ArticleBiophysical journal1998
Rate of phosphate release after photoliberation of adenosine 5'-triphosphate in slow and fast skeletal muscle fibers.
Article in Biophysical journal, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 26 citations in OpenAlex.
- Delayed phosphate release can highly improve energy efficiency of muscle contraction.Biophysical journal · 2025Article
- Recent insights into the relative timing of myosin's powerstroke and release of phosphate.Cytoskeleton (Hoboken, N.J.) · 2021Review
- Power output of skinned skeletal muscle fibres from the cheetah (Acinonyx jubatus).The Journal of experimental biology · 2013Article
- Millisecond-scale biochemical response to change in strain.Biophysical journal · 2011Article
- Time course and strain dependence of ADP release during contraction of permeabilized skeletal muscle fibers.Biophysical journal · 2009Article
- Caged protein prenyltransferase substrates: tools for understanding protein prenylation.Chemical biology & drug design · 2008Article
- Physiological properties of human diaphragm muscle fibres and the effect of chronic obstructive pulmonary disease.The Journal of physiology · 2008Article
- Effect of strain on actomyosin kinetics in isometric muscle fibers.Biophysical journal · 2006Article
- Actomyosin energy turnover declines while force remains constant during isometric muscle contraction.The Journal of physiology · 2004Article
- Does phosphate release limit the ATPases of soleus myofibrils? Evidence that (A)M. ADP.Pi states predominate on the cross-bridge cycle.Journal of muscle research and cell motility · 2004Article
- At physiological temperatures the ATPase rates of shortening soleus and psoas myofibrils are similar.Biophysical journal · 2003Article
- Characterization of the cross-bridge force-generating step using inorganic phosphate and BDM in myofibrils from rabbit skeletal muscles.The Journal of physiology · 2002Article
- Effects of sarcomere length and temperature on the rate of ATP utilisation by rabbit psoas muscle fibres.The Journal of physiology · 2001Article
- Link between the enzymatic kinetics and mechanical behavior in an actomyosin motor.Biophysical journal · 2001Article
- ATP consumption and efficiency of human single muscle fibers with different myosin isoform composition.Biophysical journal · 2000Article
- The efficiency of contraction in rabbit skeletal muscle fibres, determined from the rate of release of inorganic phosphate.The Journal of physiology · 1999Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Inorganic phosphate (Pi) release was determined by means of a fluorescent Pi-probe in single permeabilized rabbit soleus and psoas muscle fibers. Measurements of Pi release followed photoliberation of approximately 1.5 mM ATP by flash photolysis of NPE-caged ATP in the absence and presence of Ca2+ at 15 degrees C. In the absence of Ca2+, Pi release occurred with a slow rate of 11 +/- 3 microM . s-1 (n = 3) in soleus fibers and 23 +/- 1 microM . s-1 (n = 10) in psoas fibers. At saturating Ca2+ concentrations (pCa 4.5), photoliberation of ATP was followed by rapid force development. The initial rate of Pi release was 0.57 +/- 0.05 mM . s-1 in soleus (n = 13) and 4.7 +/- 0.2 mM . s-1 in psoas (n = 23), corresponding to a rate of Pi release per myosin head of 3.8 s-1 in soleus and 31.5 s-1 in psoas. Pi release declined at a rate of 0.48 s-1 in soleus and of 5.2 s-1 in psoas. Pi release in soleus was slightly faster in the presence of an ATP regenerating system but slower when 0.5 mM ADP was added. The reduction in the rate of Pi release results from an initial redistribution of cross-bridges over different states and a subsequent ADP-sensitive slowing of cross-bridge detachment.
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