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1sxp

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==BGT in complex with a 13mer DNA containing a central A:G mismatch==
==BGT in complex with a 13mer DNA containing a central A:G mismatch==
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<StructureSection load='1sxp' size='340' side='right' caption='[[1sxp]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
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<StructureSection load='1sxp' size='340' side='right'caption='[[1sxp]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[1sxp]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Bpt4 Bpt4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SXP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1SXP FirstGlance]. <br>
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<table><tr><td colspan='2'>[[1sxp]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_virus_T4 Escherichia virus T4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SXP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1SXP FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1m5r|1m5r]], [[1ixy|1ixy]], [[1sxq|1sxq]]</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BGT, BETA-GT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10665 BPT4])</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1sxp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1sxp OCA], [https://pdbe.org/1sxp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1sxp RCSB], [https://www.ebi.ac.uk/pdbsum/1sxp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1sxp ProSAT]</span></td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA_beta-glucosyltransferase DNA beta-glucosyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.1.27 2.4.1.27] </span></td></tr>
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<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=1sxp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1sxp OCA], [http://pdbe.org/1sxp PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1sxp RCSB], [http://www.ebi.ac.uk/pdbsum/1sxp PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1sxp ProSAT]</span></td></tr>
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</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/GSTB_BPT4 GSTB_BPT4]] Catalyzes the transfer of glucose (Glc) from uridine diphosphoglucose (UDP-Glc) to 5-hydroxymethylcytosine (5-HMC) in double-stranded DNA. Is involved in a DNA modification process to protect the phage genome against its own nucleases and the host restriction endonuclease system.
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[https://www.uniprot.org/uniprot/GSTB_BPT4 GSTB_BPT4] Catalyzes the transfer of glucose (Glc) from uridine diphosphoglucose (UDP-Glc) to 5-hydroxymethylcytosine (5-HMC) in double-stranded DNA. Is involved in a DNA modification process to protect the phage genome against its own nucleases and the host restriction endonuclease system.
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Beta-glucosyltransferase (BGT) is a DNA-modifying enzyme and a glycosyltransferase. This inverting enzyme transfers glucose from UDP-glucose to the 5-hydroxymethyl cytosine bases of T4 phage DNA. From previous structural analyses we showed that Asp-100 and Asn-70 were, respectively, the catalytic base and the key residue for specific DNA recognition (Lariviere, L., Gueguen-Chaignon, V., and Morera, S. (2003) J. Mol. Biol. 330, 1077-1086). Here, we supply biochemical evidence supporting their essential roles in catalysis. We have also shown previously that BGT uses a base-flipping mechanism to access 5-hydroxymethyl cytosine (Lariviere, L., and Morera, S. (2002) J. Mol. Biol. 324, 483-490). Whether it is an active or a passive process remains unclear, as is the case for all DNA cleaving and modifying enzymes. Here, we report two crystal structures: (i) BGT in complex with a 13-mer DNA containing an A:G mismatch and (ii) BGT in a ternary complex with UDP and an oligonucleotide containing a single central G:C base pair. The binary structure reveals a specific complex with the flipped-out, mismatched adenine exposed to the active site. Unexpectedly, the other structure shows the non-productive binding of an intermediate flipped-out base. Our structural analysis provides clear evidence for a passive process.
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Structural evidence of a passive base-flipping mechanism for beta-glucosyltransferase.,Lariviere L, Morera S J Biol Chem. 2004 Aug 13;279(33):34715-20. Epub 2004 Jun 3. PMID:15178685<ref>PMID:15178685</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1sxp" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Bpt4]]
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[[Category: Escherichia virus T4]]
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[[Category: DNA beta-glucosyltransferase]]
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[[Category: Large Structures]]
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[[Category: Lariviere, L]]
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[[Category: Lariviere L]]
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[[Category: Morera, S]]
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[[Category: Morera S]]
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[[Category: Flipped-out base]]
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[[Category: Transferase-dna complex]]
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Current revision

BGT in complex with a 13mer DNA containing a central A:G mismatch

PDB ID 1sxp

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