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| | ==Crystal structure of S. cerevisiae mitochondrial GatFAB== | | ==Crystal structure of S. cerevisiae mitochondrial GatFAB== |
| - | <StructureSection load='4n0h' size='340' side='right' caption='[[4n0h]], [[Resolution|resolution]] 1.95Å' scene=''> | + | <StructureSection load='4n0h' size='340' side='right'caption='[[4n0h]], [[Resolution|resolution]] 1.95Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4n0h]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Baker's_yeast Baker's yeast]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4N0H OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4N0H FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4n0h]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4N0H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4N0H FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NO3:NITRATE+ION'>NO3</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NO3:NITRATE+ION'>NO3</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4n0i|4n0i]]</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=4n0h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4n0h OCA], [https://pdbe.org/4n0h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4n0h RCSB], [https://www.ebi.ac.uk/pdbsum/4n0h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4n0h ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GatA, GEP6, HER2, LRC6, YMR293C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast]), GatB, PET112, YBL0724, YBL080C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast]), GatF, GTF1, YGR102C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast])</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=4n0h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4n0h OCA], [http://pdbe.org/4n0h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4n0h RCSB], [http://www.ebi.ac.uk/pdbsum/4n0h PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4n0h ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/GATA_YEAST GATA_YEAST]] Allows the formation of correctly charged Gln-tRNA(Gln) through the transamidation of misacylated Glu-tRNA(Gln) in the mitochondria. The reaction takes place in the presence of glutamine and ATP through an activated gamma-phospho-Glu-tRNA(Gln). Required for HMG2-induced ER-remodeling.<ref>PMID:19417106</ref> <ref>PMID:18667535</ref> [[http://www.uniprot.org/uniprot/GATF_YEAST GATF_YEAST]] Allows the formation of correctly charged Gln-tRNA(Gln) through the transamidation of misacylated Glu-tRNA(Gln) in the mitochondria. The reaction takes place in the presence of glutamine and ATP through an activated gamma-phospho-Glu-tRNA(Gln). Required for proper protein synthesis within the mitochondrion.<ref>PMID:19417106</ref> <ref>PMID:21799017</ref> [[http://www.uniprot.org/uniprot/GATB_YEAST GATB_YEAST]] Allows the formation of correctly charged Gln-tRNA(Gln) through the transamidation of misacylated Glu-tRNA(Gln) in the mitochondria. The reaction takes place in the presence of glutamine and ATP through an activated gamma-phospho-Glu-tRNA(Gln).<ref>PMID:19417106</ref> | + | [https://www.uniprot.org/uniprot/GATA_YEAST GATA_YEAST] Allows the formation of correctly charged Gln-tRNA(Gln) through the transamidation of misacylated Glu-tRNA(Gln) in the mitochondria. The reaction takes place in the presence of glutamine and ATP through an activated gamma-phospho-Glu-tRNA(Gln). Required for HMG2-induced ER-remodeling.<ref>PMID:19417106</ref> <ref>PMID:18667535</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 4n0h" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 4n0h" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Glutamyl-tRNA(Gln) amidotransferase|Glutamyl-tRNA(Gln) amidotransferase]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Baker's yeast]] | + | [[Category: Large Structures]] |
| - | [[Category: Araiso, Y]] | + | [[Category: Saccharomyces cerevisiae S288C]] |
| - | [[Category: Ishitani, R]] | + | [[Category: Araiso Y]] |
| - | [[Category: Nureki, O]] | + | [[Category: Ishitani R]] |
| - | [[Category: Amidotransferase]] | + | [[Category: Nureki O]] |
| - | [[Category: Ligase]]
| + | |
| Structural highlights
Function
GATA_YEAST Allows the formation of correctly charged Gln-tRNA(Gln) through the transamidation of misacylated Glu-tRNA(Gln) in the mitochondria. The reaction takes place in the presence of glutamine and ATP through an activated gamma-phospho-Glu-tRNA(Gln). Required for HMG2-induced ER-remodeling.[1] [2]
Publication Abstract from PubMed
Yeast mitochondrial Gln-mtRNAGln is synthesized by the transamidation of mischarged Glu-mtRNAGln by a non-canonical heterotrimeric tRNA-dependent amidotransferase (AdT). The GatA and GatB subunits of the yeast AdT (GatFAB) are well conserved among bacteria and eukaryota, but the GatF subunit is a fungi-specific ortholog of the GatC subunit found in all other known heterotrimeric AdTs (GatCAB). Here we report the crystal structure of yeast mitochondrial GatFAB at 2.0 A resolution. The C-terminal region of GatF encircles the GatA-GatB interface in the same manner as GatC, but the N-terminal extension domain (NTD) of GatF forms several additional hydrophobic and hydrophilic interactions with GatA. NTD-deletion mutants displayed growth defects, but retained the ability to respire. Truncation of the NTD in purified mutants reduced glutaminase and transamidase activities when glutamine was used as the ammonia donor, but increased transamidase activity relative to the full-length enzyme when the donor was ammonium chloride. Our structure-based functional analyses suggest the NTD is a trans-acting scaffolding peptide for the GatA glutaminase active site. The positive surface charge and novel fold of the GatF-GatA interface, shown in this first crystal structure of an organellar AdT, stand in contrast with the more conventional, negatively charged bacterial AdTs described previously.
Crystal structure of Saccharomyces cerevisiae mitochondrial GatFAB reveals a novel subunit assembly in tRNA-dependent amidotransferases.,Araiso Y, Huot JL, Sekiguchi T, Frechin M, Fischer F, Enkler L, Senger B, Ishitani R, Becker HD, Nureki O Nucleic Acids Res. 2014 Apr 1. PMID:24692665[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Frechin M, Senger B, Braye M, Kern D, Martin RP, Becker HD. Yeast mitochondrial Gln-tRNA(Gln) is generated by a GatFAB-mediated transamidation pathway involving Arc1p-controlled subcellular sorting of cytosolic GluRS. Genes Dev. 2009 May 1;23(9):1119-30. doi: 10.1101/gad.518109. PMID:19417106 doi:http://dx.doi.org/10.1101/gad.518109
- ↑ Federovitch CM, Jones YZ, Tong AH, Boone C, Prinz WA, Hampton RY. Genetic and structural analysis of Hmg2p-induced endoplasmic reticulum remodeling in Saccharomyces cerevisiae. Mol Biol Cell. 2008 Oct;19(10):4506-20. Epub 2008 Jul 30. PMID:18667535 doi:http://dx.doi.org/E07-11-1188
- ↑ Araiso Y, Huot JL, Sekiguchi T, Frechin M, Fischer F, Enkler L, Senger B, Ishitani R, Becker HD, Nureki O. Crystal structure of Saccharomyces cerevisiae mitochondrial GatFAB reveals a novel subunit assembly in tRNA-dependent amidotransferases. Nucleic Acids Res. 2014 Apr 1. PMID:24692665 doi:http://dx.doi.org/10.1093/nar/gku234
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