Photosynthesis Research

, Volume 139, Issue 1–3, pp 325–335 | Cite as

Characterization of ABC transporter genes, sll1180, sll1181, and slr1270, involved in acid stress tolerance of Synechocystis sp. PCC 6803

  • Junji UchiyamaEmail author
  • Ayako Itagaki
  • Haruna Ishikawa
  • Yu Tanaka
  • Hidetaka Kohga
  • Ayami Nakahara
  • Akiko Imaida
  • Hiroko Tahara
  • Hisataka Ohta
Original Article


Over 50 ATP-binding cassette (ABC) transporter-related genes are detected in the Synechocystis sp. PCC 6803 genome by genome sequence analysis. Deletion mutants of other substrate-unknown ABC transporter genes were screened for their acid stress sensitivities in a low-pH medium to identify ABC transporters involved in acid resistance. We found that a mutant of sll1180 encoding proteins with homology to HlyB in Escherichia coli (E.coli) is more sensitive to acid stress than wild-type (WT) cells and analyzed the abundance of expression of the genes in WT cells under acid stress condition by quantitative real-time reverse transcriptase-polymerase chain reaction. sll1180 expression increased in the WT cells after acid stress treatment. Immunofluorescence revealed that Sll1180 localized in the plasma membrane. These results suggest that Sll1180 has an important role in the growth of Synechocystis sp. PCC 6803 under acid stress conditions. HlyB, HlyD, and TolC complex transport HlyA in E.coli; therefore, we searched for genes corresponding to these in Synechocystis sp. PCC 6803. A BlastP search suggested that HlyA, HlyD, and TolC proteins had homology to Sll1951, Sll1181, and Slr1270. Therefore, we constructed deletion mutant of these genes. sll1181 and slr1270 mutant cells revealed acid stress sensitivity. The bacterial two-hybrid analysis showed that Sll1180 interacted with Sll1181 and Sll1951. Dot blot analysis of Sll1951-His revealed that the sll1180 and sll1181 mutant cells did not transport Sll1951-His from the cytoplasm to the extracellular matrix. These results suggest that Sll1180 and Sll1181 transport Sll1951 and that Sll1951—outside of the cells—might be a key factor in acid stress tolerance.


Sll1180 ABC transporter Low-pH Stress response 



ATP-binding cassette


Bacterial two hybrid

E. coli

Escherichia coli


Quantitative reverse transcription-polymerase chain reaction


Room temperature


Sodium dodecyl sulfate polyacrylamide gel electrophoresis

Synechocystis 6803

Synechocystis sp. PCC 6803


Trichloroacetic acid


Wild type



This study was supported by the Program for Development of Strategic Research Center in Private Universities, which was supported by MEXT.

Supplementary material

11120_2018_548_MOESM1_ESM.docx (17 kb)
Supplementary material 1 (DOCX 17 KB)


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  • Junji Uchiyama
    • 1
    Email author
  • Ayako Itagaki
    • 2
  • Haruna Ishikawa
    • 2
  • Yu Tanaka
    • 2
  • Hidetaka Kohga
    • 3
  • Ayami Nakahara
    • 3
  • Akiko Imaida
    • 3
  • Hiroko Tahara
    • 2
  • Hisataka Ohta
    • 1
    • 2
    • 3
  1. 1.Department of Biology, Faculty of ScienceTokyo University of ScienceTokyoJapan
  2. 2.Department of Mathematics and Science Education, Graduate School of Mathematics and Science EducationTokyo University of ScienceTokyoJapan
  3. 3.Department of Mathematics and Science Education, Graduate School of ScienceTokyo University of ScienceTokyoJapan

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