Skip to main content

Main menu

  • Home
  • About the Journal
    • General Information
    • Scope
    • Editorial Board
    • Impact & Metrics
    • Benefits of Publishing
    • Advertising/Sponsorship
    • About the Biochemical Society
  • Current Issue
  • For Authors
    • Submit Your Paper
    • Submission Guidelines
    • Editorial Policy
    • Open Access Policy
    • Rights and Permissions
    • Biochemical Society Member Benefits
  • For Librarians
    • Subscriptions and Pricing
    • Check Your Usage
    • Terms and Conditions
      • Biochemical Journal- Terms and Conditions of Usage
    • Open Access Policy
    • FAQs for Librarians
    • Register for Free Trial
  • For Readers
    • Subscribe
    • Rights and Permissions
    • Biochemical Society Member Benefits
    • Journal Access for Biochemical Society Members
    • Request a Free Trial
  • Collections
    • Article Collections
    • Classic Articles
  • Help
    • Technical Support
    • Contact Us
  • Other Publications
    • Biochemical Journal
    • Clinical Science
    • Bioscience Reports
    • Neuronal Signaling
    • Biochemical Society Transactions
    • Essays in Biochemistry
    • Emerging Topics in Life Sciences
    • Biochemical Society Symposia
    • Cell Signalling Biology
    • Glossary of Biochemistry and Molecular Biology
    • The Biochemist
    • Biochemical Society

User menu

  • Log-in
  • Subscribe
  • Contact Us

Search

  • Advanced search
  • Other Publications
    • Biochemical Journal
    • Clinical Science
    • Bioscience Reports
    • Neuronal Signaling
    • Biochemical Society Transactions
    • Essays in Biochemistry
    • Emerging Topics in Life Sciences
    • Biochemical Society Symposia
    • Cell Signalling Biology
    • Glossary of Biochemistry and Molecular Biology
    • The Biochemist
    • Biochemical Society

Log-in

Sign-up for alerts  
  • My Cart
Biochemical Journal
Browse Archive
Advanced Search
  • Home
  • About the Journal
    • General Information
    • Scope
    • Editorial Board
    • Impact & Metrics
    • Benefits of Publishing
    • Advertising/Sponsorship
    • About the Biochemical Society
  • Current Issue
  • For Authors
    • Submit Your Paper
    • Submission Guidelines
    • Editorial Policy
    • Open Access Policy
    • Rights and Permissions
    • Biochemical Society Member Benefits
  • For Librarians
    • Subscriptions and Pricing
    • Check Your Usage
    • Terms and Conditions
    • Open Access Policy
    • FAQs for Librarians
    • Register for Free Trial
  • For Readers
    • Subscribe
    • Rights and Permissions
    • Biochemical Society Member Benefits
    • Journal Access for Biochemical Society Members
    • Request a Free Trial
  • Collections
    • Article Collections
    • Classic Articles
  • Help
    • Technical Support
    • Contact Us

Determination of the steady-state turnover rates of the metabolically active pools of phosphatidylinositol 4-phosphate and phosphatidylinositol 4,5-bisphosphate in human erythrocytes

C E King, P T Hawkins, L R Stephens, R H Michell
Biochemical Journal May 01, 1989, 259 (3) 893-896; DOI: 10.1042/bj2590893
C E King
Department of Biochemistry, University of Birmingham, P.O. Box 363, Birmingham B15 2TT, U.K.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • View author's works on this site
P T Hawkins
Department of Biochemistry, University of Birmingham, P.O. Box 363, Birmingham B15 2TT, U.K.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • View author's works on this site
L R Stephens
Department of Biochemistry, University of Birmingham, P.O. Box 363, Birmingham B15 2TT, U.K.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • View author's works on this site
R H Michell
Department of Biochemistry, University of Birmingham, P.O. Box 363, Birmingham B15 2TT, U.K.
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • View author's works on this site
  • Article
  • Info & Metrics
  • PDF
Loading

Abstract

When intact human erythrocytes are incubated at metabolic steady state in a chloride-free medium containing [32P]Pi, there is rapid labelling of the gamma-phosphate of ATP, followed by a slower labelling of the monoester phosphate groups of phosphatidylinositol 4-phosphate (PtdIns4P) and phosphatidylinositol 4,5-bisphosphate [PtdIns(4,5)P2] [King, Stephens, Hawkins, Guy & Michell (1987) Biochem. J. 244, 209-217]. We have analysed the early kinetics of the labelling of these phosphate groups, in order to determine: (a) the steady-state rates of the interconversions of phosphatidylinositol, PtdIns4P and PtdIns(4,5)P2; and (b) the fractions of the total cellular complement of PtdIns4P and PtdIns(4,5)P2 that participate in this steady-state turnover. The experimental data most closely fit a pattern of PtdIns4P and PtdIns(4,5)P2 turnover in which one-quarter of the total cellular complement of each lipid is in the metabolic pool that participates in rapid metabolic turnover, with rate constants of 0.028 min-1 for the interconversion of PtdIns and PtdIns4P, and of 0.010 min-1 for the PtdIns4P/PtdIns(4,5)P2 cycle. These rate constants represent metabolic fluxes of approx. 2.1 nmol of lipid/h per ml of packed erythrocytes between PtdIns and PtdIns4P and of approx. 5.7 nmol/h per ml of cells between PtdIns4P and PtdIns(4,5)P2.

  • © 1989 London: The Biochemical Society
Previous ArticleNext Article
Back to top

 

May 1989

Volume: 259 Issue: 3

Biochemical Journal: 259 (3)
  • Table of Contents
  • Table of Contents (PDF)
  • Cover (PDF)
  • Index by author
  • Advertising (PDF)
  • Front Matter (PDF)

Actions

Email

Thank you for your interest in spreading the word about Biochemical Journal.

NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.

Enter multiple addresses on separate lines or separate them with commas.
Determination of the steady-state turnover rates of the metabolically active pools of phosphatidylinositol 4-phosphate and phosphatidylinositol 4,5-bisphosphate in human erythrocytes
(Your Name) has forwarded a page to you from Biochemical Journal
(Your Name) thought you would like to see this page from the Biochemical Journal web site.
Share
Determination of the steady-state turnover rates of the metabolically active pools of phosphatidylinositol 4-phosphate and phosphatidylinositol 4,5-bisphosphate in human erythrocytes
C E King, P T Hawkins, L R Stephens, R H Michell
Biochemical Journal May 1989, 259 (3) 893-896; DOI: 10.1042/bj2590893
del.icio.us logo Digg logo Reddit logo Technorati logo Twitter logo CiteULike logo Facebook logo Mendeley logo
Citation Tools
Determination of the steady-state turnover rates of the metabolically active pools of phosphatidylinositol 4-phosphate and phosphatidylinositol 4,5-bisphosphate in human erythrocytes
C E King, P T Hawkins, L R Stephens, R H Michell
Biochemical Journal May 1989, 259 (3) 893-896; DOI: 10.1042/bj2590893

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
Alerts

Please log in to add an alert for this article.

Request Permissions
Save to my folders

View Full PDF

 Open in Utopia Docs
  • Tweet Widget
  • Facebook Like

Jump To

  • Article
  • Info & Metrics
  • PDF

Related Articles

Cited By...

  • Portland Press Homepage
  • Publish With Us
  • Advertising
  • Technical Support
  • Biochemical Journal
  • Clinical Science
  • Essays in Biochemistry
  • Emerging Topics in Life Sciences
  • Biochemical Society Transactions
  • Neuronal Signaling
  • Bioscience Reports
  • Cell Signalling Biology
  • Biochemical Society Symposia

Portland Press Limited
Charles Darwin House
12 Roger Street
London WC1N 2JU
Email: editorial@portlandpress.com

The Biochemical Society