequent investigation has revealed that protonation occurs at either the ortho...
    21 KB (2,179 words) - 16:29, 22 May 2025
  • Thumbnail for Proton Exora
    The Proton Exora is a discontinued automobile produced by the Malaysian car manufacturer Proton. Considered to be a compact multi-purpose vehicle (MPV)...
    54 KB (4,071 words) - 08:12, 26 April 2025
  • Thumbnail for Proton (rocket family)
    Proton (Russian: Протон, formal designation: UR-500) is an expendable launch system used for both commercial and Russian government space launches. The...
    26 KB (2,514 words) - 19:53, 21 December 2024
  • Thumbnail for Ion
    elemental ions such as a proton, H+, in neutral molecules. For example, when ammonia, NH3, accepts a proton, H+—a process called protonation—it forms the ammonium...
    31 KB (3,198 words) - 16:00, 28 May 2025
  • Thumbnail for Proton therapy
    In medicine, proton therapy, or proton radiotherapy, is a type of particle therapy that uses a beam of protons to irradiate diseased tissue, most often...
    78 KB (8,526 words) - 00:30, 23 May 2025
  • Thumbnail for Proton decay
    In particle physics, proton decay is a hypothetical form of particle decay in which the proton decays into lighter subatomic particles, such as a neutral...
    23 KB (2,555 words) - 23:37, 3 May 2025
  • Thumbnail for Proton Saga
    The Proton Saga is a series of subcompact cars and currently city cars produced by Malaysian automobile manufacturer Proton. Introduced in 1985, the Proton...
    38 KB (3,344 words) - 07:25, 28 April 2025
  • Proton R3 was the motorsport and performance division of the Malaysian automotive brand Proton. The name R3 is an abbreviation of "Race. Rally. Research"...
    23 KB (970 words) - 16:04, 7 April 2025
  • Thumbnail for Enol
    carbonyl group) often form enols. The reaction involves migration of a proton (H) from carbon to oxygen: RC(=O)CHR′R′′ ⇌ RC(OH)=CR′R′′ In the case of...
    14 KB (1,159 words) - 01:14, 13 March 2025
  • Thumbnail for Radical anion
    Addition of a proton source (even water) to a radical anion results in protonation, i.e. the sequence of reduction followed by protonation is equivalent...
    6 KB (717 words) - 00:03, 21 March 2025
  • quarks and gluons carry the spin of protons? More unsolved problems in physics The proton spin crisis (or proton spin puzzle) is a theoretical crisis...
    13 KB (1,142 words) - 06:03, 16 May 2025
  • Thumbnail for Proton Competition
    Proton Competition (also formerly racing as Dempsey-Proton Racing or Team Felbermayr-Proton) is a German auto racing team based in Ummendorf, Baden-Württemberg...
    56 KB (2,597 words) - 17:57, 24 April 2025
  • Thumbnail for Proton EMAS
    Proton EMAS is a range of concept cars designed by Italdesign Giugiaro and developed by Proton. It debuted at the 2010 Geneva Motor Show as a hybrid vehicle...
    5 KB (345 words) - 05:04, 5 March 2025
  • Proton Drive is an end-to-end encrypted, cloud-based file storage and synchronization service developed by Proton AG. Proton Drive enables storing files...
    12 KB (1,063 words) - 00:04, 30 March 2025
  • Thumbnail for Proton emission
    Proton emission (also known as proton radioactivity) is a rare type of radioactive decay in which a proton is ejected from a nucleus. Proton emission can...
    5 KB (478 words) - 23:39, 11 August 2024