Abstract：
:A hairpin structure contains two conformationally distinct domains: a double-helical stem with Watson-Crick base pairs and a single-stranded loop that connects the two arms of the stem. By extensive 1D and 2D 500-MHz 1H NMR studies in H2O and D2O, it has been demonstrated that the DNA oligomers d(CGCCGCAGC) and d(CGCCGTAGC) form hairpin structures under conditions of low concentration, 0.5 mM in DNA strand, and low salt (20 mM NaCl, pH 7). From examination of the nuclear Overhauser effect (NOE) between base protons H8/H6 and sugar protons H1' and H2'/H2", it was concluded that in d(CGCCGCAGC) and d(CGCCGTAGC) all the nine nucleotides display average (C2'-endo,anti) geometry. The NMR data in conjunction with molecular model building and solvent accessibility studies were used to derive a working model for the hairpins.
journal_name
Biochemistryjournal_title
Biochemistryauthors
Gupta G,Sarma MH,Sarma RH,Bald R,Engelke U,Oei SL,Gessner R,Erdmann VAdoi
10.1021/bi00398a027subject
Has Abstractpub_date
1987-12-01 00:00:00pages
7715-23issue
24eissn
0006-2960issn
1520-4995journal_volume
26pub_type
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