2lcq: Difference between revisions
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<StructureSection load='2lcq' size='340' side='right' caption='[[2lcq]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | <StructureSection load='2lcq' size='340' side='right' caption='[[2lcq]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
[[2lcq]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermomicrobium_roseum Thermomicrobium roseum]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LCQ OCA]. <br> | <table><tr><td colspan='2'>[[2lcq]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermomicrobium_roseum Thermomicrobium roseum]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LCQ OCA]. <br> | ||
<b>[[Ligand|Ligands:]]</b> <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene><br> | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene><br> | ||
<b>Activity:</b> <span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucokinase Glucokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.2 2.7.1.2] </span>< | <tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">vapC6, PH0709 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=500 Thermomicrobium roseum])</td></tr> | ||
<b>Resources:</b> <span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2lcq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lcq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2lcq RCSB], [http://www.ebi.ac.uk/pdbsum/2lcq PDBsum]</span>< | <tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucokinase Glucokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.2 2.7.1.2] </span></td></tr> | ||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2lcq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lcq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2lcq RCSB], [http://www.ebi.ac.uk/pdbsum/2lcq PDBsum]</span></td></tr> | |||
<table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
Eukaryotic ribosome biogenesis requires the concerted action of numerous ribosome assembly factors, for most of which structural and functional information is currently lacking. Nob1, which can be identified in eukaryotes and archaea, is required for the final maturation of the small subunit ribosomal RNA in yeast by catalyzing cleavage at site D after export of the preribosomal subunit into the cytoplasm. Here, we show that this also holds true for Nob1 from the archaeon Pyrococcus horikoshii, which efficiently cleaves RNA-substrates containing the D-site of the preribosomal RNA in a manganese-dependent manner. The structure of PhNob1 solved by nuclear magnetic resonance spectroscopy revealed a PIN domain common with many nucleases and a zinc ribbon domain, which are structurally connected by a flexible linker. We show that amino acid residues required for substrate binding reside in the PIN domain whereas the zinc ribbon domain alone is sufficient to bind helix 40 of the small subunit rRNA. This suggests that the zinc ribbon domain acts as an anchor point for the protein on the nascent subunit positioning it in the proximity of the cleavage site. | Eukaryotic ribosome biogenesis requires the concerted action of numerous ribosome assembly factors, for most of which structural and functional information is currently lacking. Nob1, which can be identified in eukaryotes and archaea, is required for the final maturation of the small subunit ribosomal RNA in yeast by catalyzing cleavage at site D after export of the preribosomal subunit into the cytoplasm. Here, we show that this also holds true for Nob1 from the archaeon Pyrococcus horikoshii, which efficiently cleaves RNA-substrates containing the D-site of the preribosomal RNA in a manganese-dependent manner. The structure of PhNob1 solved by nuclear magnetic resonance spectroscopy revealed a PIN domain common with many nucleases and a zinc ribbon domain, which are structurally connected by a flexible linker. We show that amino acid residues required for substrate binding reside in the PIN domain whereas the zinc ribbon domain alone is sufficient to bind helix 40 of the small subunit rRNA. This suggests that the zinc ribbon domain acts as an anchor point for the protein on the nascent subunit positioning it in the proximity of the cleavage site. | ||
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
== References == | == References == | ||
<references/> | <references/> | ||