## Abstract The BโtoโA conformational transition of calf thymus DNA fibers was followed employing Raman spectroscopy. The transition was induced by soaking DNA fibers in water/ethanol mixtures increasing from 60 to 85% ethanol (v/v). Intensity changes of 17 Raman vibrational bands were quantified i
The possible role of solitonic processes during A to B conformational changes in DNA
โ Scribed by Angshutosh Khan; Debajyoti Bhaumik; Binayak Dutta-Roy
- Publisher
- Springer
- Year
- 1985
- Tongue
- English
- Weight
- 522 KB
- Volume
- 47
- Category
- Article
- ISSN
- 1522-9602
No coin nor oath required. For personal study only.
โฆ Synopsis
Among the conformations which the DNA molecule can adopt, the transition beween the A and B families, controlled by water content (relative humidity), seems to be implicated in the transcription process. Focusing on the main structural difference involved (tilting of base normals with respect to the helix axis), a model is constructed, solitary wave solutions of the resulting equation of motion are demonstrated and possible experimental implications indicated.
๐ SIMILAR VOLUMES
## Synopsis Changes in the 31 P-nmr spectra of sonicated natural DNA fragments were investigated in ethanol solutions where the fragments underwent, as checked by CD, the B-to-A conformational transition. The study produced the following conclusions: (1) The high DNA concentrations used for the 31
## Abstract An intraperitoneal injection of the ฮฒโadrenergic agonist dlโisoproterenol hydrochloride (100 mg/Kg body weight) into a rat caused an early, very large (400โfold) cyclic AMP surge (peaking at 10 minutes) in the parotid gland which was followed by a second, much smaller (twoโfold) surge 1