Iron regulates hexose transporters in Schizosaccharomyces pombe


Ozkan E., Kartal B. , Yilmazer M. , Palabiyik B.

JOURNAL OF BASIC MICROBIOLOGY, vol.59, no.5, pp.458-464, 2019 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 59 Issue: 5
  • Publication Date: 2019
  • Doi Number: 10.1002/jobm.201800618
  • Title of Journal : JOURNAL OF BASIC MICROBIOLOGY
  • Page Numbers: pp.458-464

Abstract

This study focuses on the effect of iron on hexose transporters which perform glucose uptake. For this aim, we investigated the role of iron in glucose utilization and expression of hexose transporters in Schizosaccharomyces pombe. We applied different iron concentrations (1, 2, 5, 10mM) to the cells grown up to mid-logarithmic phase. According to analysis of cell viability and morphology, we determined 2mM and 5mM as non-toxic and toxic doses, respectively. Besides, glucose consumption efficiency increased (1.5-fold) in the cells which were exposed to these iron concentrations. qRT-PCR analysis of hexose transporter genes showed that the expression of ght2 and ght8 genes were downregulated under both non-toxic and toxic iron conditions, but that of ght5 gene was significantly decreased only by toxic iron dose. In conclusion, it was suggested for the first time in this study that the Ght5 protein, as being high affinity hexose transporter, might play a role in sensing and signaling of iron stress.