Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Attila Szemzo"'
Autor:
L. Kovács, Béla Fekete, András Falus, Attila Szemzo, Klára Tamássy, Katalin Pálóczi, Valeria Lia Varga, János Sági
Publikováno v:
Immunology Letters. 58:181-190
Based on cDNA sequence data epsilon chain-specific antisense oligonucleotides were synthesized and checked on in vitro IgE production. Using peripheral blood cells from a hypereosinophilic patient and a human IgE myeloma cell line, U266, marked reduc
Publikováno v:
Journal of Biomolecular Structure and Dynamics. 13:999-1006
X-form is an unusual double helix of DNA adopted by poly(dA-dT) or (dT-dA)4 at high concentrations of CsF. On the other hand, poly(dA), poly(dT), (dA-dT)4 and most other DNAs do not adopt this conformer. Here we demonstrate that the X-form is strongl
Publikováno v:
International Journal of Biological Macromolecules. 17:239-246
Acyclic analogues of oligothymidylate and oligoadenylate and their alternating copolymers were synthesized to study their thermal melting, their stability against snake venom phosphodiesterase and their primer/template properties using the Klenow fra
Autor:
László Ötvös, Janos Sagi, Eva Ruff, Gyula Sági, Attila Szemzo, Katalin Ebinger, Anna Szabolcs
Publikováno v:
Tetrahedron Letters. 34:2191-2194
Properties of oligodeoxynucleotides essential for the antisense effect can be favourably modified by substitution of the heterocyclic base moiety. This is shown here for duplex stability by 5 alkyl, 5-(1-alkenyl) and 5-(1-alkynyl) substitution of the
Publikováno v:
Journal of Chromatography A. 506:35-44
A series of 5-alkyl-, 5-alkenyl- and 5-alkynyl-substituted deoxyuridines and their triphosphate derivatives were synthesized and studied in DNA polymerase reactions. The initial rate of incorporation of the derivatives catalysed by Klenow fragment DN
Publikováno v:
Tetrahedron Letters. 31:1463-1466
5'-O-(dimethoxytrityl)-(+)-carbocyclic thymidine 1 is converted into different 3'-substituted intermediates 2a-c following standard procedures. From these compounds stereochemically pure carbocyclic oligothymidylates 4 are obtained using solid phase
Publikováno v:
Nucleic Acids Research. 18:2133-2140
We report here spectroscopic and biochemical data of a novel series of sugar-modified oligodeoxy-nucleotides, the carbocyclic oligothymidylates, c(dT)3-20. In c(dT)n a methylene group has been substituted for the oxygen atom of the deoxyribose ring o
Publikováno v:
Nucleosidesnucleotides. 18(6-7)
Two series of alternating ODNs containing 5-n.alkyl-, alkenyl- and alkynyl-dU and -dC units have been prepared in order to study the kinetics of their hydrolysis by SV PDE and human serum, respectively. Both in (r5dUpdA)10 and (r5dCpdG)6 series the r
Some biochemical properties of an acyclic oligonucleotide analogue. A plausible ancestor of the DNA?
Publikováno v:
Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life. 23(2)
As acyclic oligonucleotides have been suggested as a primitive model of DNA or RNA in prebiotic times, we compared some biochemical properties of these analogues to that of natural ones. Firstly, an acyclic analogue of deoxyribonucleoside triphosphat
Publikováno v:
International journal of biological macromolecules. 13(6)
The B-to-Z conformational transition of poly(dG-dC) is highly promoted by 5-methyl substitution of the dC moiety, i.e. in poly(dG-methyl5dC). By the synthesis of a new poly(dG-dC) analogue, poly(dG-ethyl5dC), the effect of a longer alkyl-chain substi