Properties of membrane phospholipids and their fatty acyl compositions of secretory granules from rat parotid gland

M. Mizuno, Y. Kameyama, K. Yashiro, Y. Yokota

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A secretory granular fraction isolated from rat parotid glands was remarkably different from a microsomal fraction in its phospholipid composition. It had higher levels of lysophospholipids (8%) and phosphatidylethanolamine (31%), while there were lower levels of phosphatidylcholine (40%) and phosphatidylserine (2.1%) than the microsomal fraction. However, fatty acid compositions of individual phospholipid classes from the two subfractions were found to be nearly similar to each other. ESR analysis demonstrated that extracted phospholipids from the secretory granular fraction were more fluid than those from microsomes. The relevance of these observations to physiological function of secretory granules is discussed.

Original languageEnglish
Pages (from-to)629-636
Number of pages8
JournalCell Biology International Reports
Volume11
Issue number9
DOIs
Publication statusPublished - 09-1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Cell Biology

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