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チトクロ-ムPー450の分子生物学・機能の分子機構

Research Project

Project/Area Number 02217103
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionKeio University

Principal Investigator

石村 巽  慶應義塾大学, 医学部, 教授 (40025599)

Co-Investigator(Kenkyū-buntansha) 岡本 光弘  大阪大学, 医学部, 教授 (90028613)
武森 重樹  広島大学, 総合科学部, 教授 (60019461)
北川 禎三  岡崎国立共同研究機構, 分子科学研究所, 教授 (40029955)
川戸 佳  東京大学, 教養学部, 助教授 (50169736)
森島 績  京都大学, 工学部, 教授 (50026093)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥51,900,000 (Direct Cost: ¥51,900,000)
Fiscal Year 1990: ¥51,900,000 (Direct Cost: ¥51,900,000)
Keywordsチトクロ-ムPー450 / Pー450_<11β> / Pー450_<aldo> / Pー450_<14DM> / 副腎皮質ミトコンドリア / Pー450_<cam> / 部位特異的変異
Research Abstract

1.石村らはヒトのアルドステロン合成酵素(Pー450aldo)をアルドステロン産生腫瘍から精製・分離し(63回日本生化学会発表、J.Biol.Chem.in press)、これがCYP11B2遺伝子の産物であることを示した。またラット副腎皮質球状層におけるPー450aldoの発現がアンギオテンシンIIおよびK^+により調節されることを証明した(63回日本内分泌学会発表、Endocrinology,in press)。さらに岡本らはラットPー450aldoのcDNAをCOS細胞に発現させ、そのアルドステロン合成活性を確認した(Biochem.Biophys.Res.Commun.169他)。以上によりアルドステロン合成酵素の実体と分子的性質が解明された。一方、武森らはウシ副腎皮質培養細胞系等を用いてPー450 _<17α,lyase>ならびにPー450_<c21>が関与するミクロソ-ム電子伝達系の反応を解析し、ステロイド代謝の調節機構を明らかにした(J.Steroid.Biochem.投稿中)。井柳らはPー450の酸化反応に共役するグルクロン酸転移酵素の遺伝子解析を行なった(63回日本生化学会発表)。
2.北川、飯塚、森島らはそれぞれ共鳴ラマン散乱、X線吸収スペクトル、二次元NMR法を用いてP450camの構造ー活性相関を解明し、川戸らはフラッシュホトリシス偏光解消法を用いて膜中の各種Pー450の回転運動と蛋白質相互作用を測定した(J.Biochem.107他)。 吉田らは酵母Pー450_<14DM>(ラノステロ-ル14αー脱メチル化酵素)の活性中心と其質の相互作用を各種のアナログを用いて解析した(Chirality,2他)。

Report

(1 results)
  • 1990 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] Imai,M.: "Molecular Cloning of a cDNA Encoding Aldosterone Synthase Cytochrome Pー450 in Rat Adrenal Cortex" FEBS Letters. 263. 299-302 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Shibata,H.: "Regulation of Aldosterone Synthase Cytochrome Pー450 in Rat Adrenals by Angiotensin II and Potassuium" Endocrinology. 128. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Ogishima,T.: "Aldosterone Synthase Cytochrome Pー450 expressed in the Adrenals of Patients with Primary Aldosteronism" The Journal of Biological Chemistry.(1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Sato,H.: "Thermodynamic Study of Protein Dynamic Structure in the Oxygen Binding Reaction of Myoglobin" The Journal of Biological Chemistry. 265. 18823-18828 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Kamiya,N.: "Heme Environmental Structure of Novel Artificial Myoglobin with Closed Heme Pocket:SiteーSpecific ChemicalーModification Producing Distal NーTetrazolyーHistydine E7 by Cyanogen Bromide and Azide Ion." The Journal of the American Chemistry. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Ueno,I.: "Characterization of bーType Cytochrome in situ by Electron Paramagnetic Resonance Spectroscopy" FEBS Letters. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Unno,M.: "High Pressure Laser Photolysis Study of Hemoproteins.Effects of Pressure on Carbon Monoxide Binding Dymamics for Rーand TーState Hemoglobins." Biochemistry. 29. 10199-10205 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Nakashima,S.: "Spin Coupling in Ferric Porphyrin and Chlorin πーCation Radical Complexes." Inorganic Chemistry. 29. 5207-5211 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Unno,M.: "Pressure Effects on the Carbon Monoxide Rebinding to the Isolated α and β Chains of Human Hemoglobin." The Jounal of the American Chemical Society.

    • Related Report
      1990 Annual Research Report
  • [Publications] Egawa,T.: "Resonance Raman Study on Mutant Cytochrome Pー450 Obtained by Site Directed Mutagenesis." Biochimica et Biophysica Acta. 1040. 211-216 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Ogura,T.: "Observation of the Fe^<4+>=O Stretching Raman Band for Cytochrome Oxidase Compound B at Ambient Temperature" The Journal of Biological Chemistry. 265. 14721-14723 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Egawa,T.: "Observation the OーO Stretching Raman Band for Cytochrome Pー450_<cam> under Catalytic Conditions." The Journal of Biological Chemistry. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Ohta,Y.: "Conversion of Cholesterol to Pregnenolone Mobilizes Cytochrome Pー450 in the Inner Membrane of Adrenocortical Mitochondria:Protein Rotation Study" The Journal of Biochemistry. 107. 97-104 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Soma,Y.: "Effects of Oxygen on the Relative Photodissociability of Cytochrome Pー450・CO Complex in Rat Liver Microsomes." Biochemistry. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Kawato,S.: "DrugーInduction Decreases the Mobility of Cytochrome Pー450 in Rat Liver Microsomes:Protein Rotation Study" The Journal of Biochemistry. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Iyanagi,T.: "Molecular Basis of Multiple UDPーGlucuronosyltransferase Isoenzyme Deficiencies in the Hyperbilirubinemic Rat(Gunn Rat)" The Journal of Biological Chemistry. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Shimura,K.: "Immunocytochemical and Biochemical Studies on the Localization and Changes of 17αーHydroxylase/C17ーC20 lyase Activity in Immature Rat Ovary Treated with PMSG and hCG" Histochemistry. 94. 225-229 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yamazaki,T.: "Cytochrome Pー450(17α,lyase)ーMediating Pathway of Androgen Synthesis in Bovine Adrenocortical Cultured Cells." The Journal of Steroid Biochemistry. (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Kominami,S.: "The Role of Cytochrome b5 in Adrenal Microsomal Steroidogenesis" The Journal of Steroid Biochemistry. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Morohashi,K.: "Enzymatic Activities of Pー450(11β)s Expressed by Two cDNAs in COSー7 Cells." The Journal of Biochemistry. 107. 635-640 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Matsukawa,N.: "Molecular Cloning and Expression of cDNAs Encoding Rat Aldosterone Synthase,Variants of Cytochrome Pー450_<11β>" Biochemical and Biophysical Research Communications. 169. 245-252 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Nonaka,Y.: "Molecular Nature of Aldosterone Synthase,a Member of Cytochrome Pー450_<11β> Family" Endocrine Research. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Kaergel,E.: "Comparative Study on Cytochrome Pー450 of Yeast Using Specific Antibodies to Cytochrome Pー450_<alk> and Pー450_<14DM>" Yeast. 6. 61-67 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshida,Y.: "Stereoselective Interaction of an Azole Antifungal Agent with Its Target,Lanosterol 14αーDemethylase(Cytochrome Pー450_<14DM>):A Model Study with Stereoisomers of Triadimenol and Purified Cytochrome Pー450_<14DM> from Yeast" Chirality. 2. 10-15 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Aoyama,Y.: "Role of the Side Chain of Lanosterol in Substrate Recognition and Chatalytic Activity of Lanosterol 14αーDemethylase(Cytochrome Pー450_<14DM>)of Yeast" Biochimica et Biophysica Acta. (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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