Life, death and membrane bilayers

Life, death and membrane bilayers.

Membrane bilayers are essential elements of life, and the synthesis of the hydrocarbons that make up membrane bilayers may have preceded the appearance of life on Earth. Membrane-associated processes are significant components of metabolism, and the acyl composition of membrane bilayers is associated with metabolic activity in a predictable manner. This has resulted in the "membrane pacemaker" ...

Life and death: metabolic rate, membrane composition, and life span of animals.

Maximum life span differences among animal species exceed life span variation achieved by experimental manipulation by orders of magnitude. The differences in the characteristic maximum life span of species was initially proposed to be due to variation in mass-specific rate of metabolism. This is called the rate-of-living theory of aging and lies at the base of the oxidative-stress theory of ag...

Membrane Curvature: How BAR Domains Bend Bilayers

An important new structure suggests the BAR domain is a membrane-binding module that can both produce and sense membrane curvature. BAR resembles a banana that binds membranes electrostatically through its positively charged, concave surface.

Comparison of Quality of Life, Life Satisfaction and Death Anxiety among Intra-Oriented and Outward Elderly

The purpose of this study was to compare the quality of life, life satisfaction, and death anxiety among internally oriented and out-of-home elderly in the home and home of the elderly in Kermanshah in 1396. The statistical population of the study included all elderly people in Kermanshah. A total of 168 people were selected through cluster sampling and elderly residents of the elderly in an ac...

Relitigating life and death.