Naslov
Specific molecular recognition of mixed nucleic acid sequences: An aromatic dication that binds in the DNA minor groove as a dimer

Autori
Wang, Lei ; Bailly, Christian ; Kumar, Arvind ; Ding, Daoyuan ; Bajić, Miroslav ; Boykin, David W ; Wilson, W David

Izvornik
Proceedings of the National Academy of Sciences of the United States of America (0027-8424) 97 (2000), 1; 12-16

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
base-pairs; distamycin; derivatives; nmr; D(cgcgaattcgcg) (2); Hoechst-33258; complexes; netropsin; ligands; agents

Sažetak
Phenylamidine cationic groups linked by a furan ring (furamidine) and related compounds bind as monomers to AT sequences of DNA. An unsymmetric derivative (DB293) with one of the phenyl rings of furamidine replaced with a benzimidazole has been found by quantitative footprinting analyses to bind to CC-containing sites on DNA more strongly than to pure AT sequences. NMR structural analysis and surface plasmon resonance binding results clearly demonstrate that DB293 binds in the minor groove at specific GC-containing sequences of DNA in a highly cooperative manner as a stacked dimer. Neither the symmetric bisphenyl nor bisbenzimidazole analogs of DB293 bind significantly to the CC containing sequences. DB293 provides a paradigm for design of compounds for specific recognition of mixed DNA sequences and extends the boundaries for small molecule-DNA recognition.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA