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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Compared to the afore-mentioned racket sports, ping-pong won't provide casual players as vigorous a physical workout, but it has been touted as an excellent game for your brain.
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.
Hereby, we do not request or ask, but we strongly demand the management of the fair, at the next event, to set aside a day exclusively for men so that we too can shop sans tension of being turned into ping-pong balls!
The Chinese PR machine thought of Ping-Pong as the "perfect instrument of Communist propaganda," and, Nicholas Griffin points out, "Nixon would be standing for re-election in 1972.
Joking that if you were to Google her name, her association with Ping-Pong would probably register higher than her Academy Awards or anything she's 'ever gotten in trouble for', Susan Sarandon has played the sport with a variety of stars.
The 12,000 sqft venue will feature 11 designer Ping-Pong tables, a bar, lounge and nightclub all serving a fusion of international cuisines, cocktails and other drinks.
She wrote in her column that as she is back from her Alpine challenges, she can pursue less demanding hobbies in her spare time, like ping-pong.
VITALI KLITSCHKO will tune up for what he hopes will be a Brit-bashing 2012 - by playing ping-pong.
Summary: MONACO: Rivals North and South Korea and India and Pakistan are among 10 nations competing in the latest version of "ping-pong diplomacy," but Iran has backed out of a chance to compete alongside American players.
The new trend of ping-pong clubs has hit South Florida, with new locations opening up in Boca Raton and Miami Beach.