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A mass spectrometry based functional assay for the quantitative assessment of ABC transporter activity

Mária Katona1, Katalin Kiss, Vilmos Angyal

  • 1Institute of Enzymology, Hungarian Academy of Sciences, H-1113 Budapest, Hungary.

Rapid Communications in Mass Spectrometry : RCM
|September 26, 2009
PubMed

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ATP-binding cassette or ABC transporter is the largest superfamily of integral membrane proteins. The transporters have transmembrane-binding domains (TMDs) and nucleotide-binding domains (NBDs). The TMDs are specific to their substrates, whereas the NBDs are similar to engines that complete ATP hydrolysis to complete the substrate transport. They can be full transporters consisting of two TMDs and NBDs, half transporters with one TMD and NBD, while some encoded with a single TMD or NBD are...
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ATP-binding cassette or ABC transporters are a class of ATP-driven pumps that hydrolyze ATP to move solutes across the membrane. They can be grouped into importers and exporters. While exporters are present in all domains of life, importers exist only in bacteria and some plants.
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