1koc
From Proteopedia
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|PDB= 1koc |SIZE=350|CAPTION= <scene name='initialview01'>1koc</scene> | |PDB= 1koc |SIZE=350|CAPTION= <scene name='initialview01'>1koc</scene> | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=ARG:ARGININE'>ARG</scene> | + | |LIGAND= <scene name='pdbligand=A:ADENOSINE-5'-MONOPHOSPHATE'>A</scene>, <scene name='pdbligand=ARG:ARGININE'>ARG</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=[[1kod|1KOD]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1koc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1koc OCA], [http://www.ebi.ac.uk/pdbsum/1koc PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1koc RCSB]</span> | ||
}} | }} | ||
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[[Category: Westhof, E.]] | [[Category: Westhof, E.]] | ||
[[Category: Yang, Y S.]] | [[Category: Yang, Y S.]] | ||
| - | [[Category: ARG]] | ||
[[Category: complex (rna aptamer/peptide)]] | [[Category: complex (rna aptamer/peptide)]] | ||
[[Category: in vitro selected rna]] | [[Category: in vitro selected rna]] | ||
[[Category: rna aptamer]] | [[Category: rna aptamer]] | ||
| - | ''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 21:51:21 2008'' |
Revision as of 18:51, 30 March 2008
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| Ligands: | , , , , | ||||||
| Related: | 1KOD
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
RNA APTAMER COMPLEXED WITH ARGININE, NMR
Overview
In a previous study, an RNA aptamer for the specific recognition of arginine was evolved from a parent sequence that bound citrulline specifically. The two RNAs differ at only 3 positions out of 44. The solution structures of the two aptamers complexed to their cognate amino acids have now been determined by two-dimensional nuclear magnetic resonance spectroscopy. Both aptamers contain two asymmetrical internal loops that are not well ordered in the free RNA but that fold into a compact structure upon ligand binding. Those nucleotides common to both RNAs include a conserved cluster of purine residues, three of which form an uneven plane containing a G:G pair, and two other residues nearly perpendicular to that surface. Two of the three variant nucleotides are stacked on the cluster of purines and form a triple contact to the amino acid side chain, whereas the edge of the third variant nucleotide is capping the binding pocket.
About this Structure
1KOC is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.
Reference
Structural basis of ligand discrimination by two related RNA aptamers resolved by NMR spectroscopy., Yang Y, Kochoyan M, Burgstaller P, Westhof E, Famulok M, Science. 1996 May 31;272(5266):1343-7. PMID:8650546
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