منابع مشابه
A Close Look at Proteins
Proteins, macromolecules of almost unmatched complexity, display highly specific functionalities only when folded into a distinct three-dimensional (3d) configuration. Protein folding, a complex self-assembly process, thus links the protein’s functionality to the atomic arrangement of the peptide chain. Consequently the protein’s three-dimensional shape as well as its peptide sequence are of pi...
متن کاملTaking a close look at electrosensing
The brain of the brown ghost knifefish, which uses electric fields to "see", processes electrical signals in a way that is similar to how our brains interpret visual and auditory signals.
متن کاملA close look at therapeutic touch.
CONTEXT Therapeutic Touch (TT) is a widely used nursing practice rooted in mysticism but alleged to have a scientific basis. Practitioners of TT claim to treat many medical conditions by using their hands to manipulate a "human energy field" perceptible above the patient's skin. OBJECTIVE To investigate whether TT practitioners can actually perceive a "human energy field." DESIGN Twenty-one...
متن کاملA close look at wiggly chromosomes.
In a recent issue of Cell, Fisher et al. (2013) use high-resolution time-lapse imaging to peer into bacterial genome (nucleoid) structure. The nucleoid, an elastic filament confined via an internal network, undergoes periodic fluctuations critical in relieving tension. Programmed tethers and their release highlight a primordial mechanical cycle for chromosome segregation.
متن کاملA close-up look at the spliceosome, at last.
Major developments in cryo-electron microscopy in the past three or four years have led to the solution of a number of spliceosome structures at high resolution, e.g., the fully assembled but not yet active spliceosome (Bact), the spliceosome just after the first step of splicing (C), and the spliceosome activated for the second step (C*). Therefore 30 years of genetics and biochemistry of the ...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2008
ISSN: 1742-6596
DOI: 10.1088/1742-6596/131/1/012035