Researchers report the structure of a key long-chain lipid in the tear film lipid layer, which prevents tears from drying out. Their finding may be used to improve treatments for dry eye. As anyone ...

The three-dimensional structure adopted by biological macromolecules largely determines their role in different cellular processes. Several different imaging techniques ranging from X-ray ...

Apoptosis, a form of programmed cell death, is a stepwise process essential for normal tissue function and homeostasis. Dysregulated apoptosis intimately associates with the development of cancer, ...

Macromolecule structure Macromolecules are usually considered to be biopolymers with a mass larger than 5,000 Da and are a central constituent of living matter.1 The disposition of the different atoms ...

Chemistry is the study of matter and its behavior. The chemistry of life involves four main types of macromolecules: carbohydrates, lipids, proteins, and nucleic acids, which are essential building ...