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Volumn 119, Issue 20, 1997, Pages 4640-4649

Theoretical and experimental study of isoguanine and isocytosine: Base pairing in an expanded genetic system

Author keywords

[No Author keywords available]

Indexed keywords

CYTOSINE; GUANINE;

EID: 0031004327     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja970123s     Document Type: Article
Times cited : (130)

References (95)
  • 6
    • 0003604405 scopus 로고
    • Cold Spring Harbor Press: Plainview, NY
    • Joyce, G. F.; Orgel, L. E. The RNA World; Cold Spring Harbor Press: Plainview, NY, 1993; 1-25.
    • (1993) The RNA World , pp. 1-25
    • Joyce, G.F.1    Orgel, L.E.2
  • 46
    • 0003075565 scopus 로고
    • On the Problems of Evolution and Biochemical Information Transfer
    • Kasha, M., Pullman. B., Eds.; Academic Press: New York
    • Rich, A. On the Problems of Evolution and Biochemical Information Transfer. In Horizons in Biochemistry; Kasha, M., Pullman. B., Eds.; Academic Press: New York, 1962; pp 103-126.
    • (1962) Horizons in Biochemistry , pp. 103-126
    • Rich, A.1
  • 69
    • 1842267419 scopus 로고    scopus 로고
    • note
    • Note that the 6-31G ** energies for the N3-H and N1-H amino oxo tautomers of isocytosine in refs 48 and 49 differ by 10.8 kcal/mol. Examination of the data for the other tautomers in ref 49 suggested that the data for the N3-H and N1-H amino oxo tautomers of isocytosine were transposed. This was confirmed by reproducing the calculations (Table 4). Calculations in Table 4 were performed in this work unless otherwise noted.
  • 81
    • 0001612830 scopus 로고
    • Katritzky, A. R., Boulton, A. J., Eds.; Academic Press: New York
    • For a review, see: Kwiatkowski, J. S.; Pullman, B. In Advances in Heterocyclic Chemistry; Katritzky, A. R., Boulton, A. J., Eds.; Academic Press: New York 1975; Vol. 18, pp 200-327.
    • (1975) Advances in Heterocyclic Chemistry , vol.18 , pp. 200-327
    • Kwiatkowski, J.S.1    Pullman, B.2
  • 88
    • 1842274263 scopus 로고    scopus 로고
    • note
    • The free energy difference for the U/G pair in the nonamer duplex (entry 18, Table 2) appears to be anomalously large (4.2 kcal/mol). It is not clear at this time why this is so, but further investigation did show that inverting the U/G pair to G/T (entry 15) yielded a free energy difference similar to that obtained in the dodecamer duplex for U/G (3.0 vs 2.5 kcal/ mol, entry 7 vs 15). The fact that the free energy differences between the standard Watson-Crick pairs GIC and A/U (entries 11 and 13) is as expected, serves as a control for the integrity of the G and U bearing oligomers used for entry 18 of Table 2.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.