Identification of a novel inositol bisphosphate isomer formed in chemoattractant stimulated human polymorphonuclear leukocytes.

Journal Article (Journal Article)

Analysis of inositol phosphate formation in chemoattractant-stimulated human polymorphonuclear leukocytes demonstrated the production of inositol 1,4,5-trisphosphate, inositol 1,3,4-trisphosphate, inositol 1,3,4,5-tetrakisphosphate, inositol 1,4-bisphosphate and another inositol bisphosphate isomer not detected in unstimulated cells. Studies in cell sonicates provided evidence that the previously unidentified inositol bisphosphate isomer is produced via the degradation of inositol 1,3,4-trisphosphate. This unidentified inositol bisphosphate peak was purified by high pressure liquid chromatography, and base hydrolyzed to form a mixture of inositol monophosphate isomers. Based on these studies, the unidentified peak was identified as inositol 3,4-bisphosphate. Identification of this isomer defines a new metabolic product derived from the initial inositol 1,4,5-trisphosphate formation, and also suggests another substrate for the inositol 1-phosphatase.

Full Text

Duke Authors

Cited Authors

  • Dillon, SB; Murray, JJ; Snyderman, R

Published Date

  • April 14, 1987

Published In

Volume / Issue

  • 144 / 1

Start / End Page

  • 264 - 270

PubMed ID

  • 3034246

International Standard Serial Number (ISSN)

  • 0006-291X

Digital Object Identifier (DOI)

  • 10.1016/s0006-291x(87)80505-3


  • eng

Conference Location

  • United States