Results 331 to 340 of about 438,619 (385)

Infrared Studies on the Backbone Conformation of Nucleic Acids

Israel Journal of Chemistry, 1974
AbstractThe presence and assignment of low frequency infrared bands characteristic of the A, B and C forms of DNA (Salmon Sperm and Micrococcus Lysodeikticus) and of synthetic poly (dA‐T): (dA‐T) and of polyribonucleotides‐A form are considered. The vibrational modes that may arise from the phosphate diester stretch of DNA backbone are investigated in ...
J. Brahms, S. Brahms, J. Pilet
openaire   +3 more sources

Limited proteolysis as a probe of the conformation and nucleic acid binding regions of nucleolin.

Biochemistry, 1990
Nucleolin, also called protein C23, is a RNA-associated protein implicated in the early stages of ribosome assembly. To study the general conformation and map the nucleic acid binding regions, rat nucleolin was subjected to limited proteolysis using ...
M. Olson, M. Kirstein, M. O. Wallace
semanticscholar   +1 more source

Protein-nucleic acid interactions and DNA conformation in a complex of human immunodeficiency virus type 1 reverse transcriptase with a double-stranded DNA template-primer.

Biopolymers, 1997
The conformation of the DNA and the interactions of the nucleic acid with the protein in a complex of human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) and 19-mer/18-mer double-stranded DNA template-primer (dsDNA) are described.
Jianping Ding, S. Hughes, Edward A Arnold   +2 more
semanticscholar   +1 more source

Conformation of Viral Nucleic Acids in Situ

1969
Publisher Summary The problems that are discussed in this chapter are confined to viruses, and to be more exact, to the question of similarities and differences between the structure and properties of usual forms of nucleic acids in solution and that of nucleic acids inside viral particles.
openaire   +3 more sources

NMR of proteins and nucleic acids

, 1988
Introduction and Survey. THE FOUNDATIONS: STRUCTURE AND NMR OF BIOPOLYMERS. NMR of Amino Acid Residues and Mononucleotides. NMR Spectra of Proteins and Nucleic Acids in Solution. The NMR Assignment Problem in Biopolymers.
K. Wüthrich
semanticscholar   +1 more source

Conformational principles of nucleic acids

1981
From a conformational standpoint, nucleic acids are enormously complex. In order to rigorously describe, for example, the secondary structure of a repeating polynucleotide such as fibrous poly dA·dT, the values of twelve torsion angles must be ascertained (Figure 1.1); contrast this with a repeating polypeptide where only two conformation angles need ...
openaire   +2 more sources

Recent Advances in Chain Conformation and Bioactivities of Triple-helix Polysaccharides.

Biomacromolecules, 2020
Natural polysaccharides derive from renewable biomass sources, and are regarded as environmentally friendly and sustainable polymers. As the third abundant biomacromolecule after protein and nucleic acid in nature, polysaccharides are also closely ...
Y. Meng, Fengzhi Lyu, Xiaojuan Xu, Lina Zhang   +3 more
semanticscholar   +1 more source

Conformational geometry and vibrational frequencies of nucleic acid chains

Biopolymers, 1975
AbstractNormal coordinate analysis of diethyl phosphate has been made, which predicts all observed Raman frequencies in the range 170–1300 cm−1. The force constants from this calculation have been transferred to a vibrational calculation for a simplified model of the backbone of nucleic acids, which also involves the OPO2−O phosphate group and the ...
Ellen B. Brown, Warner L. Peticolas
openaire   +3 more sources

Characterization of dipyridophenazine complexes of ruthenium(II): the light switch effect as a function of nucleic acid sequence and conformation.

Biochemistry, 1992
Spectroscopic parameters for two novel ruthenium complexes on binding to nucleic acids of varying sequences and conformations have been determined. These complexes, Ru(bpy)2dppz2+ and Ru(phen)2dppz2+ (bpy = 2,2'-bipyridine; phen = 1,10-phenanthroline ...
Y. Jenkins, A. Friedman, N. Turro, J. Barton   +3 more
semanticscholar   +1 more source

Nucleic acid-triggered NADase activation of a short prokaryotic Argonaute.

Nature, 2023
Xiaopan Gao, Kun Shang, Kaixiang Zhu, Linyue Wang, Z. Mu, Xingke Fu, Xia Yu, B. Qin, Hongtao Zhu, Wei Ding, Sheng Cui   +10 more
semanticscholar   +1 more source