Porphyrins as spectroscopic sensors for conformational studies of DNA

Milan Balaz, Klaus Bitsch-Jensen, Angela Mammana, George A. Ellestad, Koji Nakanishi, Nina Berova

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


Molecular systems containing two or more interacting porphyrins show remarkable spectroscopic features that allow for a very sensitive detection of conformational changes on the microscale level by different methods, such as fluorescence and electronic circular dichroism (ECD). Covalent porphyrin-DNA assemblies can provide a CD profile (exciton couplet) within the porphyrin Soret band region which is very diagnostic for DNA conformational changes. Additionally, covalently linked porphyrins have been shown to function as DNA molecular caps and to stabilize the non-self-complementary non-Watson-Crick guanine-adenine DNA sequence via their strong π-π stacking.

Original languageEnglish
Pages (from-to)801-809
Number of pages9
JournalPure and Applied Chemistry
Issue number4
Publication statusPublished - 2007 Apr

Bibliographical note

Funding Information:
This work is supported in part by NIH and NSF, USA.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)


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