6tnh: Difference between revisions
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==Deoxyguanylosuccinate synthase (DgsS) quaternary structure with AMPPcP, dGMP, Asp, Magnesium at 2.21 Angstrom resolution== | ==Deoxyguanylosuccinate synthase (DgsS) quaternary structure with AMPPcP, dGMP, Asp, Magnesium at 2.21 Angstrom resolution== | ||
<StructureSection load='6tnh' size='340' side='right'caption='[[6tnh]]' scene=''> | <StructureSection load='6tnh' size='340' side='right'caption='[[6tnh]], [[Resolution|resolution]] 2.21Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TNH OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[6tnh]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_phage_phivc8 Vibrio phage phivc8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TNH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6TNH FirstGlance]. <br> | ||
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACP:PHOSPHOMETHYLPHOSPHONIC+ACID+ADENYLATE+ESTER'>ACP</scene>, <scene name='pdbligand=ASP:ASPARTIC+ACID'>ASP</scene>, <scene name='pdbligand=DGP:2-DEOXYGUANOSINE-5-MONOPHOSPHATE'>DGP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">phiVC8_p27 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1076759 Vibrio phage phiVC8])</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=6tnh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tnh OCA], [https://pdbe.org/6tnh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6tnh RCSB], [https://www.ebi.ac.uk/pdbsum/6tnh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6tnh ProSAT]</span></td></tr> | |||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Cells have two purine pathways that synthesize adenine and guanine ribonucleotides from phosphoribose via inosylate. A chemical hybrid between adenine and guanine, 2-aminoadenine (Z), replaces adenine in the DNA of the cyanobacterial virus S-2L. We show that S-2L and Vibrio phage PhiVC8 encode a third purine pathway catalyzed by PurZ, a distant paralog of succinoadenylate synthase (PurA), the enzyme condensing aspartate and inosylate in the adenine pathway. PurZ condenses aspartate with deoxyguanylate into dSMP (N6-succino-2-amino-2'-deoxyadenylate), which undergoes defumarylation and phosphorylation to give dZTP (2-amino-2'-deoxyadenosine-5'-triphosphate), a substrate for the phage DNA polymerase. Crystallography and phylogenetics analyses indicate a close relationship between phage PurZ and archaeal PurA enzymes. Our work elucidates the biocatalytic innovation that remodeled a DNA building block beyond canonical molecular biology. | |||
A third purine biosynthetic pathway encoded by aminoadenine-based viral DNA genomes.,Sleiman D, Garcia PS, Lagune M, Loc'h J, Haouz A, Taib N, Rothlisberger P, Gribaldo S, Marliere P, Kaminski PA Science. 2021 Apr 30;372(6541):516-520. doi: 10.1126/science.abe6494. PMID:33926955<ref>PMID:33926955</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 6tnh" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Adenylosuccinate synthetase 3D structures|Adenylosuccinate synthetase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Haouz A]] | [[Category: Vibrio phage phivc8]] | ||
[[Category: Kaminski | [[Category: Haouz, A]] | ||
[[Category: Loc | [[Category: Kaminski, P A]] | ||
[[Category: | [[Category: Sleiman, D]] | ||
[[Category: H, J Loc]] | |||
[[Category: 6-diaminopurine]] | |||
[[Category: Biosynthetic protein]] | |||
[[Category: Phage phivc8]] | |||
[[Category: Synthetase]] | |||
Revision as of 14:45, 2 June 2021
Deoxyguanylosuccinate synthase (DgsS) quaternary structure with AMPPcP, dGMP, Asp, Magnesium at 2.21 Angstrom resolution
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