Abstract：
:A balanced redox status is necessary to optimize force production in contractile apparatus, where free radicals generated by skeletal muscle are involved in some basic physiological processes like excitation-contraction coupling. Protein glutathionylation has a key role in redox regulation of proteins and signal transduction. Here we show that myosin is sensitive to in vitro glutathionylation and MALDI-TOF analysis identified three potential sites of glutathione binding, two of them locating on the myosin head. Glutathionylation of myosin has an important impact on the protein structure, as documented by the lower fluorescence quantum yield of glutathionylated myosin and its increased susceptibility to the proteolytic cleavage. Myosin function is also sensitive to glutathionylation, which modulates its ATPase activity depending on GSSG redox balance. Thus, like the phosphorylation/dephosphorylation cycle, glutathionylation may represent a mechanism by which glutathione modulates sarcomere functions depending on the tissue redox state, and myosin may constitute a muscle redox-sensor.
journal_name
J Muscle Res Cell Motiljournal_title
Journal of muscle research and cell motilityauthors
Passarelli C,Petrini S,Pastore A,Bonetto V,Sale P,Gaeta LM,Tozzi G,Bertini E,Canepari M,Rossi R,Piemonte Fdoi
10.1007/s10974-008-9145-xsubject
Has Abstractpub_date
2008-01-01 00:00:00pages
119-26issue
2-5eissn
0142-4319issn
1573-2657journal_volume
29pub_type
杂志文章abstract：:Ryanodine receptors (RyRs) are huge homotetrameric Ca2+ release channels localized to the sarcoplasmic reticulum. RyRs are responsible for the release of Ca2+ from the SR during excitation-contraction coupling in striated muscle cells. Recent revolutionary advancements in cryo-electron microscopy have provided a numbe...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/s10974-020-09575-6
更新日期：2020-02-10 00:00:00
abstract：:Polyclonal antibodies have been developed against the junctional feet or spanning protein from skeletal muscle triads. These probes in combination with immunogold labels have been used to localize the spanning protein by electron microscope of isolated vesicles from terminal cisternae/triads. The spanning protein anti...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF01773877
更新日期：1988-08-01 00:00:00
abstract：:The present study describes transitions in myosin heavy chain expression in the extraocular muscles of rats between the ages of E17 and adult. The unique phenotype of the extraocular muscle is reflected in its fibre type composition, which is comprised by six distinct profiles, each defined by location (orbital versus...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF00240928
更新日期：1996-06-01 00:00:00
abstract：:Following activation by G-protein-coupled receptor agonists, protein kinase C (PKC) modulates cardiac myocyte function by phosphorylation of intracellular targets including myofilament proteins cardiac troponin I (cTnI) and cardiac myosin binding protein C (cMyBP-C). Since PKC phosphorylation has been shown to decreas...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/s10974-012-9294-9
更新日期：2012-12-01 00:00:00
abstract：:The developmental expression of nebulin was studied in embryonic chick skeletal muscle cells in vitro by means of immunofluorescence microscopy. Initially nebulin appeared homogeneously or in a punctate form in the cytoplasm, and then it was assembled into I-Z-I-like complexes containing actin and alpha-actinin but no...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF01738427
更新日期：1992-02-01 00:00:00
abstract：:Changes in the isoform patterns of myosin heavy chains (MHC) and Ca2+-ATPase (SERCA) were studied in long-term (72 days) denervated slow-twitch soleus muscles of euthyroid and hyperthyroid rabbits. MHC isoforms were separated electrophoretically. SERCA isoforms were assessed by electrophoretic separation of the trypsi...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1023/a:1014543507149
更新日期：2001-01-01 00:00:00
abstract：:Hodges and his colleagues identified a 12 amino acid fragment of troponin I (TnI-ip) that inhibits Ca(2+)-activated force and reduces the effectiveness Ca(2+) as an activator. To understand the role of troponin C (TnC) in the extended cooperative interactions of thin filament activation, we compared the effect of TnI-...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/s10974-013-9336-y
更新日期：2013-05-01 00:00:00
abstract：:A popular part of many athletes pre-game regime is to stretch. We examined whether a pre-injury stretching protocol could prevent acute contraction-induced injury. The in situ extensor digitorum longus (EDL) muscle of an anesthetized mouse (80 mg/kg intra-peritoneal) was used. Damage to the muscle from eccentric contr...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1023/a:1013188001776
更新日期：2001-01-01 00:00:00
abstract：:The β-adrenergic receptor stimulation improves endurance in fast twitch muscles and these effects are sensitive to extracellular Ca2+ influx. Present study is aimed to determine the effects of adrenaline, with different concentrations of extracellular Ca2+[Formula: see text], on the contractility and endurance of slow...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/s10974-019-09551-9
更新日期：2019-12-01 00:00:00
abstract：:A high resolution, time efficient method is described for determining the complex modulus of activated striated muscle. In this method the applied oscillation of muscle length takes the form of pseudo-random binary noise, PRBN. As a time-domain signal, PRBN is an extension of the double step approach to include n step...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF01753650
更新日期：1986-08-01 00:00:00
abstract：:Troponin T (TnT) is one of the muscle regulatory proteins and is thought to be related to unique contractile properties in diverse muscles and also to myogenesis. The expression of TnT isoforms in the chicken wing muscles was investigated by two-dimensional gel electrophoresis and immunoblotting with an antiserum agai...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1023/a:1016369300532
更新日期：2001-01-01 00:00:00
abstract：:In isolated myosin the reaction sequence of essential thiol groups with N-ethylmaleimide was studied using the following five approaches: kinetics of the modification reaction, effects of modification on enzyme properties, affinity chromatography of isolated subfragment-1 stemming from modified myosin, isolation of cy...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF00711923
更新日期：1980-03-01 00:00:00
abstract：:In Drosophila melanogaster two high molecular weight tropomyosin isoforms, historically named heavy troponins (TnH-33 and TnH-34), are encoded by the Tm1 tropomyosin gene. They are specifically expressed in the indirect flight muscles (IFM). Their N-termini are conventional and complete tropomyosin sequences, but thei...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/s10974-005-9044-3
更新日期：2006-01-01 00:00:00
abstract：:Creatine kinase (CK) isoenzyme compositions of different types of single muscle fibres dissected from soleus (SOL) and extensor digitorum longus (EDL) muscles from rats were examined. CK isoenzymes were separated into cytoplasmic (CK-MM, CK-MB, CK-BB) (muscle, brain and hybrid types, respectively) and mitochondrial (m...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF01781172
更新日期：1991-02-01 00:00:00
abstract：:The effects of two amino acids, arginine which has a positively charged side-chain and glutamate which has a negatively charged side-chain on the Ca2+-activation properties of the contractile apparatus were examined in four structurally and functionally different types of skeletal muscle; long- and short-sarcomere fib...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/s10974-004-2769-6
更新日期：2004-01-01 00:00:00
abstract：:Under muscle disuse conditions decrease of expression of MyHC of slow type, and sometimes of type IIa, as well as upregulation of expression of IIb and IId/x isoforms were observed. Through dephosphorylation and entry of NFAT molecules to the nucleus calcineurin/NFATc1 signaling pathway promotes upregulation of the sl...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/s10974-015-9428-y
更新日期：2016-04-01 00:00:00
abstract：:Cytokinesis is the mechanical process that allows the simplest unit of life, the cell, to divide, propagating itself. To divide, the cell converts chemical energy into mechanical energy to produce force. This process is thought to be active, due in large part to the mechanochemistry of the myosin-II ATPase. The cell's...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章,评审
doi：10.1023/a:1024419510314
更新日期：2002-01-01 00:00:00
abstract：:The organization of the principal cytoskeletal components (actin, tubulin and 10 nm filament protein) have been compared by immunofluorescence microscopy in two populations of chick heart fibroblasts, previously shown to be adapted respectively for rapid, directed migration or adhesion and growth. We find that neither...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF00711922
更新日期：1980-03-01 00:00:00
abstract：:Protein kinase C (PKC) is known to play important roles in integrin mediated cell spreading. This study investigated the role of PKC during insulin mediated muscle cell spreading, which was independent of integrin alpha5. We found that PKC-alpha becomes active and localise to membrane during insulin mediated cell spre...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1023/a:1022028808806
更新日期：2002-01-01 00:00:00
abstract：:The characteristics of the titin filament in the vicinity of the Z-line were investigated using immunoelectron microscopy. We used monoclonal titin antibodies T-11 and T-12 on single fibres of frog skeletal muscle, and on Z-line-extracted fibres. It is well established that the I-band region of titin is elastic. We fi...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF00121293
更新日期：1993-08-01 00:00:00
abstract：:Small but statistically significant shifts (hysteresis) between the up (increasing tension direction) and down (decreasing tension) pCa/tension relation for several muscle types of the rabbit and rat were found. The largest shift is, at most, 0.093 p units or 60% of that reported for the barnacle muscle. The direction...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF00713061
更新日期：1985-04-01 00:00:00
abstract：:The effect of changes in hydrostatic pressure (up to 10 MPa) on the maximally calcium-activated tension in glycerinated rabbit psoas fibres has been examined. The steady active tension was depressed by 0.8% per MPa pressure rise. This pressure sensitivity was enhanced by the pressure of millimolar phosphate and depres...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF01739967
更新日期：1989-04-01 00:00:00
abstract：:The change in orientation of myosin crossbridges in contracting muscle during sudden length changes was examined by fluorescence polarization. This study used a fluorescent ATP analogue, 1,N6-etheno-2-aza-ATP(epsilon-2-aza-ATP) as a probe. Its fluorescence is considerably enhanced upon binding with myosin and is depen...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF00712310
更新日期：1985-02-01 00:00:00
abstract：:The myosin light chains of slow muscles from different species have been examined two-dimensional gel electrophoresis. While the myosin light chain 2S of mammalian soleus muscles (rabbit, rat and guinea-pig) could not be distinguished from that of avian anterior latissimus dorsi (chicken and turkey), the 1S light chai...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF00713271
更新日期：1981-09-01 00:00:00
abstract：:The pattern of spontaneous skeletal muscle degeneration and clinical recovery hindlimb muscles of the mdx mutant mouse was examined for functional and metabolic confirmation of apparent structural regeneration. The contractile properties, histochemical staining and myosin light chain and parvalbumin contents of extens...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF01738755
更新日期：1988-12-01 00:00:00
abstract：:The L-type Ca2+ channel in skeletal muscle (alpha1S) is essential for excitation-contraction (EC) coupling. Previous studies using chimeras composed of alpha1S together with alpha1C or alpha1M demonstrated the importance of the alpha1S II-III loop and of a smaller subdomain (residues 720-764; 'ECC') in skeletal EC cou...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1023/a:1024830132118
更新日期：2003-01-01 00:00:00
abstract：:Scallop S1 has a region sensitive to tryptic hydrolysis not found thus far in S1s of other species, located 65K from the N-terminus as determined by SDS/polyacrylamide-gel electrophoresis. In the presence of actin the S1 heavy chain is preferentially cleaved at this site. The high-salt EDTA and calcium ATPase activiti...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF01568891
更新日期：1987-08-01 00:00:00
abstract：:The sonic muscle of the oyster toadfish, Opsanus tau, can produce unfused contractions at 300 Hz. Electron microscopy shows a great abundance of the Sarcoplasmic reticulum (SR) in this muscle, but no functional characterization of the capabilities of the SR has been reported. We measured the oxalate-supported Ca2+ upt...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1023/a:1005333215172
更新日期：1998-08-01 00:00:00
abstract：:Invertebrate mini-titins are members of a class of myosin-binding proteins belonging to the immunoglobulin superfamily that may have structural and/or regulatory properties. We have isolated mini-titins from three molluscan sources: the striated and smooth adductor muscles of the scallop, and the smooth catch muscles ...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF00141557
更新日期：1993-12-01 00:00:00
abstract：:To evaluate a potential regulatory role of the nerve, the distribution and expression of dystrophin, of beta-dystroglycan (43DAG) and adhalin (50DAG), two of the dystrophin-associated proteins and utrophin (dystrophin related protein or DRP) were studied in rat muscles after 2 weeks of denervation. We found that dystr...
journal_title：Journal of muscle research and cell motility
pub_type： 杂志文章
doi：10.1007/BF00124352
更新日期：1996-10-01 00:00:00
