Tag Archives: actin

Cell Movement: It’s all a balancing act!

Although it may appear solid, the human body is full of moving cells. For example, the mass migration of cells helps shape the human body in the womb. Skin cells crawl towards each other during wound healing

How cells crawl… that’s right, crawl

Within our bodies, every cell must crawl – some only a few millionths of an inch, while others, like nerve fibers, must make their way from the spinal cord to the tips of our toes. The ability

Guanine-nucleotide exchange factor that promotes loss of polygonal cell shape

Actin cytoskeleton dynamics determines cell shape and movement. Fibroblasts or epithelial cells, for instance, adhere and spread onto planar surfaces adopting an elongated polygonal shape. Underneath the cytoplasmic membrane, local activation of small GTPase enzymes of the

Muscling in on molecular machines

The concept of a “power stroke” – a free-energy releasing shape change of a protein – appears in almost every textbook that deals with the molecular details of muscle, bacterial flagella, and many other bio-molecular machines. Researchers