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Ion Pump
(redirected from Ion transporter)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.
ion pump [′ī‚än ‚pəmp]
(electronics)
A vacuum pump in which gas molecules are first ionized by electrons that have been generated by a high voltage and are spiraling in a high-intensity magnetic field, and the molecules are then attracted to a cathode, or propelled by electrodes into an auxiliary pump or an ion trap.

Ion Pump 

a vacuum pump in which the scavenged gas is subjected to intense ionization and the positively charged ions that form are removed by an electric field. Ion pumps create a vacuum of 10-4 newtons per sq m, or 10-6 mm of mercury.



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Nobody, however, knew its evolutionary origin and much confusion surrounds its physiological function," said principal investigator Gerold Schmitt-Ulms (Centre for Research in Neurodegenerative Diseases; Department of Laboratory Medicine and Pathobiology, U of T) The team's analysis suggests that the prion gene is descended from the more ancient ZIP family of metal ion transporters.
BASF Plant Science GmbH (Ludwigshafen, Germany) has patented a transgenic plant transformed by an Ion Transporter Stress-Related Polypeptide (ITSRP) coding nucleic acid, wherein expression of the nucleic acid sequence in the plant results in increased tolerance to environmental stress as compared to a wild type variety of the plant.
A third gene isolated by the team, SHST3, encoded a low-affinity sulfate ion transporter.
 
 
 
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