shuttle

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shut·tle

(shŭt'ĕl),
A going back and forth regularly; used in respect to certain transport processes across a biomembrane.

shuttle

Space medicine
Any of the five—Columbia, Challenger, Discovery, Atlantis and Endeavour—reusable spacecraft that carried personnel and equipment into orbit, providing platform of the cutting-edge research critical in constructing the largest structure in space, the International Space Station. The first mission was launched in April 1981; the last space shuttle mission, STS-135, ended in July 2011.

shuttle

(shŭt′l)
To transport an object back and forth; in cell biology or biochemistry, to carry a molecule repeatedly across a cell membrane.

shuttle

the transport of electrons or organic groups across biological membranes.

shuttle system
means of transfer of reducing equivalents as NADH and H+ from the cytosol to mitochondria. The two main systems are: α-glycerophosphate shuttle and malate-aspartate shuttle.
References in periodicals archive ?
Selected MTA 161 buses will stop at Warner Center terminus of the Orange Line at four times daily on weekends and holidays, then connect with the ParkLINK shuttle at Las Virgenes and Agoura roads.
9-pound chunk of foam insulation broke off the side of the shuttle's external fuel tank but didn't appear to hit the shuttle.
Here is policy made tangible," MalcolmMcConnell writes on viewing the wreckage of the space shuttle Challenger, laid out on the floor of a giant hangar at Cape Canaveral.
So when traveling, whether a local resident or a visitor to Southern California, Prime Time Shuttle is the best transportation choice for getting to the airport, cruise ship terminal or rail station.
NASA plans to replace the space shuttle fleet with a new spacecraft, the Crew Exploration Vehicle.
The United States has lost 17 astronauts in space accidents, including two shuttle disasters 17 years apart.
For the shuttle blow molder, the question is whether the demand for IML justifies the investment of $50,000 to $200,000 in new labeling equipment and whether enough customers will pay for the higher tool costs, longer molding cycles, and possibly higher scrap rates associated with IML.
Along with the extensive support of these logistics missions, SPACEHAB is poised to undertake new flight opportunities aboard the space shuttle to support NASA in its remaining space station construction and maintenance activities.
EDWARDS AIR FORCE BASE - California space advocates will honor the NASA Dryden Flight Research Center for its 50th space shuttle landing and continued support of the nation's space program.
On average, there are only five shuttle flights per year.
NASA and subcontractors that provide critical hardware, software and services bestow the Space Flight Awareness Award on suppliers and employees who make significant contributions to the NASA Space Shuttle, Space Station or payload programs.