In:
FEBS Letters, Wiley, Vol. 314, No. 1 ( 1992-12-07), p. 29-32
Abstract:
Analogues of the homopyrimidine oligonucleotide dT 15 that contained phosphorothioate bonds of a mixture of diastereoisomers or one of the two stereoisomers (either Rp or Sp) were synthesized. The analogues were mixed under conditions conducive to the formation of triple‐stranded assemblies. The mixtures were characterized by their thermal stabilities ( T m values), CD spectra, and gel electrophoresis pattern. The 34‐mer duplexes containing 15 central purines on one strand and 15 complementary pyrimidines on the other strand gave no detectable triple helix upon combination with dT 15 S 14 . On the other hand, 34‐bp duplexes with dT 15 S 1 , having Rp or Sp, formed triple helixes. This suggests that a steric factor plays an important role in triple helix formation.
Type of Medium:
Online Resource
ISSN:
0014-5793
,
1873-3468
DOI:
10.1016/0014-5793(92)81454-T
Language:
English
Publisher:
Wiley
Publication Date:
1992
detail.hit.zdb_id:
1460391-3
SSG:
12
Permalink