446d: Difference between revisions
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[[Image:446d.gif|left|200px]] | [[Image:446d.gif|left|200px]] | ||
'''STRUCTURE OF THE OLIGONUCLEOTIDE D(CGTATATACG) AS A SITE SPECIFIC COMPLEX WITH NICKEL IONS''' | {{Structure | ||
|PDB= 446d |SIZE=350|CAPTION= <scene name='initialview01'>446d</scene>, resolution 3.000Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=NI:NICKEL (II) ION'>NI</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''STRUCTURE OF THE OLIGONUCLEOTIDE D(CGTATATACG) AS A SITE SPECIFIC COMPLEX WITH NICKEL IONS''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
446D is a [ | 446D is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=446D OCA]. | ||
==Reference== | ==Reference== | ||
Structure of the oligonucleotide d(CGTATATACG) as a site-specific complex with nickel ions., Abrescia NG, Malinina L, Fernandez LG, Huynh-Dinh T, Neidle S, Subirana JA, Nucleic Acids Res. 1999 Apr 1;27(7):1593-9. PMID:[http:// | Structure of the oligonucleotide d(CGTATATACG) as a site-specific complex with nickel ions., Abrescia NG, Malinina L, Fernandez LG, Huynh-Dinh T, Neidle S, Subirana JA, Nucleic Acids Res. 1999 Apr 1;27(7):1593-9. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10075989 10075989] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Abrescia, N G.A.]] | [[Category: Abrescia, N G.A.]] | ||
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[[Category: triple helix]] | [[Category: triple helix]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 19:08:21 2008'' | ||
Revision as of 17:08, 20 March 2008
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| 446d, resolution 3.000Å | |||||||||||||
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| Ligands: | NI | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
STRUCTURE OF THE OLIGONUCLEOTIDE D(CGTATATACG) AS A SITE SPECIFIC COMPLEX WITH NICKEL IONS
Overview
In this paper we explore the application of Ni2+to the crystallization of oligonucleotides. We have determined in this way the structure of a fully alternating (Y-R) decanucleotide d(CGTATATACG) by single crystal X-ray diffraction. This is the first oligonucleotide crystal structure with an alternating 5'-(TA)3-3' central part. Alternating oligonucleotides have a particular interest since they often have a unique structure. In this case the general conformation is B-like with an alternating twist and an end-to-end interaction which involves terminal guanines. The crystal belongs to space group P41212 with a = b = 52.46, c = 101.49 A. This packing imposes a 90 degrees crossing of the symmetry related helices. This is a new way of packing for decamers.The oligonucleotide structure is characterized by the specific association with seven nickel ions, involving the N7 atom of every guanine. One of the Ni2+ions is shared between two guanines of symmetry related molecules. Until now no oligonucleotide has been crystallized in the presence of this metal ion. A novel C.A.T triplet structure has also been tentatively identified.
About this Structure
446D is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.
Reference
Structure of the oligonucleotide d(CGTATATACG) as a site-specific complex with nickel ions., Abrescia NG, Malinina L, Fernandez LG, Huynh-Dinh T, Neidle S, Subirana JA, Nucleic Acids Res. 1999 Apr 1;27(7):1593-9. PMID:10075989
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