Stimulation of adenine nucleotide translocation in reconstituted vesicles by phosphate and the phosphate transporter

Howard G. Shertzer*, Baruch I. Kanner, Ranajit K. Banerjee, Efraim Racker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Highly purified adenine nucleotide transporter from bovine heart mitochondria was reconstituted with phospholipids to form vesicles which catalyzed atractyloside-sensitive adenine nucleotide translocation. When internal ATP was exchanged with external ADP, this reaction was enhanced by agents capable of collapsing a membrane potential, but not by inorganic phosphate. When the purified nucleotide transporter was reconstituted together with a second protein fraction, nucleotide transport was stimulated by inorganic phosphate. The stimulated rate was eliminated by mersalyl or other SH reagents. The second protein fraction could be replaced by preparations of purified phosphate transporter.

Original languageEnglish
Pages (from-to)779-784
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume75
Issue number3
DOIs
StatePublished - 11 Apr 1977
Externally publishedYes

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