Protein 'comet tails' propel cell recycling process
Several well-known neurodegenerative diseases, such as Lou Gehrig's (ALS), Parkinson's, Alzheimer's, and Huntington's disease, all result in part from a defect in autophagy - one way a cell removes and recycles ...
Protein structure reveals how cells regulate their skeletons
Insight into the regulation of cell skeleton structure has come from a study conducted by A*STAR researchers. The work, which solved a protein structure that has eluded scientists for 20 years, should lead ...
Scientists uncover the nuclear life of actin
A key building block of life, actin is one of the most abundant and highly conserved proteins in eukaryotic cells.
Actin cytonauts at play in the cell
The rub with friction: Researchers uncover new rules of friction at microscopic level
Here's the rub with friction—scientists don't really know how it works. Sure, humans have been harnessing the power of friction since rubbing two sticks together to build the first fire, but the physics of friction remains ...
Mitosis mystery solved as role of key protein is confirmed
Researchers from Warwick Medical School have discovered the key role of a protein in shutting down endocytosis during mitosis, answering a question that has evaded scientists for half a century.
Study yields insights into how plant cells grow
A study by Purdue University plant scientists and University of Nebraska-Lincoln engineers advances our understanding of how plants control their shape and development at the cellular level.
Unlocking long-hidden mechanisms of plant cell division
Along with copying and splitting DNA during division, cells must have a way to break safely into two viable daughter cells, a process called cytokinesis. But the molecular basis of how plant cells accomplish ...
Cytoskeletons get a closer look
(Phys.org) —Rice University researchers have developed a theoretical approach to analyze the process by which protein building blocks form the biopolymer skeletons of living cells.
Gravity plays a role in keeping cells small
(Phys.org) —The effects of gravity are relevant when building houses or flying airplanes, but biologists have generally accepted that the average cell is too small for gravity to play a role in how it is ...
Building the ring to divide them all: Septin proteins bundle actin filaments into a ring
Researchers of the FOM Institute AMOLF and from Marseille and Paris have demonstrated that cells require a protein called septin to build a ring of actin filaments. This ring of proteins is crucial to drive ...
Biceps bulge, calves curve, 50-year-old assumptions muscled aside
The basics of how a muscle generates power remain the same: Filaments of myosin tugging on filaments of actin shorten, or contract, the muscle – but the power doesn't just come from what's happening straight ...
Axons' unexpected cytoskeleton structure
(Phys.org)—The plasma membranes that give cells their shapes are typically upheld by linear meshworks of the protein actin. In contrast, Howard Hughes Medical Institute scientists have now discovered that ...
Researchers define role of protein vinculin in cell movement
Researchers at the University of North Carolina and the National Institutes for Health have defined the role of the protein vinculin in enabling cell movement.