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| | ==Structure of the LicT Bacterial Antiterminator Protein in Complex with its RNA Target== | | ==Structure of the LicT Bacterial Antiterminator Protein in Complex with its RNA Target== |
| - | <StructureSection load='1l1c' size='340' side='right'caption='[[1l1c]], [[NMR_Ensembles_of_Models | 1 NMR models]]' scene=''> | + | <StructureSection load='1l1c' size='340' side='right'caption='[[1l1c]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1l1c]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_globigii"_migula_1900 "bacillus globigii" migula 1900]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1L1C OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1L1C FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1l1c]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1L1C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1L1C FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1auu|1auu]], [[1h99|1h99]]</div></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LicT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 "Bacillus globigii" Migula 1900])</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=1l1c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l1c OCA], [https://pdbe.org/1l1c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1l1c RCSB], [https://www.ebi.ac.uk/pdbsum/1l1c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1l1c ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1l1c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l1c OCA], [http://pdbe.org/1l1c PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1l1c RCSB], [http://www.ebi.ac.uk/pdbsum/1l1c PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1l1c ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/LICT_BACSU LICT_BACSU]] Mediates positive regulation of the glucanase operon (licST) by functioning as an antiterminator factor of transcription. Prevents termination at terminator lic-t. | + | [https://www.uniprot.org/uniprot/LICT_BACSU LICT_BACSU] Mediates positive regulation of the glucanase operon (licST) by functioning as an antiterminator factor of transcription. Prevents termination at terminator lic-t. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacillus globigii migula 1900]] | + | [[Category: Bacillus subtilis]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Aymerich, S]] | + | [[Category: Aymerich S]] |
| - | [[Category: Declerck, N]] | + | [[Category: Declerck N]] |
| - | [[Category: Kochoyan, M]] | + | [[Category: Kochoyan M]] |
| - | [[Category: Manival, X]] | + | [[Category: Manival X]] |
| - | [[Category: Yang, Y]] | + | [[Category: Yang Y]] |
| - | [[Category: Antiterminator complex]]
| + | |
| - | [[Category: Protein rna complex]]
| + | |
| - | [[Category: Rna hairpin]]
| + | |
| - | [[Category: Transcription-rna complex]]
| + | |
| Structural highlights
Function
LICT_BACSU Mediates positive regulation of the glucanase operon (licST) by functioning as an antiterminator factor of transcription. Prevents termination at terminator lic-t.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
LicT is a bacterial regulatory protein able to prevent the premature arrest of transcription. When activated, LicT binds to a 29 base RNA hairpin overlapping a terminator located in the 5' mRNA leader region of the target genes. We have determined the solution structure of the LicT RNA-binding domain (CAT) in complex with its ribonucleic antiterminator (RAT) target by NMR spectroscopy (PDB 1L1C). CAT is a beta-stranded homodimer that undergoes no important conformational changes upon complex formation. It interacts, through mostly hydrophobic and stacking interactions, with the distorted minor groove of the hairpin stem that is interrupted by two asymmetric internal loops. Although different in sequence, these loops share sufficient structural analogy to be recognized similarly by symmetry-related elements of the protein dimer, leading to a quasi- symmetric structure reminiscent of that observed with dimeric transcription regulators bound to palindromic DNA. Sequence analysis suggests that this RNA- binding mode, where the RAT strands are clamped by the CAT dimer, is conserved in homologous systems.
Solution structure of the LicT-RNA antitermination complex: CAT clamping RAT.,Yang Y, Declerck N, Manival X, Aymerich S, Kochoyan M EMBO J. 2002 Apr 15;21(8):1987-97. PMID:11953318[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Yang Y, Declerck N, Manival X, Aymerich S, Kochoyan M. Solution structure of the LicT-RNA antitermination complex: CAT clamping RAT. EMBO J. 2002 Apr 15;21(8):1987-97. PMID:11953318 doi:10.1093/emboj/21.8.1987
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