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488d

From Proteopedia

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{{STRUCTURE_488d| PDB=488d | SCENE= }}
{{STRUCTURE_488d| PDB=488d | SCENE= }}
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'''CATALYTIC RNA ENZYME-PRODUCT COMPLEX'''
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===CATALYTIC RNA ENZYME-PRODUCT COMPLEX===
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==Overview==
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We have determined the crystal structure of the enzyme-product complex of the hammerhead ribozyme by using a reinforced crystal lattice to trap the complex prior to dissociation and by employing X-ray holographic image reconstruction, a real-space electron density imaging and refinement procedure. Subsequent to catalysis, the cleavage site residue (C-17), together with its 2',3'-cyclic phosphate, adopts a conformation close to and approximately perpendicular to the Watson-Crick base-pairing faces of two highly conserved purines in the ribozyme's catalytic pocket (G-5 and A-6). We observe several interactions with functional groups on these residues that have been identified as critical for ribozyme activity by biochemical analyses but whose role has defied explanation in terms of previous structural analyses. These interactions may therefore be relevant to the hammerhead ribozyme reaction mechanism.
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(as it appears on PubMed at http://www.pubmed.gov), where 10882069 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10882069}}
==About this Structure==
==About this Structure==
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[[Category: Enzyme-product complex]]
[[Category: Enzyme-product complex]]
[[Category: Ribozyme]]
[[Category: Ribozyme]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 22:20:13 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Jul 3 13:26:51 2008''

Revision as of 10:26, 3 July 2008

Image:488d.png

Template:STRUCTURE 488d

CATALYTIC RNA ENZYME-PRODUCT COMPLEX

Template:ABSTRACT PUBMED 10882069

About this Structure

Full crystallographic information is available from OCA.

Reference

Capture and visualization of a catalytic RNA enzyme-product complex using crystal lattice trapping and X-ray holographic reconstruction., Murray JB, Szoke H, Szoke A, Scott WG, Mol Cell. 2000 Feb;5(2):279-87. PMID:10882069

Page seeded by OCA on Thu Jul 3 13:26:51 2008

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