|
|
| Line 1: |
Line 1: |
| | | | |
| | ==Structure of a vertebrate RNA binding domain of telomerase (TRBD)== | | ==Structure of a vertebrate RNA binding domain of telomerase (TRBD)== |
| - | <StructureSection load='4lmo' size='340' side='right' caption='[[4lmo]], [[Resolution|resolution]] 2.37Å' scene=''> | + | <StructureSection load='4lmo' size='340' side='right'caption='[[4lmo]], [[Resolution|resolution]] 2.37Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4lmo]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Fugu_rubripes Fugu rubripes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4LMO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4LMO FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4lmo]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Takifugu_rubripes Takifugu rubripes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4LMO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4LMO FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2r4g|2r4g]], [[3du5|3du5]], [[3du6|3du6]]</td></tr> | + | </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=4lmo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4lmo OCA], [https://pdbe.org/4lmo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4lmo RCSB], [https://www.ebi.ac.uk/pdbsum/4lmo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4lmo ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TERT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=31033 Fugu rubripes])</td></tr>
| + | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4lmo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4lmo OCA], [http://pdbe.org/4lmo PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4lmo RCSB], [http://www.ebi.ac.uk/pdbsum/4lmo PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4lmo ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/TERT_TAKRU TERT_TAKRU] Telomerase is a ribonucleoprotein enzyme essential for the replication of chromosome termini in most eukaryotes. It elongates telomeres. It is a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.<ref>PMID:18039659</ref> <ref>PMID:24055314</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
| Line 19: |
Line 19: |
| | | | |
| | ==See Also== | | ==See Also== |
| - | *[[Reverse transcriptase|Reverse transcriptase]] | + | *[[Telomerase 3D structures|Telomerase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Fugu rubripes]] | + | [[Category: Large Structures]] |
| - | [[Category: Harkisheimer, M]] | + | [[Category: Takifugu rubripes]] |
| - | [[Category: Mason, M]] | + | [[Category: Harkisheimer M]] |
| - | [[Category: Shuvaeva, E]] | + | [[Category: Mason M]] |
| - | [[Category: Skordalakes, E]] | + | [[Category: Shuvaeva E]] |
| - | [[Category: Rna binding domain of the reverse transcriptase telomerase]]
| + | [[Category: Skordalakes E]] |
| - | [[Category: Rna binding protein]]
| + | |
| Structural highlights
Function
TERT_TAKRU Telomerase is a ribonucleoprotein enzyme essential for the replication of chromosome termini in most eukaryotes. It elongates telomeres. It is a reverse transcriptase that adds simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme.[1] [2]
Publication Abstract from PubMed
Telomerase is a ribonucleoprotein reverse transcriptase that replicates the ends of chromosomes, thus maintaining genome stability. Telomerase ribonucleoprotein assembly is primarily mediated by the RNA binding domain (TRBD) of the enzyme. Here we present the high-resolution TRBD structure of the vertebrate, Takifugu rubripes (trTRBD). The structure shows that with the exception of the N-terminal linker, the trTRBD is conserved with the Tribolium castaneum and Tetrahymena thermophila TRBDs, suggesting evolutionary conservation across species. The structure provides a view of the structural organization of the vertebrate-specific VSR motif that binds the activation domain (CR4/5) of the RNA component of telomerase. It also reveals a motif (TFLY) that forms part of the T-CP pocket implicated in template boundary element (TBE) binding. Mutant proteins of conserved residues that consist of part of the T and TFLY motifs disrupt trTRBD-TBE binding and telomerase activity and processivity, supporting an essential role of these motifs in telomerase RNP assembly and function.
A Motif in the Vertebrate Telomerase N-Terminal Linker of TERT Contributes to RNA Binding and Telomerase Activity and Processivity.,Harkisheimer M, Mason M, Shuvaeva E, Skordalakes E Structure. 2013 Sep 17. pii: S0969-2126(13)00305-5. doi:, 10.1016/j.str.2013.08.013. PMID:24055314[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Xie M, Mosig A, Qi X, Li Y, Stadler PF, Chen JJ. Structure and function of the smallest vertebrate telomerase RNA from teleost fish. J Biol Chem. 2008 Jan 25;283(4):2049-59. doi: 10.1074/jbc.M708032200. Epub 2007 , Nov 26. PMID:18039659 doi:http://dx.doi.org/10.1074/jbc.M708032200
- ↑ Harkisheimer M, Mason M, Shuvaeva E, Skordalakes E. A Motif in the Vertebrate Telomerase N-Terminal Linker of TERT Contributes to RNA Binding and Telomerase Activity and Processivity. Structure. 2013 Sep 17. pii: S0969-2126(13)00305-5. doi:, 10.1016/j.str.2013.08.013. PMID:24055314 doi:http://dx.doi.org/10.1016/j.str.2013.08.013
- ↑ Harkisheimer M, Mason M, Shuvaeva E, Skordalakes E. A Motif in the Vertebrate Telomerase N-Terminal Linker of TERT Contributes to RNA Binding and Telomerase Activity and Processivity. Structure. 2013 Sep 17. pii: S0969-2126(13)00305-5. doi:, 10.1016/j.str.2013.08.013. PMID:24055314 doi:http://dx.doi.org/10.1016/j.str.2013.08.013
|
