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| | <StructureSection load='3gbr' size='340' side='right'caption='[[3gbr]], [[Resolution|resolution]] 2.25Å' scene=''> | | <StructureSection load='3gbr' size='340' side='right'caption='[[3gbr]], [[Resolution|resolution]] 2.25Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3gbr]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_35091 Atcc 35091]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GBR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3GBR FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3gbr]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharolobus_solfataricus Saccharolobus solfataricus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GBR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3GBR FirstGlance]. <br> |
| - | </td></tr><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=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=PRP:ALPHA-PHOSPHORIBOSYLPYROPHOSPHORIC+ACID'>PRP</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.25Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2gvq|2gvq]], [[1o17|1o17]], [[1gxb|1gxb]]</div></td></tr>
| + | <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=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=PRP:ALPHA-PHOSPHORIBOSYLPYROPHOSPHORIC+ACID'>PRP</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">trpD ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2287 ATCC 35091])</td></tr>
| + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Anthranilate_phosphoribosyltransferase Anthranilate phosphoribosyltransferase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.18 2.4.2.18] </span></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=3gbr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3gbr OCA], [https://pdbe.org/3gbr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3gbr RCSB], [https://www.ebi.ac.uk/pdbsum/3gbr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3gbr ProSAT]</span></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=3gbr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3gbr OCA], [https://pdbe.org/3gbr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3gbr RCSB], [https://www.ebi.ac.uk/pdbsum/3gbr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3gbr ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/TRPD_SULSO TRPD_SULSO]] Catalyzes the transfer of the phosphoribosyl group of 5-phosphorylribose-1-pyrophosphate (PRPP) to anthranilate to yield N-(5'-phosphoribosyl)-anthranilate (PRA).<ref>PMID:11298741</ref> <ref>PMID:16714288</ref>
| + | [https://www.uniprot.org/uniprot/TRPD_SACS2 TRPD_SACS2] Catalyzes the transfer of the phosphoribosyl group of 5-phosphorylribose-1-pyrophosphate (PRPP) to anthranilate to yield N-(5'-phosphoribosyl)-anthranilate (PRA).[HAMAP-Rule:MF_00211]<ref>PMID:11298741</ref> <ref>PMID:16714288</ref> |
| | == 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: Anthranilate phosphoribosyltransferase]] | |
| - | [[Category: Atcc 35091]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Bruning, M]] | + | [[Category: Saccharolobus solfataricus]] |
| - | [[Category: Deuss, M]] | + | [[Category: Bruning M]] |
| - | [[Category: Ivens, A]] | + | [[Category: Deuss M]] |
| - | [[Category: Mayans, O]] | + | [[Category: Ivens A]] |
| - | [[Category: Schlee, S]] | + | [[Category: Mayans O]] |
| - | [[Category: Sterner, R]] | + | [[Category: Schlee S]] |
| - | [[Category: Amino-acid biosynthesis]]
| + | [[Category: Sterner R]] |
| - | [[Category: Aromatic amino acid biosynthesis]]
| + | |
| - | [[Category: Glycosyltransferase]]
| + | |
| - | [[Category: Transferase]]
| + | |
| - | [[Category: Tryptophan biosynthesis]]
| + | |
| Structural highlights
Function
TRPD_SACS2 Catalyzes the transfer of the phosphoribosyl group of 5-phosphorylribose-1-pyrophosphate (PRPP) to anthranilate to yield N-(5'-phosphoribosyl)-anthranilate (PRA).[HAMAP-Rule:MF_00211][1] [2]
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
Anthranilate phosphoribosyltransferase from the hyperthermophilic archaeon Sulfolobus solfataricus (ssAnPRT) is encoded by the sstrpD gene and catalyzes the reaction of anthranilate (AA) with a complex of Mg(2+) and 5'-phosphoribosyl-alpha1-pyrophosphate (Mg.PRPP) to N-(5'-phosphoribosyl)-anthranilate (PRA) and pyrophosphate (PP(i)) within tryptophan biosynthesis. The ssAnPRT enzyme is highly thermostable (half-life at 85 degrees C = 35 min) but only marginally active at ambient temperatures (turnover number at 37 degrees C = 0.33 s(-1)). To understand the reason for the poor catalytic proficiency of ssAnPRT, we have isolated from an sstrpD library the activated ssAnPRT-D83G + F149S double mutant by metabolic complementation of an auxotrophic Escherichia coli strain. Whereas the activity of purified wild-type ssAnPRT is strongly reduced in the presence of high concentrations of Mg(2+) ions, this inhibition is no longer observed in the double mutant and the ssAnPRT-D83G single mutant. The comparison of the crystal structures of activated and wild-type ssAnPRT shows that the D83G mutation alters the binding mode of the substrate Mg.PRPP. Analysis of PRPP and Mg(2+)-dependent enzymatic activity indicates that this leads to a decreased affinity for a second Mg(2+) ion and thus reduces the concentration of enzymes with the inhibitory Mg(2).PRPP complex bound to the active site. Moreover, the turnover number of the double mutant ssAnPRT-D83G + F149S is elevated 40-fold compared to the wild-type enzyme, which can be attributed to an accelerated release of the product PRA. This effect appears to be mainly caused by an increased conformational flexibility induced by the F149S mutation, a hypothesis which is supported by the reduced thermal stability of the ssAnPRT-F149S single mutant.
Activation of anthranilate phosphoribosyltransferase from Sulfolobus solfataricus by removal of magnesium inhibition and acceleration of product release .,Schlee S, Deuss M, Bruning M, Ivens A, Schwab T, Hellmann N, Mayans O, Sterner R Biochemistry. 2009 Jun 16;48(23):5199-209. PMID:19385665[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Ivens A, Mayans O, Szadkowski H, Wilmanns M, Kirschner K. Purification, characterization and crystallization of thermostable anthranilate phosphoribosyltransferase from Sulfolobus solfataricus. Eur J Biochem. 2001 Apr;268(8):2246-52. PMID:11298741
- ↑ Marino M, Deuss M, Svergun DI, Konarev PV, Sterner R, Mayans O. Structural and mutational analysis of substrate complexation by anthranilate phosphoribosyltransferase from Sulfolobus solfataricus. J Biol Chem. 2006 Jul 28;281(30):21410-21. Epub 2006 May 19. PMID:16714288 doi:10.1074/jbc.M601403200
- ↑ Schlee S, Deuss M, Bruning M, Ivens A, Schwab T, Hellmann N, Mayans O, Sterner R. Activation of anthranilate phosphoribosyltransferase from Sulfolobus solfataricus by removal of magnesium inhibition and acceleration of product release . Biochemistry. 2009 Jun 16;48(23):5199-209. PMID:19385665 doi:10.1021/bi802335s
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