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21.	Luyten, I, et al. (author) Determination of the ionization constants of C-nucleosides 1997 In: TETRAHEDRON. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0040-4020. ; 53:20, s. 6903-6906 Journal article (other academic/artistic)abstract We here report for the first time the ionization constant of 9-deazaadenosine (1) (pK(a) 6.0) as well as the third ionization constant for Formycin B (2) (pK(a) of 1.3) in addition to its two known pK(a)s of 8.8 and 10.4. (C) 1997 Elsevier Science Ltd.
22.	Luyten, I, et al. (author) Determination of the tautomeric equilibrium of Psi-uridine in the basic solution 1998 In: JOURNAL OF ORGANIC CHEMISTRY. - : AMER CHEMICAL SOC. - 0022-3263. ; 63:4, s. 1033-1040 Journal article (other academic/artistic)abstract The pD-dependent C-13 shift and (3)J(CH) of Psi-uridine have shown that the pK(a) of its N1 and N3 are 9.6 and 9.3, respectively. For the monoanionic Psi-uridine, the N1-anion population (64%) is favored over the N3-anion (36%), suggesting a larger prefer
23.	Luyten, I, et al. (author) The electronic nature of the aglycone dictates the drive of the pseudorotational equilibrium of the pentofuranose moiety in C-nucleosides 1998 In: NUCLEOSIDES & NUCLEOTIDES. - : MARCEL DEKKER INC. - 0732-8311. ; 17:9-11, s. 1605-1611 Journal article (other academic/artistic)abstract We herein show for the first time that the specific electronic character of a C-aglycone dictates the thermodynamic preference of the two-state N reversible arrow S pseudorotational equilibrium to either N- or S-type sugar. As the electron-deficiency of t
24.	Luyten, I, et al. (author) The strength of the anomeric effect in adenosine, guanosine, and in their 2'-deoxy counterparts is medium-dependent 1997 In: JOURNAL OF ORGANIC CHEMISTRY. - : AMER CHEMICAL SOC. - 0022-3263. ; 62:25, s. 8800-8808 Journal article (other academic/artistic)abstract In nucleosides, the anomeric effect (AE) (i.e. stereoelectronic n(O4')-->sigma*(C1'-N9) interactions) places the aglycon in the pseudoaxial orientation in the N-type conformation (2'-exo-3'-endo), whereas the inherent steric effect of the nucleobase oppos
25.	Luyten, I, et al. (author) The tunable transmission of the aromatic character of the aglycone through the anomeric effect in C-nucleosides drives its own sugar conformation: A thermodynamic study 1997 In: TETRAHEDRON. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0040-4020. ; 53:18, s. 6433-6464 Journal article (other academic/artistic)abstract The anomeric and the gauche effects are two competing stereoelectronic forces that drive the North (N) (C2'-exo-C3'-endo) reversible arrow South (S) (C2'-endo-C3'-exo) pseudorotational equilibrium in nucleosides (ref 1). The quantitation of the energetics
26.	MALTSEVA, TV, et al. (author) BASE-PAIR EXCHANGE KINETICS OF THE IMINO AND AMINO PROTONS OF THE 3'-PHENAZINIUM TETHERED DNA-RNA DUPLEX, R((5')GAUUGAA(3'))-D((5')TCAATC(3')-PZN), AND THEIR COMPARISON WITH THOSE OF B-DNA DUPLEX 1995 In: JOURNAL OF BIOCHEMICAL AND BIOPHYSICAL METHODS. - : ELSEVIER SCIENCE BV. - 0165-022X. ; 30:2-3, s. 163-177 Journal article (other academic/artistic)abstract The dynamics of the opening-closing of the constituent base-pairs as well as of the exchange kinetics of the base-paired imino and amino protons with water in a DNA-RNA hybrid, [(5')r(G(1)A(2)U(3)U(4)G(5)A(6)A(7))(3')]:(5')p[d(T(8)C(9)A(10)A(11)T(12)C-13)
27.	Maltseva, TV, et al. (author) Elucidation of the origin of NOEs and ROEs that show the hydration in the minor and major grooves of DNA duplex with ATTAAT tract by a combination of NOESY and ROESY experiments 1998 In: NUCLEOSIDES & NUCLEOTIDES. - : MARCEL DEKKER INC. - 0732-8311. ; 17:9-11, s. 1617-1634 Journal article (other academic/artistic)abstract A combination of NOESY and ROESY experiments (using ammonia as a catalyst across the pH range of 5 to 8.6) has given us a clear understanding regarding the origin of nOes that are attributed to the stereochemical location and the residence time of water i
28.	Maltseva, TV, et al. (author) Measurement of T-1 relaxation rates of natural abundant C-13 at C2 ' in a non-uniformly deuterium-labelled oligo-DNA 1998 In: JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2. - : ROYAL SOC CHEMISTRY. - 0300-9580. ; :12, s. 2689-2694 Journal article (other academic/artistic)abstract The T-1 relaxation rate of C2' at natural abundance of four different stereoselectively C2' deuterio-labelled nucleotide residues [2'-H-2 (S): similar to 85 atom% H-2, 2"-H-2 (R): similar to 15 atom% H-2: 3'- and 5'/5"-H-2: >97 atom% 2H; 4'-H-2: similar t
29.	Maltseva, TV, et al. (author) Measurement of the deuterium relaxation times in double-labeled (C-13/H-2) thymidine and 2 '-deoxyadenosine and in the selectively labeled DNA duplex (5)' d((1)C(2)G(3)(A)under-bar(4)(T)under-bar(5)(T)under-bar(6)(A)under-bar(7)(A)under-bar(8)(T)under-bar 1999 In: MAGNETIC RESONANCE IN CHEMISTRY. - : JOHN WILEY & SONS LTD. - 0749-1581. ; 37:3, s. 203-213 Journal article (other academic/artistic)abstract The T-1 and T1-rho of deuterium in C-13/H-2 double-labeled 2'(R/S),5'(R/S)-H-2(2)-1',2',3',4',5'-C-13(5)-2'-deoxyadenosine and the corresponding thymidine derivative as well as in the non-uniformly labeled (shown in bold and underlined) DNA duplex, d(5)'(
30.	Maltseva, TV, et al. (author) Partially-deuterated oligo-DNA reduces overcrowding, enhances resolution and sensitivity and provide improved NMR constraints for structure elucidation of oligo-DNA 1998 In: TETRAHEDRON. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0040-4020. ; 54:48, s. 14515-14528 Journal article (other academic/artistic)abstract The usefulness of the "NMR-window III" approach (see ref. 2e) has been demonstrated through the use of the deuterio isotopomeric 12mer oligo-DNA duplex obtained from protected partially deuterated 2'((R) under bar/(S) under bar), 3', 5'((R) under bar/(S)

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Type of publication: journal article (61); review (3); reports (1)

Type of content: other academic/artistic (65)Undo refine

Author/Editor: Chattopadhyaya, ... (65)Undo refine; Foldesi, A (18); Maltseva, TV (17); Thibaudeau, C (14); Acharya, S (6); Sandstrom, A (6); show more...; Zamaratski, E (6); Sund, C (6); Acharya, P (5); Földesi, A (4); Trifonova, A (4); Agback, P (4); Maltseva, T. (3); Matsuda, A (3); Zarytova, VF (3); Kumar, A. (2); Cheruku, P (2); Isaksson, J (2); PAPCHIKHIN, A (2); Ugi, I (2); Denisov, AY (2); Ivanova, EM (2); Bekiroglu, S (2); Altmann, KH (2); Luo, X. (1); Pradeepkumar, P.I. (1); Chatterjee, S (1); Karthick Babu, S (1); Nawrot, B (1); Sprinzl, M (1); Eriksson, S. (1); Werner, B (1); Polak, M (1); Lorenz, K (1); BURKHART, BM (1); SUNDARALINGAM, M (1); Plashkevych, O. (1); Changalov, M M (1); Ivanova, G D (1); Rangelov, M A (1); Minakawa, N (1); Stoineva, I B (1); Yomtova, V M (1); Roussev, C D (1); Petkov, D.D. (1); Domling, A (1); Richter, W (1); Kim, T. K. (1); Pyshnyi, DV (1); Zamaratski, EV (1); show less...

University: Uppsala University (65)Undo refine

Language: English (65)Undo refine

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