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The LIM and SH3 domain protein (lasp) family, the smallest proteins in the nebulin superfamily, consists of vertebrate lasp‐1 expressed in various non‐muscle tissues, vertebrate lasp‐2 expressed in the brain and cardiac muscle, and invertebrate lasp whose functions have been analyzed in Ascidiacea and Insecta. Gene evolution of the lasp family proteins was investigated by multiple alignments, comparison...
Myosin is a motor enzyme that converts the chemical energy in ATP into mechanical work to drive a myriad of intracellular processes, from muscle contraction to vesicular transport. Key steps in the transduction of energy are the force‐generating powerstroke, and the release of phosphate (Pi) from the nucleotide‐binding site. Both events occur rapidly after binding to actin, making it difficult to...
Microtubules (MTs) form physiologically important cytoskeletal structures that are assembled by tubulin polymerization in nucleation‐ and guanosine triphosphate (GTP)‐dependent manner. GTP hydrolysis competes with the addition of monomers, to determine the GTP‐cap size, and the onset of shrinkage, which alternates with growth. Multiple theoretical models of MT polymerization dynamics have been reconciled...
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