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Physiological function of acylated proteins in salivary gland

Research Project

Project/Area Number 62480384
Research Category

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

Allocation TypeSingle-year Grants
Research Field Functional basic dentistry
Research InstitutionAsahi University

Principal Investigator

YOKOTA Yutaka  Asahi University School of Dentistry, Professor, 歯学部, 教授 (40075990)

Co-Investigator(Kenkyū-buntansha) MIZUNO Masako  Asahi University School of Dendistry, Research Associate, 歯学部, 助手 (80181907)
YASHIRO Koji  Asahi University School of Dentistry, Research Associate, 歯学部, 助手 (50182316)
KAMEYAMA Yasunaga  Asahi University School of Dentistry, Assistant Professor, 歯学部, 助教授 (50161245)
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 1988: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1987: ¥4,900,000 (Direct Cost: ¥4,900,000)
KeywordsAcylated protein / Salivary gland / Parotid gland / Triton X-114 / Biomembrane / Membrane-bound protein / リン脂質 / 唾液腺 / 遊離脂肪酸 / TritonX-114 / 唾液腺(耳下腺, 顎下腺, 舌下腺) / 分泌顆粒 / 脂肪酸 / アシルーCoA
Research Abstract

Recently, the mechanisms for receptor's function and intracellular transmission of various extracellular signals have been gradually clarified and it is no reported that the unique protein (acylated protein; AP) is related to this transmission mechanism. Therefore, in order to define the physiological significance of AP, we tried to analyze not only AP's protein but also its fatty acyl moiety using rat salivary gland as a model cell. The obtained results for the extraction of AP suggest AP that non-ionic detergent, especially Triton X-114, is very valuable using the phase separation method. The composition of fatty acids in membrane-bound proteins from rat parotid gland were analyzed and it was shown that palmitic, myristic and stearic acids were rich in mitochondrial and microsomal membrane fractions. This tendency was stronger in mitochondria than in microsomes. Since the fatty acid composition of membrane proteins was very different from that of membrane phospholipids which was observed previously, the common acyl donors, free fatty acids converted to acyl-CoAs, were analyzed. This fatty acid composition was similar to that of phospholipids and therefore, it is suggested that the enzyme to acylate protein may have very stict specificity for acyl-CoA. in order to clarify the physiological function of AP using salivary gland, it is effective to observe the changes of AP's protein pattern and fatty acyl moiety in the stimulated cells for saliva secretion. although they were analyzed suing phenylephrine and phorbol ester(PMA) for stimuli and radio-labeled fatty acids, the significant alterations in not only membranebound proteins, hoever, but also their fatty acids were not observed under the conditions used. In future, we will experiment to purify AP and clarify its biochemical and physiological characteristics.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Yasunaga Kameyama: Comparative Biochemistry and Physiology. 87B. 741-746 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Masako Mizuno: Cell Biology International Reports. 11. 629-636 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Koji Yashiro: Archives of Oral Biology. 32. 799-805 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Koji Yasunaga: Japanese Journal of Oral Biology. 30. 234-238 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunaga Kameyama: Comparison Biochemistry and Physiology. 90B. 269-273 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Koji Yashiro: Comparative Biochemistry and Physiology. 90C. 397-402 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunaga Kameyama: Japanese Journal of Oral Biology. 30. 841-847 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Koji Yashiro: Archives of Oral Biology. 34. 203-208 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Koji,Yashiro: "Positional distribution of fatty acids in phosphatidylcholine and phosphatidyl-ethanolamine from rat sublingual salivary gland" Japanese Journal of Oral Biology. 30. 234-238 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunaga,Kameyama: "Comparison of phospholipid synthesis in rat salivary glands: Properties of l-acylglycerophosphorylcholine and l-acylglycerophosphate acyltransferase systems in microsomes" Comparative Biochemistry and Physiology. 90B. 269-273 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Koji,Yashiro: "Inducing effects of chronic administration of isoproterenol on l-acyl-sn-glycero-3-phosphate and l-acyl-sn-glycero-3-phosphocholine acyltransferases in rat parotid salivary gland" Comparative Biochemistry and Physiology. 90C. 397-402 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Yasunaga,Kameyama: "Physical properties of membrance lipids in rat salivary glands: involvement of cholesterol" Japanese Journal of Oral Biology. 30. 841-847 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Koji,Yashiro: "Comparison of phospholipid N-methylation activity in rat submandibular salivary gland and liver" Archives of Oral Biology. 34. 203-208 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] Koji Yashiro: Japanese Journal of Oral Biology. 30. 234-238 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Yasunaga Kameyama: Comparative Biochemistry and Physiology. 90B. 269-273 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Koji Yashiro: Compfrative Biochemistry and Physiology. 90C. 397-402 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Yasunaga Kameyama: Japanese Journal of Oral Biology. 30. 841-847 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Koji Yashiro: Archives of Oral Biology. 34. 203-208 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] Yasunaga KANEYAMA: Comparative Biochemistry and Physiology. 87B. 741-746 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Masako MIZUNO: Cell Bioligy International Reports. 11. 629-636 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Koji YASHIRO: Archives of Oral Biology. 32. 799-805 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] Yasunaga KANEYAMA: Comparative Biochemistry and Physiology.

    • Related Report
      1987 Annual Research Report
  • [Publications] Koji YASHIRO: Comparative Biochemistry and Physiology.

    • Related Report
      1987 Annual Research Report
  • [Publications] Koji YASHIRO: Japanese Journal of Oral Biolgy.

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2023-01-13  

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