These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Control of heat produced during ATP hydrolysis by the sarcoplasmic reticulum Ca(2+)-ATPase in the absence of a Ca2+ gradient.
    Author: de Meis L.
    Journal: Biochem Biophys Res Commun; 1998 Feb 13; 243(2):598-600. PubMed ID: 9480854.
    Abstract:
    The amount of heat produced during the hydrolysis of ATP by the sarcoplasmic reticulum Ca(2+)-ATPase was found to vary depending on the Ca2+ concentration in the medium. When the CaCl2 concentration is raised from 0.1 to 2.0 mM a part of the energy derived from ATP hydrolysis is not dissipated as heat but it is used by the enzyme to resenthesize a small fraction of the ATP previously cleaved. Thus, Ca2+ seems to regulate the ATPase in such a way as to vary the fraction of energy derived from ATP hydrolysis which is converted into heat and that which is conserved as chemical energy.
    [Abstract] [Full Text] [Related] [New Search]