Loading
PDBj
MenuPDBj@FacebookPDBj@X(formerly Twitter)PDBj@BlueSkyPDBj@YouTubewwPDB FoundationwwPDBDonate
RCSB PDBPDBeBMRBAdv. SearchSearch help

159D

SIDE BY SIDE BINDING OF TWO DISTAMYCIN A DRUGS IN THE MINOR GROOVE OF AN ALTERNATING B-DNA DUPLEX

Summary for 159D
Entry DOI10.2210/pdb159d/pdb
DescriptorDNA (5'-D(*IP*CP*IP*CP*IP*CP*IP*C)-3'), DISTAMYCIN A, MAGNESIUM ION, ... (4 entities in total)
Functional Keywordsb-dna, double helix, complexed with drug, modified, dna
Total number of polymer chains1
Total formula weight2874.35
Authors
Chen, X.,Ramakrishnan, B.,Rao, S.T.,Sundaralingam, M. (deposition date: 1994-02-10, release date: 1995-02-07, Last modification date: 2024-02-07)
Primary citationChen, X.,Ramakrishnan, B.,Rao, S.T.,Sundaralingam, M.
Binding of two distamycin A molecules in the minor groove of an alternating B-DNA duplex.
Nat.Struct.Biol., 1:169-175, 1994
Cited by
PubMed Abstract: Here we report the 1.8A X-ray structure of a 2:1 drug-DNA complex between distamycin A and an alternating B-DNA octamer duplex d(ICICICIC)2. The two distamycin A molecules are bound side by side with dyad symmetry in an antiparallel orientation in the expanded minor groove. The amides of each drug molecule are hydrogen bonded to the minor groove base atoms of only one DNA strand. The complex not only shows binding of two drug molecules, but the DNA duplex also exhibits striking low-high alternations in the helical twist angles, the sugar puckering and the phosphate conformations, providing the basis for a new model for an alternating B-DNA with a dinucleotide repeat.
PubMed: 7656035
DOI: 10.1038/nsb0394-169
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (1.8 Å)
Structure validation

237992

数据于2025-06-25公开中

PDB statisticsPDBj update infoContact PDBjnumon