Evidence that unphosphorylated smooth muscle myosin supports smooth muscle contraction

¹Istituto di Chimica Biologica, Università di Ferrara, Italy.

Biochemical and Biophysical Research Communications

|August 15, 1991

Abstract:

Unphosphorylated smooth muscle myosin filaments do not disassemble in MgATP, provided that the solution is supplemented either by 25% serum albumin or by 6% polyethylene glycol 6000. These filaments are able to support actomyosin retraction but their ATPase activity is not activated by tropomyosin-decorated F-actin.

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Abstract:

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