Paper 15: Skeletal Muscle Heavy-Chain Polypeptide 3 and Myosin Binding Protein H in the Pubococcygeus Muscle in Patients with and without Pelvic Organ Prolapse

2005 ◽  
Vol 11 (Supplement 1) ◽  
pp. S7-S8
Author(s):  
A F. Hundley ◽  
L Yuan ◽  
A G. Visco
2011 ◽  
Vol 436 (2) ◽  
pp. 437-445 ◽  
Author(s):  
Zhe Chen ◽  
Tong-Jin Zhao ◽  
Jie Li ◽  
Yan-Song Gao ◽  
Fan-Guo Meng ◽  
...  

Muscle contraction requires high energy fluxes, which are supplied by MM-CK (muscle-type creatine kinase) which couples to the myofibril. However, little is known about the detailed molecular mechanisms of how MM-CK participates in and is regulated during muscle contraction. In the present study, MM-CK is found to physically interact with the slow skeletal muscle-type MyBPC1 (myosin-binding protein C1). The interaction between MyBPC1 and MM-CK depended on the creatine concentration in a dose-dependent manner, but not on ATP, ADP or phosphocreatine. The MyBPC1–CK interaction favoured acidic conditions, and the two molecules dissociated at above pH 7.5. Domain-mapping experiments indicated that MM-CK binds to the C-terminal domains of MyBPC1, which is also the binding site of myosin. The functional coupling of myosin, MyBPC1 and MM-CK is further corroborated using an ATPase activity assay in which ATP expenditure accelerates upon the association of the three proteins, and the apparent Km value of myosin is therefore reduced. The results of the present study suggest that MyBPC1 acts as an adaptor to connect the ATP consumer (myosin) and the regenerator (MM-CK) for efficient energy metabolism and homoeostasis.


Author(s):  
Antonio Conti ◽  
Nilo Riva ◽  
Mariasabina Pesca ◽  
Sandro Iannaccone ◽  
Carlo V. Cannistraci ◽  
...  

Circulation ◽  
2009 ◽  
Vol 119 (9) ◽  
pp. 1253-1262 ◽  
Author(s):  
Sakthivel Sadayappan ◽  
James Gulick ◽  
Raisa Klevitsky ◽  
John N. Lorenz ◽  
Michelle Sargent ◽  
...  

1997 ◽  
Vol 80 (5) ◽  
pp. 665-672 ◽  
Author(s):  
Tatiana Alyonycheva ◽  
Leona Cohen-Gould ◽  
Christiana Siewert ◽  
Donald A. Fischman ◽  
Takashi Mikawa

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