ArticleThe Journal of physiology1997
Mechanical study of rat soleus muscle using caged ATP and X-ray diffraction: high ADP affinity of slow cross-bridges.
Article in The Journal of physiology, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 19 citations in OpenAlex.
- Lattice arrangement of myosin filaments correlates with fiber type in rat skeletal muscle.The Journal of general physiology · 2019Article
- Molecular basis of the catch state in molluscan smooth muscles: a catchy challenge.Journal of muscle research and cell motility · 2008Review
- Effect of strain on actomyosin kinetics in isometric muscle fibers.Biophysical journal · 2006Article
- Structural transients of contractile proteins upon sudden ATP liberation in skeletal muscle fibers.Biophysical journal · 2004Article
- Single turnover of cross-bridge ATPase in rat muscle fibers studied by photolysis of caged ATP.Journal of muscle research and cell motility · 2001Article
- Activating efficiency of Ca2+ and cross-bridges as measured by phosphate analog release.Biophysical journal · 2001Article
- ATP consumption and efficiency of human single muscle fibers with different myosin isoform composition.Biophysical journal · 2000Article
- Influence of ADP on cross-bridge-dependent activation of myofibrillar thin filaments.Biophysical journal · 2000Article
- Measurement of nucleotide exchange rate constants in single rabbit soleus myofibrils during shortening and lengthening using a fluorescent ATP analog.Biophysical journal · 2000Article
- Structural responses to the photolytic release of ATP in frog muscle fibres, observed by time-resolved X-ray diffraction.The Journal of physiology · 1999Article
- Modulating factors of calcium-free contraction at low [MgATP]: a physiological study on the steady states of skinned fibres of frog skeletal muscle.Journal of muscle research and cell motility · 1998Article
- Effects of ADP and low ATP on the Ca(2+)-sensitive transient contraction upon photolysis of caged ATP in rat muscle fibres: a study on the Bremel-Weber type cooperation.Journal of muscle research and cell motility · 1998Article
- Rate of phosphate release after photoliberation of adenosine 5'-triphosphate in slow and fast skeletal muscle fibers.Biophysical journal · 1998Article
Corrections and comments
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Authors and funding
3 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
1. The cross-bridges in slow- and fast-twitch fibres (taken, respectively, from soleus and psoas muscles of rats) were examined in mechanical experiments using caged ATP and X-ray diffraction, to compare their binding of ATP and ADP. 2. Caged ATP was photolysed in rigor fibres. When ADP was removed from pre-photolysis fibres, the initial relaxation (+/- Ca2+) in soleus was as fast as that in psoas fibres, whereas the subsequent contraction (+Ca2+) was slower in soleus than in psoas. The ATPase rate during the steady-state contraction was also slower in soleus fibres. 3. When ADP was added to pre-photolysis fibres (+/- Ca2+), tension developed even in the initial phase, the overall tension development being biphasic. Both initial and late components of the Ca(2+)-free contraction were enhanced when ADP was added before photolysis, although pre-photolysis ADP was not a prerequisite for the late component. The effect of ADP was greater in soleus than in psoas fibres. Static experiments on rigor fibres revealed a higher ADP affinity in soleus fibres. 4. The intensity of the actin layer-line from ADP rigor soleus fibres decreased rapidly on photorelease of ATP. We conclude that, despite the tight ADP binding of the soleus cross-bridge, its isometric reaction is not rate limited by the 'off' rate of ADP.
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