1l3z: Difference between revisions
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[[Image:1l3z.gif|left|200px]] | [[Image:1l3z.gif|left|200px]] | ||
'''Crystal Structure Analysis of an RNA Heptamer''' | {{Structure | ||
|PDB= 1l3z |SIZE=350|CAPTION= <scene name='initialview01'>1l3z</scene>, resolution 2.01Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=NA:SODIUM ION'>NA</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''Crystal Structure Analysis of an RNA Heptamer''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1L3Z is a [ | 1L3Z 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=1L3Z OCA]. | ||
==Reference== | ==Reference== | ||
The crystal structure of an alternating RNA heptamer r(GUAUACA) forming a six base-paired duplex with 3'-end adenine overhangs., Shi K, Pan B, Sundaralingam M, Nucleic Acids Res. 2003 Mar 1;31(5):1392-7. PMID:[http:// | The crystal structure of an alternating RNA heptamer r(GUAUACA) forming a six base-paired duplex with 3'-end adenine overhangs., Shi K, Pan B, Sundaralingam M, Nucleic Acids Res. 2003 Mar 1;31(5):1392-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12595546 12595546] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Pan, B.]] | [[Category: Pan, B.]] | ||
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[[Category: rna]] | [[Category: rna]] | ||
''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 12:26:03 2008'' | ||
Revision as of 10:26, 20 March 2008
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| 1l3z, resolution 2.01Å | |||||||||||||
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| Ligands: | NA | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Crystal Structure Analysis of an RNA Heptamer
Overview
The crystal structure of an alternating RNA heptamer r(GUAUACA) has been determined to 2.0 A resolution and refined to an R(work) of 17.1% and R(free) of 18.5% using 2797 reflections. The heptamer crystallized in the space group C222 with a unit cell of a = 25.74, b = 106.58, c = 30.26 A and two independent strands in the asymmetric unit. Each heptamer forms a duplex with its symmetry-related strand and each duplex contains six Watson-Crick base pairs and 3'-end adenosine overhangs. Therefore, two kinds of duplex (duplex 1 and duplex 2) are formed. Duplexes 1 stack on each other forming a pseudo-continuous column, which is typical of the RNA packing mode, while duplex 2 is typical of A-DNA packing with its termini in abutting interactions. Overhang adenine residues stack within the duplexes with C3'-endo sugar pucker and C2'-endo sugar pucker in duplexes 1 and 2, respectively. A Na+ ion in the crystal lattice is water bridged to two N1 atoms of symmetry-related A7 bases.
About this Structure
1L3Z is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.
Reference
The crystal structure of an alternating RNA heptamer r(GUAUACA) forming a six base-paired duplex with 3'-end adenine overhangs., Shi K, Pan B, Sundaralingam M, Nucleic Acids Res. 2003 Mar 1;31(5):1392-7. PMID:12595546
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