237d
From Proteopedia
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|PDB= 237d |SIZE=350|CAPTION= <scene name='initialview01'>237d</scene>, resolution 2.500Å | |PDB= 237d |SIZE=350|CAPTION= <scene name='initialview01'>237d</scene>, resolution 2.500Å | ||
|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=237d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=237d OCA], [http://www.ebi.ac.uk/pdbsum/237d PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=237d RCSB]</span> | ||
}} | }} | ||
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[[Category: intermolecular base triplet]] | [[Category: intermolecular base triplet]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 01:44:56 2008'' |
Revision as of 22:44, 30 March 2008
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| , resolution 2.500Å | |||||||
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| Ligands: | , , , | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE OF A DNA DECAMER SHOWING A NOVEL PSEUDO FOUR-WAY HELIX-HELIX JUNCTION
Overview
The crystal structure of the decanucleotide d(CGCAATTGCG)2 has been solved by a combination of molecular replacement and heavy-atom procedures and has been refined to an R factor of 20.2% at 2.7 A. It is not a fully base-paired duplex but has a central core of eight Watson-Crick base pairs flanked by unpaired terminal guanosines and cytosines. These participate in hydrogen-bonding arrangements with adjacent decamer duplexes in the crystal lattice. The unpaired guanosines are bound in the G+C regions of duplex minor grooves. The cytosines have relatively high mobility, even though they are constrained to be in one region where they are involved in base-paired triplets with G.C base pairs. The 5'-AATT sequence in the duplex region has a narrow minor groove, providing further confirmation of the sequence-dependent nature of groove width.
About this Structure
237D is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.
Reference
Crystal structure of a DNA decamer showing a novel pseudo four-way helix-helix junction., Spink N, Nunn CM, Vojtechovsky J, Berman HM, Neidle S, Proc Natl Acad Sci U S A. 1995 Nov 7;92(23):10767-71. PMID:7479880
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