Syntrophin is an actin-binding protein the cellular localization of which is regulated through cytoskeletal reorganization in skeletal muscle cells

2004 ◽  
Vol 83 (10) ◽  
pp. 555-565 ◽  
Author(s):  
Yuko Iwata ◽  
Maurilio Sampaolesi ◽  
Munekazu Shigekawa ◽  
Shigeo Wakabayashi
PLoS ONE ◽  
2013 ◽  
Vol 8 (1) ◽  
pp. e55634 ◽  
Author(s):  
Andrew Lee ◽  
Fumihiko Hakuno ◽  
Paul Northcott ◽  
Jeffrey E. Pessin ◽  
Maria Rozakis Adcock

1999 ◽  
Vol 96 (6) ◽  
pp. 3223-3227 ◽  
Author(s):  
A. O. Gramolini ◽  
L. M. Angus ◽  
L. Schaeffer ◽  
E. A. Burton ◽  
J. M. Tinsley ◽  
...  

2020 ◽  
Vol 152 (10) ◽  
Author(s):  
Werner Melzer

In this issue, Michelucci et al. report the existence of specific sites acting as Ca2+ entry units (CEUs) in fast skeletal muscle of mice lacking calsequestrin (CASQ1), the major Ca2+ binding protein of the SR. The CEU provides constitutive and store-operated Ca2+ entry (SOCE) and resistance to force decline resulting from SR Ca2+ depletion during repetitive muscle activity.


1999 ◽  
Vol 10 (6) ◽  
pp. 1973-1984 ◽  
Author(s):  
Pamela M. Guy ◽  
Daryn A. Kenny ◽  
Gordon N. Gill

PDZ and LIM domains are modular protein interaction motifs present in proteins with diverse functions. Enigma is representative of a family of proteins composed of a series of conserved PDZ and LIM domains. The LIM domains of Enigma and its most related family member, Enigma homology protein, bind to protein kinases, whereas the PDZ domains of Enigma and family member actin-associated LIM protein bind to actin filaments. Enigma localizes to actin filaments in fibroblasts via its PDZ domain, and actin-associated LIM protein binds to and colocalizes with the actin-binding protein α-actinin-2 at Z lines in skeletal muscle. We show that Enigma is present at the Z line in skeletal muscle and that the PDZ domain of Enigma binds to a skeletal muscle target, the actin-binding protein tropomyosin (skeletal β-TM). The interaction between Enigma and skeletal β-TM was specific for the PDZ domain of Enigma, was abolished by mutations in the PDZ domain, and required the PDZ-binding consensus sequence (Thr-Ser-Leu) at the extreme carboxyl terminus of skeletal β-TM. Enigma interacted with isoforms of tropomyosin expressed in C2C12 myotubes and formed an immunoprecipitable complex with skeletal β-TM in transfected cells. The association of Enigma with skeletal β-TM suggests a role for Enigma as an adapter protein that directs LIM-binding proteins to actin filaments of muscle cells.


2020 ◽  
Vol 73 ◽  
pp. 109692
Author(s):  
Mathieu Antoine ◽  
Isabelle Vandenbroere ◽  
Somadri Ghosh ◽  
Christophe Erneux ◽  
Isabelle Pirson

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