1p8k

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[[Image:1p8k.gif|left|200px]]
[[Image:1p8k.gif|left|200px]]
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{{Structure
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<!--
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|PDB= 1p8k |SIZE=350|CAPTION= <scene name='initialview01'>1p8k</scene>, resolution 2.6&Aring;
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The line below this paragraph, containing "STRUCTURE_1p8k", creates the "Structure Box" on the page.
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|SITE=
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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|LIGAND= <scene name='pdbligand=DA:2&#39;-DEOXYADENOSINE-5&#39;-MONOPHOSPHATE'>DA</scene>, <scene name='pdbligand=DC:2&#39;-DEOXYCYTIDINE-5&#39;-MONOPHOSPHATE'>DC</scene>, <scene name='pdbligand=DG:2&#39;-DEOXYGUANOSINE-5&#39;-MONOPHOSPHATE'>DG</scene>, <scene name='pdbligand=DT:THYMIDINE-5&#39;-MONOPHOSPHATE'>DT</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY=
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or leave the SCENE parameter empty for the default display.
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|GENE= Aspergillus nidulans ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=162425 Emericella nidulans])
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-->
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|DOMAIN=
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{{STRUCTURE_1p8k| PDB=1p8k | SCENE= }}
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|RELATEDENTRY=
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1p8k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1p8k OCA], [http://www.ebi.ac.uk/pdbsum/1p8k PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1p8k RCSB]</span>
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'''The structure and DNA recognition of a bifunctional homing endonuclease and group I intron splicing factor'''
'''The structure and DNA recognition of a bifunctional homing endonuclease and group I intron splicing factor'''
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[[Category: Bolduc, J M.]]
[[Category: Bolduc, J M.]]
[[Category: Stoddard, B L.]]
[[Category: Stoddard, B L.]]
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[[Category: hydrolase/dna]]
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[[Category: Hydrolase/dna]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 04:49:13 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:56:24 2008''
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Revision as of 01:49, 3 May 2008

Image:1p8k.gif

Template:STRUCTURE 1p8k

The structure and DNA recognition of a bifunctional homing endonuclease and group I intron splicing factor


Overview

We determined the crystal structure of a bifunctional group I intron splicing factor and homing endonuclease, termed the I-AniI maturase, in complex with its DNA target at 2.6 A resolution. The structure demonstrates the remarkable structural conservation of the beta-sheet DNA-binding motif between highly divergent enzyme subfamilies. DNA recognition by I-AniI was further studied using nucleoside deletion and DMS modification interference analyses. Correlation of these results with the crystal structure provides information on the relative importance of individual nucleotide contacts for DNA recognition. Alignment and modeling of two homologous maturases reveals conserved basic surface residues, distant from the DNA-binding surface, that might be involved in RNA binding. A point mutation that introduces a single negative charge in this region uncouples the maturase and endonuclease functions of the protein, inhibiting RNA binding and splicing while maintaining DNA binding and cleavage.

About this Structure

1P8K is a Single protein structure of sequence from Emericella nidulans. Full crystallographic information is available from OCA.

Reference

Structural and biochemical analyses of DNA and RNA binding by a bifunctional homing endonuclease and group I intron splicing factor., Bolduc JM, Spiegel PC, Chatterjee P, Brady KL, Downing ME, Caprara MG, Waring RB, Stoddard BL, Genes Dev. 2003 Dec 1;17(23):2875-88. Epub 2003 Nov 21. PMID:14633971 Page seeded by OCA on Sat May 3 04:49:13 2008

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OCA

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