7SB8
d(GA(CGA)5) parallel-stranded homo-duplex
Summary for 7SB8
| Entry DOI | 10.2210/pdb7sb8/pdb |
| Related | 7SB9 |
| Descriptor | GA(CGA)5, STRONTIUM ION, SODIUM ION, ... (5 entities in total) |
| Functional Keywords | triplet repeat dna, parallel-stranded duplex, non-canonical dna, d(cga), dna |
| Biological source | synthetic construct |
| Total number of polymer chains | 6 |
| Total formula weight | 33661.31 |
| Authors | Luteran, E.M.,Paukstelis, P.J. (deposition date: 2021-09-24, release date: 2021-10-06, Last modification date: 2023-10-18) |
| Primary citation | Luteran, E.M.,Paukstelis, P.J. The parallel-stranded d(CGA) duplex is a highly predictable structural motif with two conformationally distinct strands. Acta Crystallogr D Struct Biol, 78:299-309, 2022 Cited by PubMed Abstract: DNA can adopt noncanonical structures that have important biological functions while also providing structural diversity for applications in nanotechnology. Here, the crystal structures of two oligonucleotides composed of d(CGA) triplet repeats in the parallel-stranded duplex form are described. The structure determination of four unique d(CGA)-based parallel-stranded duplexes across two crystal structures has allowed the structural parameters of d(CGA) triplets in the parallel-stranded duplex form to be characterized and established. These results show that d(CGA) units are highly uniform, but that each strand in the duplex is structurally unique and has a distinct role in accommodating structural asymmetries induced by the C-CH base pair. PubMed: 35234144DOI: 10.1107/S2059798322000304 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.317 Å) |
Structure validation
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