2D DNA lattices constructed from two-tile DAE-O systems possessing circular central strands.
We reported a classical two-tile system of DAE-O (doublecrossover, antiparallel, and even half-turns tiles with odd half-turns connection) to construct regular single crystalline 2D (two dimensional) DNA lattices, using pre-circularised oligonucleotides of 42-, 64-, and 84-nt (nucleotides) as the central looped strands in DAE tiles respectively. DAE tiles with 42- and 64-nt as central strands, either in circular form or in linear form, grew regular single crystalline lattices well. However DAE tiles including a circular 84-nt as the central strand grew single crystalline lattices, those including a linear 84-nt as the central strand grew polycrystalline 2D lattices. A subtle difference in the lateral rigidity of DAE tiles with regard to the duplex axis was suggested to be the cause of the morphological difference.
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, Jiangsu, China. sjxiao@nju.edu.cn.
Meng
M
Wang
Haofu
H
Huang
Zhengchu
Z
Zhang
Shou-Jun
SJ
Xiao