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| | ==Crystal structure of Bradyrhizobium japonicum glycine:[carrier protein] ligase complexed with cognate carrier protein and AMP== | | ==Crystal structure of Bradyrhizobium japonicum glycine:[carrier protein] ligase complexed with cognate carrier protein and AMP== |
| - | <StructureSection load='4h2s' size='340' side='right' caption='[[4h2s]], [[Resolution|resolution]] 2.15Å' scene=''> | + | <StructureSection load='4h2s' size='340' side='right'caption='[[4h2s]], [[Resolution|resolution]] 2.15Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4h2s]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Bradu Bradu]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4H2S OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4H2S FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4h2s]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bradyrhizobium_diazoefficiens_USDA_110 Bradyrhizobium diazoefficiens USDA 110]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4H2S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4H2S FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=PNS:4-PHOSPHOPANTETHEINE'>PNS</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=PNS:4-PHOSPHOPANTETHEINE'>PNS</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3mf2|3mf2]], [[4h2t|4h2t]], [[4h2u|4h2u]], [[4h2v|4h2v]], [[4h2w|4h2w]], [[4h2x|4h2x]], [[4h2y|4h2y]]</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=4h2s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4h2s OCA], [https://pdbe.org/4h2s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4h2s RCSB], [https://www.ebi.ac.uk/pdbsum/4h2s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4h2s ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">bll0957 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=224911 BRADU]), bsr0959 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=224911 BRADU])</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=4h2s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4h2s OCA], [http://pdbe.org/4h2s PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4h2s RCSB], [http://www.ebi.ac.uk/pdbsum/4h2s PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4h2s ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/AACL1_BRAJA AACL1_BRAJA]] Catalyzes the ATP-dependent activation of L-glycine and its transfer to the phosphopantetheine prosthetic group covalently attached to the vicinal carrier protein bsr0959 of yet unknown function. May participate in nonribosomal peptide synthesis or related processes. L-alanine is a poor substrate whereas L-serine or D-amino acids are not substrates for ATP-dependent activation. Does not display tRNA aminoacylation activity. [[http://www.uniprot.org/uniprot/AACP1_BRAJA AACP1_BRAJA]] Aminoacyl carrier protein. Can be charged with L-glycine via the formation of a thioester bond between the amino acid and the 4'-phosphopantetheinyl prosthetic group, catalyzed by the bll0957 ligase. | + | [https://www.uniprot.org/uniprot/AACL1_BRADU AACL1_BRADU] Catalyzes the ATP-dependent activation of L-glycine and its transfer to the phosphopantetheine prosthetic group covalently attached to the vicinal carrier protein bsr0959 of yet unknown function. May participate in nonribosomal peptide synthesis or related processes. L-alanine is a poor substrate whereas L-serine or D-amino acids are not substrates for ATP-dependent activation. Does not display tRNA aminoacylation activity.<ref>PMID:20663952</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bradu]] | + | [[Category: Bradyrhizobium diazoefficiens USDA 110]] |
| - | [[Category: Ivic, N]] | + | [[Category: Large Structures]] |
| - | [[Category: Luic, M]] | + | [[Category: Ivic N]] |
| - | [[Category: Mocibob, M]] | + | [[Category: Luic M]] |
| - | [[Category: Weygand-Durasevic, I]] | + | [[Category: Mocibob M]] |
| - | [[Category: Aminoacyl-trna synthetase]]
| + | [[Category: Weygand-Durasevic I]] |
| - | [[Category: Atp binding]]
| + | |
| - | [[Category: Carrier protein]]
| + | |
| - | [[Category: Glycine binding]]
| + | |
| - | [[Category: Ligase]]
| + | |
| - | [[Category: Seryl-trna synthetase]]
| + | |
| Structural highlights
Function
AACL1_BRADU Catalyzes the ATP-dependent activation of L-glycine and its transfer to the phosphopantetheine prosthetic group covalently attached to the vicinal carrier protein bsr0959 of yet unknown function. May participate in nonribosomal peptide synthesis or related processes. L-alanine is a poor substrate whereas L-serine or D-amino acids are not substrates for ATP-dependent activation. Does not display tRNA aminoacylation activity.[1]
Publication Abstract from PubMed
Amino acid:[carrier protein] ligases (aa:CP ligases) are recently discovered enzymes that are highly similar to class II aminoacyl-tRNA synthetases (aaRSs). However, while aaRSs aminoacylate tRNA and supply building blocks for ribosomal translation, aa:CP ligases transfer activated amino acids to the phosphopantetheine group of small carrier proteins. We have solved the crystal structure of an aa:CP ligase complexed with the carrier protein (CP). The CP prosthetic group enters the active site from a different direction than tRNA in class II aaRS complexes through an idiosyncratic tunnel. CP binds to aa:CP ligase in a fundamentally different manner compared to tRNA binding by structurally closely related aaRSs. Based on crystallographic analysis, an enzyme of altered CP specificity was designed, and the mechanism of amino acid transfer to the prosthetic group was proposed. The presented study reveals how a conserved class II aaRS catalytic core can adapt to another function through minor structural alterations.
Adaptation of Aminoacyl-tRNA Synthetase Catalytic Core to Carrier Protein Aminoacylation.,Mocibob M, Ivic N, Luic M, Weygand-Durasevic I Structure. 2013 Mar 26. pii: S0969-2126(13)00058-0. doi:, 10.1016/j.str.2013.02.017. PMID:23541895[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Mocibob M, Ivic N, Bilokapic S, Maier T, Luic M, Ban N, Weygand-Durasevic I. Homologs of aminoacyl-tRNA synthetases acylate carrier proteins and provide a link between ribosomal and nonribosomal peptide synthesis. Proc Natl Acad Sci U S A. 2010 Aug 17;107(33):14585-90. Epub 2010 Jul 27. PMID:20663952 doi:10.1073/pnas.1007470107
- ↑ Mocibob M, Ivic N, Luic M, Weygand-Durasevic I. Adaptation of Aminoacyl-tRNA Synthetase Catalytic Core to Carrier Protein Aminoacylation. Structure. 2013 Mar 26. pii: S0969-2126(13)00058-0. doi:, 10.1016/j.str.2013.02.017. PMID:23541895 doi:10.1016/j.str.2013.02.017
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