3hhn
From Proteopedia
(Difference between revisions)
| Line 3: | Line 3: | ||
<StructureSection load='3hhn' size='340' side='right'caption='[[3hhn]], [[Resolution|resolution]] 2.99Å' scene=''> | <StructureSection load='3hhn' size='340' side='right'caption='[[3hhn]], [[Resolution|resolution]] 2.99Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[3hhn]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/ | + | <table><tr><td colspan='2'>[[3hhn]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3HHN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3HHN FirstGlance]. <br> |
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.987Å</td></tr> |
| - | <tr id=' | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A23:ADENOSINE-5-PHOSPHATE-2,3-CYCLIC+PHOSPHATE'>A23</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | + | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3hhn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hhn OCA], [https://pdbe.org/3hhn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3hhn RCSB], [https://www.ebi.ac.uk/pdbsum/3hhn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3hhn ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3hhn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hhn OCA], [https://pdbe.org/3hhn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3hhn RCSB], [https://www.ebi.ac.uk/pdbsum/3hhn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3hhn ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
| - | + | [https://www.uniprot.org/uniprot/SNRPA_HUMAN SNRPA_HUMAN] Binds stem loop II of U1 snRNA. It is the first snRNP to interact with pre-mRNA. This interaction is required for the subsequent binding of U2 snRNP and the U4/U6/U5 tri-snRNP. In a snRNP-free form (SF-A) may be involved in coupled pre-mRNA splicing and polyadenylation process. Binds preferentially to the 5'-UGCAC-3' motif in vitro.<ref>PMID:9848648</ref> | |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
| Line 21: | Line 20: | ||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3hhn ConSurf]. | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3hhn ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | Primordial organisms of the putative RNA world would have required polymerase ribozymes able to replicate RNA. Known ribozymes with polymerase activity best approximating that needed for RNA replication contain at their catalytic core the class I RNA ligase, an artificial ribozyme with a catalytic rate among the fastest of known ribozymes. Here we present the 3.0 angstrom crystal structure of this ligase. The architecture resembles a tripod, its three legs converging near the ligation junction. Interacting with this tripod scaffold through a series of 10 minor-groove interactions (including two A-minor triads) is the unpaired segment that contributes to and organizes the active site. A cytosine nucleobase and two backbone phosphates abut the ligation junction; their location suggests a model for catalysis resembling that of proteinaceous polymerases. | ||
| - | |||
| - | Crystal structure of the catalytic core of an RNA-polymerase ribozyme.,Shechner DM, Grant RA, Bagby SC, Koldobskaya Y, Piccirilli JA, Bartel DP Science. 2009 Nov 27;326(5957):1271-5. PMID:19965478<ref>PMID:19965478</ref> | ||
| - | |||
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 3hhn" style="background-color:#fffaf0;"></div> | ||
==See Also== | ==See Also== | ||
*[[Nucleoprotein 3D structures|Nucleoprotein 3D structures]] | *[[Nucleoprotein 3D structures|Nucleoprotein 3D structures]] | ||
| - | *[[Ribozyme|Ribozyme]] | + | *[[Ribozyme 3D structures|Ribozyme 3D structures]] |
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Homo sapiens]] |
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: Bagby | + | [[Category: Bagby SC]] |
| - | [[Category: Bartel | + | [[Category: Bartel DP]] |
| - | [[Category: Grant | + | [[Category: Grant RA]] |
| - | [[Category: Shechner | + | [[Category: Shechner DM]] |
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
Current revision
Crystal structure of class I ligase ribozyme self-ligation product, in complex with U1A RBD
| |||||||||||
