Myosins, actin-dependent molecular motors, are best known for their involvement in muscle contraction. However, besides classical (conventional) myosins, there is a vast number of other myosin motors that structurally and functionally do not resemble muscle myosins and therefore are termed as unconventional myosins. Since discovery in 1973 of the first unconventional myosin, myosin I, in Acanthamoeba castellanii by Thomas D. Pollard and Edward D. Korn, it has been shown that unconventional myosins form a large family, members of which are involved in a plethora of cellular functions, including those associated with intracellular trafficking and cell migration. However, despite the intensive research still many questions persist about their specific role(s) in these processes.

MBC online publishes papers that describe and interpret results of original research conserning the molecular aspects of cell structure and function.

No. 2, pt. 2 of November issue each year from v. 19 (1963)-47 (1970) and v. 55 (1972)- contain the Abstracts of papers presented at the Annual Meeting of the American Society for Cell Biology, 3d (1963)-10th (1970) and 12th (1972)-

This highly authoritative volume highlights the remarkable superfamily of molecular motors called myosins, which are involved in such diverse cellular functions as muscle contraction, intracellular transport, cell migration and cell division. In a timely compilation of chapters written by leading research groups that have made key discoveries in the field, the current understanding of the molecular mechanisms and biological functions of these intriguing proteins is explored.

The cytoskeleton is a highly dynamic intracellular platform constituted by a three-dimensional network of proteins responsible for key cellular roles as structure and shape, cell growth and development, and offering to the cell with "motility" that being the ability of the entire cell to move and for material to be moved within the cell in a regulated fashion (vesicle trafficking). The present edition of Cytoskeleton provides new insights into the structure-functional features, dynamics, and cytoskeleton's relationship to diseases. The authors' contribution in this book will be of substantial importance to a wide audience such as clinicians, researches, educators, and students interested in getting updated knowledge about molecular basis of cytoskeleton, such as regulation of cell vital processes by actin-binding proteins as cell morphogenesis, motility, their implications in cell signaling, as well as strategies for clinical trial and alternative therapies based in multitargeting molecules to tackle diseases, that is, cancer.