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1tob

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[[Image:1tob.jpg|left|200px]]
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{{Seed}}
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{{STRUCTURE_1tob| PDB=1tob | SCENE= }}
{{STRUCTURE_1tob| PDB=1tob | SCENE= }}
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'''SACCHARIDE-RNA RECOGNITION IN AN AMINOGLYCOSIDE ANTIBIOTIC-RNA APTAMER COMPLEX, NMR, 7 STRUCTURES'''
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===SACCHARIDE-RNA RECOGNITION IN AN AMINOGLYCOSIDE ANTIBIOTIC-RNA APTAMER COMPLEX, NMR, 7 STRUCTURES===
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==Overview==
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BACKGROUND: Aminoglycoside antibiotics are known to target ribosomal, retroviral and catalytic RNAs with high affinity and specificity. Recently, in vitro selection experiments have identified RNA aptamers that bind to aminoglycoside antibiotics with nanomolar affinity and stringent specificity, allowing discrimination between closely related family members. There has, to date, been limited structural information on the molecular basis of such saccharide-RNA recognition. RESULTS: We describe a solution-structure determination of the tobramycin-RNA aptamer complex, obtained using NMR and molecular dynamics. The structure gives insight into the molecular features associated with saccharide-RNA recognition. Tobramycin adopts a defined alignment and binds to the RNA major groove centered about a stem-loop junction site. A portion of the bound tobramycin is encapsulated between the floor of the major groove and a looped-out cytosine residue that forms a flap over the binding site in the complex. CONCLUSIONS: The emergence of antibiotic-resistant pathogens and their impact on human health continues to be a major concern in the medical community. Rational modification of existing antibiotics aimed at improving their efficacy requires a molecular view of their receptor-binding sites. We have provided such a molecular view for a member of the aminoglycoside antibiotic family that targets RNA.
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(as it appears on PubMed at http://www.pubmed.gov), where 9070426 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9070426}}
==About this Structure==
==About this Structure==
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Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TOB OCA].
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Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TOB OCA].
==Reference==
==Reference==
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[[Category: Suri, A K.]]
[[Category: Suri, A K.]]
[[Category: Ribonucleic acid]]
[[Category: Ribonucleic acid]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 10:10:59 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 09:32:57 2008''

Revision as of 06:33, 29 July 2008

Image:1tob.png

Template:STRUCTURE 1tob

SACCHARIDE-RNA RECOGNITION IN AN AMINOGLYCOSIDE ANTIBIOTIC-RNA APTAMER COMPLEX, NMR, 7 STRUCTURES

Template:ABSTRACT PUBMED 9070426

About this Structure

Full experimental information is available from OCA.

Reference

Saccharide-RNA recognition in an aminoglycoside antibiotic-RNA aptamer complex., Jiang L, Suri AK, Fiala R, Patel DJ, Chem Biol. 1997 Jan;4(1):35-50. PMID:9070426

Page seeded by OCA on Tue Jul 29 09:32:57 2008

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