3AJJ: Crystal Structure Of D(Cgcggatf5ucgcg): 5-FormyluridineGUANOSINE Base-Pair In B-Dna

Hydroxyl radicals are potent mutagens that attack DNA to form various base and ribose derivatives. One of the major damaged thymine derivatives is 5-formyluracil (fU), which induces pyrimidine transition during replication. In order to establish the structural basis for such mutagenesis, the crystal structures of two kinds of DNA d(CGCGRATfUCGCG) with R = A/G have been determined by X-ray crystallography. The fU residues form a Watson-Crick-type pair with A and two types of pairs (wobble and reversed wobble) with G, the latter being a new type of base pair between ionized thymine base and guanine base. In silico structural modeling suggests that the DNA polymerase can accept the reversed wobble pair with G, as well as the Watson-Crick pair with A.
PDB ID: 3AJJDownload
MMDB ID: 90112
PDB Deposition Date: 2010/6/7
Updated in MMDB: 2011/05
Experimental Method:
x-ray diffraction
Resolution: 3.02  Å
Source Organism:
Biological Unit for 3AJJ: dimeric; determined by author and by software (PISA)
Molecular Components in 3AJJ
Label Count Molecule
Nucleotide(1 molecule)
Molecule annotation
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Citing MMDB