1b4y
From Proteopedia
| Line 4: | Line 4: | ||
|PDB= 1b4y |SIZE=350|CAPTION= <scene name='initialview01'>1b4y</scene> | |PDB= 1b4y |SIZE=350|CAPTION= <scene name='initialview01'>1b4y</scene> | ||
|SITE= | |SITE= | ||
| - | |LIGAND= | + | |LIGAND= <scene name='pdbligand=DA:2'-DEOXYADENOSINE-5'-MONOPHOSPHATE'>DA</scene>, <scene name='pdbligand=DC:2'-DEOXYCYTIDINE-5'-MONOPHOSPHATE'>DC</scene>, <scene name='pdbligand=DG:2'-DEOXYGUANOSINE-5'-MONOPHOSPHATE'>DG</scene>, <scene name='pdbligand=DT:THYMIDINE-5'-MONOPHOSPHATE'>DT</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1b4y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b4y OCA], [http://www.ebi.ac.uk/pdbsum/1b4y PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1b4y RCSB]</span> | ||
}} | }} | ||
| Line 31: | Line 34: | ||
[[Category: triple helix]] | [[Category: triple helix]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 18:53:43 2008'' |
Revision as of 15:53, 30 March 2008
| |||||||
| Ligands: | , , , | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
STRUCTURE AND MECHANISM OF FORMATION OF THE H-Y5 ISOMER OF AN INTRAMOLECULAR DNA TRIPLE HELIX.
Overview
H-DNA, thought to play a regulatory role in transcription, exists in two isomeric forms, H-y3 and H-y5. We present the first solution structure of a DNA fragment representing the H-y5 fold. The structure shows the H-y5 triple helix, and for the first time how in an H-DNA isomer the purine strand extension interacts with the triplex loop. It gives direct insight into the mechanism of H-DNA formation, and explains a host of biochemical and biophysical data on the relative stability of the H-DNA isomers. In addition, the observed interaction of the purine strand extension and the triplex loop provides new clues to the design of clamp-type triple helix-forming oligonucleotides.
About this Structure
1B4Y is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.
Reference
Structure and mechanism of formation of the H-y5 isomer of an intramolecular DNA triple helix., van Dongen MJ, Doreleijers JF, van der Marel GA, van Boom JH, Hilbers CW, Wijmenga SS, Nat Struct Biol. 1999 Sep;6(9):854-9. PMID:10467098
Page seeded by OCA on Sun Mar 30 18:53:43 2008
