1987
DOI: 10.1016/s0021-9258(18)61093-2
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Oligodeoxynucleotides containing synthetic abasic sites. Model substrates for DNA polymerases and apurinic/apyrimidinic endonucleases.

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Cited by 393 publications
(142 citation statements)
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“…Overall, the structures of the abasic sites, excluding the unprotonated N moiety, are very similar. It is worth noting that these findings support the biochemical evidence (22) indicating that F serves as an effective analog of a natural AP site.…”
Section: Structures Of Abasic Sites As Determined By Quantum Chemistrysupporting
confidence: 84%
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“…Overall, the structures of the abasic sites, excluding the unprotonated N moiety, are very similar. It is worth noting that these findings support the biochemical evidence (22) indicating that F serves as an effective analog of a natural AP site.…”
Section: Structures Of Abasic Sites As Determined By Quantum Chemistrysupporting
confidence: 84%
“…Several substrate modifications have been employed to identify DNA elements that are important for recognition and/or incision (22)(23)(24)(25). The human enzyme requires at least 4 bp 5′ and at least 3 bp 3′ of an AP site for incision and makes contacts within both the minor and major groove and with both strands of DNA around the lesion (24,25).…”
Section: Introductionmentioning
confidence: 99%
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“…The aldehydic form, however, represents Ͻ1% of the mixture (Manoharan et al, 1988;Wilde et al, 1989). In many studies (Millican et al, 1984;Takeshita et al, 1987), this intrinsic instability of the abasic site is avoided using a 3-hydroxy-3 (hydroxymethyl) tetrahydrofuran analog, and this choice has also been made in the present modeling study. The reader is also referred to a recent NMR study of abasic bulges, which was also carried out with a tetrahydrofuran analog (Lin et al, 1998).…”
Section: Introductionmentioning
confidence: 99%
“…Thus, when the polymerase stalls at a DNA lesion at a replication fork, the efficiency of nucleotide insertion is compromised, and the effect may extend to several 5'-downstream nucleotides. [10,11] When a natural AP site or a tetrahydrofuran derivative (used frequently as a model abasic site because of its good stability; [12] Figure 1 a) is bypassed, dAMP is preferentially inserted, followed by dGMP (deoxyguanosine monophosphate) and dCMP (deoxycytidine monophosphate) or dTMP. [8,9] Structural studies of AP site-containing DNA duplexes show that these duplexes maintain B-DNA geometry, with only localized perturbations at the lesion site increasing DNA flexibility.…”
mentioning
confidence: 99%