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| Title: | | AN ALTERNATING ANTIPARALLEL OCTAPLEX IN AN RNA CRYSTAL STRUCTURE | |
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| Molecular Description: | 5'-R(Up(BGM)GpApGpGpU)-3' |
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| Structural Features: | QUADRUPLE HELIX |
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| Nucleic Acid Sequence: |
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| Primary Citation: | Pan, B.C., Xiong, Y., Shi, K., Sundaralingam, M.
An Eight-Stranded Helical Fragment in RNA Crystal Structure: Implications for Tetraplex Interaction
Structure
, 11,
pp. 825 - 831, 2003.
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| Experimental Information: | X-RAY DIFFRACTION |
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| Space Group: |
I
4
2
2
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| Cell Constants: |
| a = 35.956 | b = 35.956 | c = 38.045 | (Ångstroms) |
 = 90.00 |  = 90.00 |  = 90.00 | (degrees) |
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| Crystallization Conditions: |
| Method: | | VAPOR DIFFUSION, HANGING DROP |
| Drop: | | MPD, MgCl2, Cobalt(III)hexammine, ethidine bromide, sodium cacodylate |
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| Refinement: | The structure was refined using the CNS program.
The R value is
17.2
for 3763 reflections
in the resolution range 30.0 to
1.50 Ångstroms
with Fobs > 2.0 sigma(Fobs).
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