1uvj
From Proteopedia
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==Overview== | ==Overview== | ||
| - | The RNA-dependent RNA polymerase of bacteriophage phi6 transcribes mRNA, from the three segments of the dsRNA viral genome. We have cocrystallized, RNA oligonucleotides with the polymerase, revealing the mode of binding of, RNA templates. This binding is somewhat different from that previously, seen for DNA oligomers, leading to additional RNA-protein hydrogen bonds, consistent with a preference for RNA. Activation of the RNA/polymerase, complex by the addition of substrate and Mg2+ initiates a single round of, reaction within the crystal to form a dead-end complex that partially, collapses within the enzyme active site. By replacing Mg2+ with Ca2+, we, have been able to capture the inhibited complex which shows distortion, that explains the structural basis for the inhibition of such . | + | The RNA-dependent RNA polymerase of bacteriophage phi6 transcribes mRNA, from the three segments of the dsRNA viral genome. We have cocrystallized, RNA oligonucleotides with the polymerase, revealing the mode of binding of, RNA templates. This binding is somewhat different from that previously, seen for DNA oligomers, leading to additional RNA-protein hydrogen bonds, consistent with a preference for RNA. Activation of the RNA/polymerase, complex by the addition of substrate and Mg2+ initiates a single round of, reaction within the crystal to form a dead-end complex that partially, collapses within the enzyme active site. By replacing Mg2+ with Ca2+, we, have been able to capture the inhibited complex which shows distortion, that explains the structural basis for the inhibition of such polymerases, by Ca2+. |
==About this Structure== | ==About this Structure== | ||
| - | 1UVJ is a | + | 1UVJ is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/ ] with MN as [http://en.wikipedia.org/wiki/ligand ligand]. Structure known Active Sites: 1 and CA1. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1UVJ OCA]. |
==Reference== | ==Reference== | ||
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[[Category: rna-dependent rna polymerase]] | [[Category: rna-dependent rna polymerase]] | ||
| - | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 5 14:30:26 2007'' |
Revision as of 12:25, 5 November 2007
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THE STRUCTURAL BASIS FOR RNA SPECIFICITY AND CA2 INHIBITION OF AN RNA-DEPENDENT RNA POLYMERASE PHI6P2 WITH 7NT RNA
Overview
The RNA-dependent RNA polymerase of bacteriophage phi6 transcribes mRNA, from the three segments of the dsRNA viral genome. We have cocrystallized, RNA oligonucleotides with the polymerase, revealing the mode of binding of, RNA templates. This binding is somewhat different from that previously, seen for DNA oligomers, leading to additional RNA-protein hydrogen bonds, consistent with a preference for RNA. Activation of the RNA/polymerase, complex by the addition of substrate and Mg2+ initiates a single round of, reaction within the crystal to form a dead-end complex that partially, collapses within the enzyme active site. By replacing Mg2+ with Ca2+, we, have been able to capture the inhibited complex which shows distortion, that explains the structural basis for the inhibition of such polymerases, by Ca2+.
About this Structure
1UVJ is a Protein complex structure of sequences from [1] with MN as ligand. Structure known Active Sites: 1 and CA1. Full crystallographic information is available from OCA.
Reference
The structural basis for RNA specificity and Ca2+ inhibition of an RNA-dependent RNA polymerase., Salgado PS, Makeyev EV, Butcher SJ, Bamford DH, Stuart DI, Grimes JM, Structure. 2004 Feb;12(2):307-16. PMID:14962391
Page seeded by OCA on Mon Nov 5 14:30:26 2007
