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A metabolic futile cycle is operating in gas gland cells of the swimbladder.

Research Project

Project/Area Number 24657085
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Functional biochemistry
Research InstitutionTokyo Institute of Technology

Principal Investigator

HIROSE Shigehisa  東京工業大学, 大学院・生命理工学研究科, 教授 (10134199)

Project Period (FY) 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords酵素の調節 / 代謝調節 / ルート効果ヘモグロビン / 解糖系 / 乳酸輸送体 / Fructose bisphosphatase / 空転サイクル / 熱発生 / 対向流血管系 / ガス腺
Research Abstract

H+/monocarboxylate transporters MCT1b and MCT4b were found to be highly expressed in the fugu swimbladder. Immunohistochemical analyses of metabolic enzymes demonstrated that a gluconeogenesis enzyme fructose-1,6-bisphosphatase (Fbp1) and a glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (Gapdh) are highly expressed in gas gland cells. The simultaneous catalyses of glycolysis and gluconeogenesis reactions suggest the presence of a futile cycle in gas gland cells to maintain the levels of ATP low and to generate heat that helps reduce the solubility of O2

Report

(2 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • Research Products

    (2 results)

All 2012

All Journal Article (2 results) (of which Peer Reviewed: 2 results)

  • [Journal Article] O_2-filled swimbladder employs monocarboxylate transporters for the generation of O_2 by lactate-induced Root effect hemoglobin2012

    • Author(s)
      Umezawa T, Kato A, Ogoshi M, Ookata K, Doi H, Romero MF, Hirose S
    • Journal Title

      PLoS ONE

      Volume: 7 Issue: 4 Pages: e34579-e34579

    • DOI

      10.1371/journal.pone.0034579

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Histological demonstration of glucose transporters, fructose-1, 6-bisphosphatase, and glycogen in gas gland cells of the swimbladder : is a metabolic futile cycle operating2012

    • Author(s)
      Munakata K, Ookata K, Doi H, Baba O, Terashima T, Hirose S, Kato A.
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 417 Issue: 1 Pages: 564-9

    • DOI

      10.1016/j.bbrc.2011.12.006

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed

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Published: 2013-05-31   Modified: 2019-07-29  

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