Molecular characterization of an Arabidopsis thaliana cDNA encoding a novel putative adenylate translocator of higher plants.

Abstract

We have isolated an Arabidopsis thaliana cDNA encoding a highly hydrophobic membrane protein of 589 amino acids which contains 12 potential transmembrane helices and shows a high degree of similarity (43.5% identity, 66.2% similarity) to the ATP/ADP translocase of the Gram-negative bacterium Rickettsia prowazekii, an obligate intracellular parasite responsible for the epidemic typhus. This rickettsial translocator resides in the cytoplasmic membrane and allows the bacterium to exploit the host cytoplasmic ATP pool. We hypothesize that the A. thaliana homolog of the R. prowazekii ATP/ADP translocase is the functional eukaryotic equivalent and resides in the plastid inner envelope membrane where it functions as an ATP importer.

• Authors: K Kampfenkel, T Möhlmann, O Batz, M Van Montagu, D Inzé, H E Neuhaus
• Journal: FEBS letters (FEBS Lett) Vol. 374 Issue 3 Pg. 351-5 (Nov 06 1995) ISSN: 0014-5793 [Print] England
• PMID: 7589569 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• DNA, Complementary
• Membrane Proteins
• Mitochondrial ADP, ATP Translocases

Topics

• Arabidopsis (genetics)
• Base Sequence
• Blotting, Northern
• Blotting, Southern
• DNA, Complementary (chemistry, isolation & purification)
• Membrane Proteins (genetics)
• Mitochondrial ADP, ATP Translocases (chemistry, genetics)
• Molecular Sequence Data
• Rickettsia prowazekii (enzymology)
• Sequence Alignment
• Sequence Analysis, DNA