ATP

Organic compound, substrate in many enzyme-catalyzed reactions (see catalysis) in the cells of animals, plants, and microorganisms. ATP's chemical bonds (see bonding) store a large amount of chemical energy. ATP therefore functions as the carrier of chemical energy from energy-yielding oxidation (see oxidation-reduction) of food to energy-demanding cellular processes. Three such processes of metabolism are sources of ATP and stored energy: fermentation, the tricarboxylic acid cycle, and cellular respiration (also called oxidative phosphorylation). All form ATP from adenosine monophosphate (AMP) or adenosine diphosphate (ADP) and inorganic phosphate. When the reaction goes in the other direction, ATP is broken down to ADP or AMP and phosphate, and the released energy is used to perform chemical, electrical, or osmotic work for the cell.

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Chemistry/Biochemistry

• Adenosine triphosphate, the main energy storage and transfer molecule in the cell.

Companies

• Alberta Theatre Projects, a major Canadian theatre company.
• Associated Talking Pictures, a British film company which later became Ealing Studios
• BAe ATP, the British Aerospace ATP
• ATP Bonding Systems, a British technology company specialising in adhesives.
• ATP Flash Cards, American memory card manufacturer known for weatherproof memory
• ATP Oil and Gas, an oil and gas company

Organizations

• Academic Talent Program
• Armenia Tree Project
• Association of Test Publishers
• Association of Tennis Professionals, professional men's tennis association
• Advanced Training Program, Youth soccer training program
• Anti-Trident Party, Scottish political party
• Authority to Proceed, usually issued by Governmental or Law enforcement organisations.
• ATP Flight School

Professions/Credentials

• Airline Transport Pilot License
• Assistive Technology Practitioner
• Assistant technique en pharmacie (Québec)

Technologies

• AppleTalk Transaction Protocol
• Automated theorem proving
• Automatic Train Protection
• Acquisition, tracking and pointing
• Anti-Tachycardia Pacing (see Implantable cardioverter-defibrillator)
• Asynchronous Transfer Protocol (telecommunications)

Semiconductor Manufacturing

• Assembly, Test and Packaging

Other

• Flight Assignment: A.T.P., an MS-DOS game
• Australian Technology Park, located on the former Eveleigh railway workshops, Redfern NSW Australia
• "All Tomorrow's Parties", a song by The Velvet Underground, released in 1967 on the album The Velvet Underground and Nico. The following are named after this song:
• All Tomorrow's Parties, a novel in The Bridge trilogy by William Gibson
• All Tomorrow's Parties, a music festival.
• ATP Recordings, a record label affiliated with the above festival.
• Accepted Test Plan
• Accession Time Period
• Addressee To Pay
• Adult Treatment Panel, guidelines for patients with high cholesterol
• Advanced Technology Product, a nomenclatur for the trade of high-tech goods
• Advanced Technology Program, a U.S. Government grants program
• , a supplementary (income-related) pension in Sweden.
• Arbejdsmarkedets Tillaegspension, a supplementary (income-related) pension in Denmark
• Available-to-promise
• Ask Them Personally