Supramolecular Porous Network Formed by Molecular Recognition between Chemically Modified Nucleobases Guanine and Cytosine

2010 ◽  
Vol 122 (49) ◽  
pp. 9563-9567 ◽  
Author(s):  
Wei Xu ◽  
Jian-guo Wang ◽  
Mikkel F. Jacobsen ◽  
Manuela Mura ◽  
Miao Yu ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Porous Network ◽  
Chemically Modified ◽  
Modified Nucleobases

Supramolecular Porous Network Formed by Molecular Recognition between Chemically Modified Nucleobases Guanine and Cytosine

2010 ◽  
Vol 49 (49) ◽  
pp. 9373-9377 ◽  
Author(s):  
Wei Xu ◽  
Jian-guo Wang ◽  
Mikkel F. Jacobsen ◽  
Manuela Mura ◽  
Miao Yu ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Porous Network ◽  
Chemically Modified ◽  
Modified Nucleobases

scholarly journals Non-Canonical Helical Structure of Nucleic Acids Containing Base-Modified Nucleotides

2021 ◽  
Vol 22 (17) ◽  
pp. 9552
Author(s):  
Thananjeyan Balasubramaniyam ◽  
Kwnag-Im Oh ◽  
Ho-Seong Jin ◽  
Hye-Bin Ahn ◽  
Byeong-Seon Kim ◽  
...  
Keyword(s):  
Nucleic Acids ◽  
Genetic Diseases ◽  
Helical Structure ◽  
Biological Functions ◽  
Modified Nucleotides ◽  
Helical Structures ◽  
Chemically Modified ◽  
Research Fields ◽  
G Quadruplex ◽  
Modified Nucleobases

Chemically modified nucleobases are thought to be important for therapeutic purposes as well as diagnosing genetic diseases and have been widely involved in research fields such as molecular biology and biochemical studies. Many artificially modified nucleobases, such as methyl, halogen, and aryl modifications of purines at the C8 position and pyrimidines at the C5 position, are widely studied for their biological functions. DNA containing these modified nucleobases can form non-canonical helical structures such as Z-DNA, G-quadruplex, i-motif, and triplex. This review summarizes the synthesis of chemically modified nucleotides: (i) methylation, bromination, and arylation of purine at the C8 position and (ii) methylation, bromination, and arylation of pyrimidine at the C5 position. Additionally, we introduce the non-canonical structures of nucleic acids containing these modifications.

Synthèse critique de la caractérisation électrochimique de zéolithes et d'aluminophosphates chimiquement modifiés

1998 ◽  
Vol 76 (12) ◽  
pp. 1886-1909 ◽  
Author(s):  
Lionel Roué ◽  
Emmanuel Briot ◽  
Fethi Bedioui
Keyword(s):  
Transition Metal ◽  
Transition Metal Complexes ◽  
Molecular Sieves ◽  
Inorganic Compounds ◽  
Electrochemical Process ◽  
Porous Network ◽  
Chemically Modified ◽  
Framework Species ◽  
Dimerization Process ◽  
Electrolyte Effects

Zeolites that have been chemically modified by incorporating transition metal complexes in their porous network and molecular sieves chemically modified by incorporating transition metal in their framework have led to numerous applications of which the most widespread is undoubtfully catalysis. However, the catalytic activity of these inorganic compounds is still not well understood and there is a lack of evidence concerning the encapsulation efficiency of complexes within the zeolites and the location of transition metals inside the framework of molecular sieves. Numerous studies have shown that zeolite encapsulation has an influence on the redox behaviour of these complexes, such as in preventing aggregation or the dimerization process. Moreover, analysis of the electrochemical process at this type of modified electrode demonstrates solvant and electrolyte effects on the electroactivity of the encapsulated complexes. However, these different studies highlighted the unsatisfactory electrochemical accessibility of intrazeolitic or framework species. Thus, we undertake here a discussion of the different strategies reported in the literature aimed at promoting the electroactivity of these molecular materials.

Chemically Modified Oxide Surfaces Capable of Molecular Recognition

2004 ◽  
Vol 66 (4) ◽  
pp. 387-399 ◽  
Author(s):  
G. V. Lisichkin ◽  
R. Yu. Novotortsev ◽  
S. Z. Bernadyuk
Keyword(s):  
Molecular Recognition ◽  
Oxide Surfaces ◽  
Chemically Modified
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