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Primary and Gene Structures and Defect of Pyruvate Dehydrogenase (Thiamin pyrophosphate enzyme)

Research Project

Project/Area Number 61570143
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Pathological medical chemistry
Research InstitutionNagasaki University

Principal Investigator

KOIKE Kichiko  Nagasaki University School of Medicine ・ Associate Professor, 医学部, 助教授 (80039619)

Co-Investigator(Kenkyū-buntansha) YANAGITA Yutaka  Nagasaki University School of Medicine ・ Instructor, 医学部, 助手 (80191162)
URATA Yoshishige  Nagasaki University School of Medicine ・ Instructor, 医学部, 助手 (30185087)
KOIKE Masahiko  Nagasaki University School of Medicine ・ Professor, 医学部, 教授 (10039521)
Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1987: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1986: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsThiamin Pyrophosphate-dependent Enzyme / <lambda>gt11 Expression Screening / Colony Hybridization / クローニング / 塩基配列 / アミノ酸配列 / α, βmRNA / α, βゲノムDNA / 【α_2】【β_2】構造 / 攻α,β家兎抗体 / 遺伝子(cDNA)
Research Abstract

Pyruvate dehydrogenase (PDH) is one of the component enzymes of PDH multienzyme complex, requires thiamin pyrophosphate, and is composed of two 41KDa subunit (PDH<alpha> and two 36KDa subunit (PDH<beta>) in <alpha>_2<beta>_2 form with Mr 153,000.
1. Porcine PDH was isolated from PDH complex by a single HPLC and separated into two subunits by HPLC. Antisera against porcine PDH<alpha> and <beta> were raised in rabbit and cross-reacted with human subunits.
2. Human PDH<alpha> and <beta> cDNA fragments were isolated from a HeLa cell library in <lambda>gt11 vector by immunoscreening and the full-length cDNAs were isolated from human foreskin fibrablast cDNA library by colony hybridization with phage cDNAs.
3. Nucleotide sequence analyses of plasmid clones (pHPDA, pHPDB) revealed an insert of 1.36kb for PDH<alpha> and 1.69kb for PDH<beta>, respectively. A putative leader sequence of 29 amino acid residues was identified in pHPDA, resulting in a precursor of 369 residues (MR 43,414) and a mature protein of 363 residues (Mr 40,334). A similar leader sequence of 30 amino acid residues in pHPDB was also identified resulting in a precursor of 359 residues (Mr 39,046) and a mature protein of 329 residues (Mr 35,911). The amino acid sequences around NH_2-termini of two subunits of the human and porcine PDHs were highly homologous. The sequences around the three phosphorylation sites determined in PDH<alpha> of bovine and porcine enzymes were also conserved.
4. Blot analysis of HeLa cell poly (A)^+ RNA showed single mRNA of 1.8kb for PDH<alpha> and 1.7 kb for PDH<beta>, respectively. The precursor of PDH<alpha> and <beta> were detected by immunoprecipitation from an ^<35>S-labeled cell-free translation system.
5. In a tissue extract with PDH defect new abnomal protein bands were detected by Western blot analysis, suggesting mutation of PDH<alpha> and <bet> genomes. PDH genomic DNA is now under screening from human leucocyte EMBL4 genomic library.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] 小池吉子: 生化学. 58. 606 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 小池吉子: 生化学. 59. 779 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 浦田芳重: 生化学. 59. 880 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kichiko Koike: Proc.Natl.Acad.Sci.USA. 85. 41-45 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kichiko Koike: Thiamin pyrophosphate biochemistry. II. (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Masahiko Koike: Thiamin pyrophosphate biochemistry. II. (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Matsuko Moriyasu: "Rapid and simple isolation procedure for three component enzymes of pig heart 2-oxoglutarate dehydrogenase complex" J. Nutr. Sci. Vitaminol.32. 33-40 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Yoshishige Urata: "Rapid and simple isolation procedure of three component enzymes of pig heart pyruvate dehydrogenase complex by high performance liquid chromatography" Nagasaki Igakkai Zasshi. 61(1). 41-47 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Keiko Tanaka: "A case of mitochondrial encephalopathy with nephrotic syndrome" Clin. Neurol.26. 1190-1196 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kichiko Koike: "Cloning and sequencing of cDNAs encoding and subunits of human pyruvatedehydrogenase" Proc. Natl. Acd. Sci. USA. 85. 41-45 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Masahiko Koike: "Novel separation of the component enzymes of pig heart pyruvate dehydrogenase complex by high-performance liquid chromatography" Thiamin Pyrophosphate Biochemistry, Vol. II.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kichiko Koike: "Enzymatic studies of the genetic defect of pyruvate dehydrogenase in chronic pyruvic and lactic acidemia" Thiamin Pyrophosphate Biochemistry, Vol. II.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Shuichiro Goda: "Biochemical studies in mitochondrial encephalomyopathy" J. Neurol. Neurosurg. Psychiatry.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 小池吉子: 生化学. 58. 606 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 浦田芳重: 長崎医学会雑誌. 61. 41-47 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Kichiko Koike: Proceeding of Second Meeting on the Function of Thiaminpyrophosphate Enzymes.

    • Related Report
      1986 Annual Research Report
  • [Publications] 小池正彦: 厚生省神経疾患・遺伝性代謝異常による中枢神経障害の成因と治療に関する研究班・昭和61年度報告書.

    • Related Report
      1986 Annual Research Report
  • [Publications] 田中恵子: 臨床神経学. 26. 1190-1196 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Shuichiro Goda: J.Neurol.Neurosurgery and Psychiatry.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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