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Updated: Aug 18, 2026

Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes
Published on: November 1, 2012
Interaction of oligonucleotides with a single stranded DNA binding site of RecA protein
S Nakano1, M Sasaki, N Sugimoto
1Department of Chemistry, Faculty of Science, Konan University, Kobe, Japan.
Abstract:
Model peptide Ile-Arg-Met-Lys-Ile-Gly-Val-Met-Phe-Gly-Asn-Pro-Glu-Thr- Thr-Thr-Gly-Gly-Asn-Ala-Leu-Lys-Phe-Tyr for a single stranded DNA (ssDNA) binding site of RecA protein has been synthesized and its interaction with some ssDNAs and ssRNAs has been investigated. Circular dichroism spectra showed that conformational change of the peptide by the addition of a ssDNA dACCTAGTC was much faster than that by the addition of a ssRNA rACCUAGUC. The addition of a neutral DNA or a 2'-5' linked oligonucleotide did not lead to the conformational change of the peptide.
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