1e4p: Difference between revisions
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|PDB= 1e4p |SIZE=350|CAPTION= <scene name='initialview01'>1e4p</scene> | |PDB= 1e4p |SIZE=350|CAPTION= <scene name='initialview01'>1e4p</scene> | ||
|SITE= | |SITE= | ||
|LIGAND= | |LIGAND= <scene name='pdbligand=A:ADENOSINE-5'-MONOPHOSPHATE'>A</scene>, <scene name='pdbligand=C:CYTIDINE-5'-MONOPHOSPHATE'>C</scene>, <scene name='pdbligand=G:GUANOSINE-5'-MONOPHOSPHATE'>G</scene>, <scene name='pdbligand=U:URIDINE-5'-MONOPHOSPHATE'>U</scene> | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY= | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1e4p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e4p OCA], [http://www.ebi.ac.uk/pdbsum/1e4p PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1e4p RCSB]</span> | |||
}} | }} | ||
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[[Category: substrate hairpin]] | [[Category: substrate hairpin]] | ||
''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 19:55:06 2008'' | ||
Revision as of 19:55, 30 March 2008
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| Ligands: | , , , | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
STRUCTURE OF THE RIBOZYME SUBSTRATE HAIRPIN OF NEUROSPORA VS RNA. A CLOSE LOOK AT THE CLEAVAGE SITE
OverviewOverview
The cleavage site of the Neurospora VS RNA ribozyme is located in a separate hairpin domain containing a hexanucleotide internal loop with an A-C mismatch and two adjacent G-A mismatches. The solution structure of the internal loop and helix la of the ribozyme substrate hairpin has been determined by nuclear magnetic resonance (NMR) spectroscopy. The 2 nt in the internal loop, flanking the cleavage site, a guanine and adenine, are involved in two sheared G.A base pairs similar to the magnesium ion-binding site of the hammerhead ribozyme. Adjacent to the tandem G.A base pairs, the adenine and cytidine, which are important for cleavage, form a noncanonical wobble A+-C base pair. The dynamic properties of the internal loop and details of the high-resolution structure support the view that the hairpin structure represents a ground state, which has to undergo a conformational change prior to cleavage. Results of chemical modification and mutagenesis data of the Neurospora VS RNA ribozyme can be explained in context with the present three-dimensional structure.
About this StructureAbout this Structure
1E4P is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.
ReferenceReference
Structure of the ribozyme substrate hairpin of Neurospora VS RNA: a close look at the cleavage site., Michiels PJ, Schouten CH, Hilbers CW, Heus HA, RNA. 2000 Dec;6(12):1821-32. PMID:11142381
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