2hoo: Difference between revisions
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|PDB= 2hoo |SIZE=350|CAPTION= <scene name='initialview01'>2hoo</scene>, resolution 3.00Å | |PDB= 2hoo |SIZE=350|CAPTION= <scene name='initialview01'>2hoo</scene>, resolution 3.00Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene> | |LIGAND= <scene name='pdbligand=A:ADENOSINE-5'-MONOPHOSPHATE'>A</scene>, <scene name='pdbligand=BFT:S-BENZOYLTHIAMINE+O-MONOPHOSPHATE'>BFT</scene>, <scene name='pdbligand=C:CYTIDINE-5'-MONOPHOSPHATE'>C</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</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=[[2hoj|2HOJ]], [[2hok|2HOK]], [[2hol|2HOL]], [[2hom|2HOM]], [[2hop|2HOP]] | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2hoo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hoo OCA], [http://www.ebi.ac.uk/pdbsum/2hoo PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2hoo RCSB]</span> | |||
}} | }} | ||
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[[Category: Amare, A R.Ferre-D.]] | [[Category: Amare, A R.Ferre-D.]] | ||
[[Category: Edwards, T E.]] | [[Category: Edwards, T E.]] | ||
[[Category: | [[Category: benfotiamine]] | ||
[[Category: | [[Category: riboswitch]] | ||
[[Category: rna | [[Category: rna]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:33:14 2008'' | ||
Revision as of 03:33, 31 March 2008
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| , resolution 3.00Å | |||||||
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| Ligands: | , , , , , | ||||||
| Related: | 2HOJ, 2HOK, 2HOL, 2HOM, 2HOP
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of an E. coli thi-box riboswitch bound to benfotiamine
OverviewOverview
Riboswitches are noncoding mRNA elements that bind small-molecule metabolites with high affinity and specificity, and they regulate the expression of associated genes. The thi-box riboswitch can exhibit a 1000-fold higher affinity for thiamine pyrophosphate over closely related noncognate compounds such as thiamine monophosphate. To understand the chemical basis of thi-box pyrophosphate specificity, we have determined crystal structures of an E. coli thi-box bound to thiamine pyrophosphate, thiamine monophosphate, and the structural analogs benfotiamine and pyrithiamine. When bound to monophosphorylated compounds, the RNA elements that recognize the thiamine and phosphate moieties of the ligand move closer together. This allows the riboswitch to recognize the monophosphate in a manner similar to how it recognizes the beta-phosphate of thiamine pyrophosphate. In the pyrithiamine complex, the pyrophosphate binding site is largely unstructured. These results show how the riboswitch can bind to various metabolites, and why the thi-box preferentially binds thiamine pyrophosphate.
About this StructureAbout this Structure
2HOO is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structures of the thi-box riboswitch bound to thiamine pyrophosphate analogs reveal adaptive RNA-small molecule recognition., Edwards TE, Ferre-D'Amare AR, Structure. 2006 Sep;14(9):1459-68. PMID:16962976
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