ping-pong mechanism

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ping-pong mech·a·nism

a special multisubstrate reaction in which, for a two-substrate, two-product (that is, bi-bi) system, an enzyme reacts with one substrate to form a product and a modified enzyme, the latter then reacting with a second substrate to form a second, final product, and regenerating the original enzyme. An example of such a mechanism is found in the aminotransferases. More complex ping-pong mechanisms exist for enzymes having more than two substrates.
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Liverpool's Lord Mayor, Cllr Tony Concepcion, who was due to try his skills against a ping-pong robot which fires out endless balls, said: "Ping
Ping-pong is by far not about hitting a ball to and fro.
RAY: Imagine you hung a bunch of ping-pong balls from the ceiling in your garage to simulate a moment of a rain storm that's been frozen in time.
In his off-beat and engrossing new book, Ping-Pong Diplomacy, journalist Nicholas Griffin chronicles the history of table tennis from its birth through its role in the Nixon era detente and shows how the game has been inherently and intentionally political from it's earliest days.
What's nice about this is, after I did 'Atlantic City', people started sending me lemons, and now they're sending me Ping-Pong tables which are much more interesting
We love Ping-Pong and wanted to bring this unique concept to the Middle East.
Mark French, a mechanical engineer at the university, and his graduate students Craig Zehrung and Jim Stratton, have shown off their customised ping-pong gun that can fire the balls at a speed of more than 400metres a second, or about Mach 1.
And Klitschko, 40, revealed: "To help reflexes, I work with table tennis balls and I enjoy playing ping-pong.
According to Kazm Khazal, head of the Iraqi Ping-Pong Federation (IPPF), Erbil will host an international ping-pong competition on January 26-29.
The game also received a boost from ping-pong loving celebrities like Damon Albarn, the frontman of British band Blur, and Hollywood actress Susan Sarandon.
STANISLAS WAWRINKA may play second fiddle to Roger Federer in the Swiss tennis rankings but he's better at one sport - ping-pong.
SIR - Much is being made, following the ELVs (Experimental Law Variations), of ping-pong rugby.