2nz4

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[[Image:2nz4.gif|left|200px]]
[[Image:2nz4.gif|left|200px]]
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{{Structure
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|PDB= 2nz4 |SIZE=350|CAPTION= <scene name='initialview01'>2nz4</scene>, resolution 2.498&Aring;
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The line below this paragraph, containing "STRUCTURE_2nz4", creates the "Structure Box" on the page.
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|SITE=
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|LIGAND= <scene name='pdbligand=A:ADENOSINE-5&#39;-MONOPHOSPHATE'>A</scene>, <scene name='pdbligand=A2M:2&#39;-O-METHYL-ADENOSINE-5&#39;-MONOPHOSPHATE'>A2M</scene>, <scene name='pdbligand=C:CYTIDINE-5&#39;-MONOPHOSPHATE'>C</scene>, <scene name='pdbligand=G:GUANOSINE-5&#39;-MONOPHOSPHATE'>G</scene>, <scene name='pdbligand=GLP:GLUCOSAMINE+6-PHOSPHATE'>GLP</scene>, <scene name='pdbligand=GTP:GUANOSINE-5&#39;-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=U:URIDINE-5&#39;-MONOPHOSPHATE'>U</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|GENE= SNRPA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])
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|DOMAIN=
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{{STRUCTURE_2nz4| PDB=2nz4 | SCENE= }}
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2nz4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2nz4 OCA], [http://www.ebi.ac.uk/pdbsum/2nz4 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2nz4 RCSB]</span>
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'''Structural investigation of the GlmS ribozyme bound to its catalytic cofactor'''
'''Structural investigation of the GlmS ribozyme bound to its catalytic cofactor'''
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[[Category: Single protein]]
[[Category: Single protein]]
[[Category: Cochrane, J C.]]
[[Category: Cochrane, J C.]]
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[[Category: structural protein/rna]]
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[[Category: Structural protein/rna]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 10:06:16 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 04:10:28 2008''
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Revision as of 07:06, 4 May 2008

Image:2nz4.gif

Template:STRUCTURE 2nz4

Structural investigation of the GlmS ribozyme bound to its catalytic cofactor


Overview

The GlmS riboswitch is located in the 5'-untranslated region of the gene encoding glucosamine-6-phosphate (GlcN6P) synthetase. The GlmS riboswitch is a ribozyme with activity triggered by binding of the metabolite GlcN6P. Presented here is the structure of the GlmS ribozyme (2.5 A resolution) with GlcN6P bound in the active site. The GlmS ribozyme adopts a compact double pseudoknot tertiary structure, with two closely packed helical stacks. Recognition of GlcN6P is achieved through coordination of the phosphate moiety by two hydrated magnesium ions as well as specific nucleobase contacts to the GlcN6P sugar ring. Comparison of this activator bound and the previously published apoenzyme complex supports a model in which GlcN6P does not induce a conformational change in the RNA, as is typical of other riboswitches, but instead functions as a catalytic cofactor for the reaction. This demonstrates that RNA, like protein enzymes, can employ the chemical diversity of small molecules to promote catalytic activity.

About this Structure

2NZ4 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structural investigation of the GlmS ribozyme bound to Its catalytic cofactor., Cochrane JC, Lipchock SV, Strobel SA, Chem Biol. 2007 Jan;14(1):97-105. Epub 2006 Dec 28. PMID:17196404 Page seeded by OCA on Sun May 4 10:06:16 2008

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