1b9h

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Current revision (23:21, 27 December 2023) (edit) (undo)
 
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<StructureSection load='1b9h' size='340' side='right'caption='[[1b9h]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
<StructureSection load='1b9h' size='340' side='right'caption='[[1b9h]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[1b9h]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"streptomyces_mediterranei"_margalith_and_beretta_1960 "streptomyces mediterranei" margalith and beretta 1960]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B9H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1B9H FirstGlance]. <br>
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<table><tr><td colspan='2'>[[1b9h]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Amycolatopsis_mediterranei Amycolatopsis mediterranei]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B9H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1B9H FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</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&#8491;</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=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></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=1b9h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b9h OCA], [https://pdbe.org/1b9h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1b9h RCSB], [https://www.ebi.ac.uk/pdbsum/1b9h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1b9h 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=1b9h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b9h OCA], [https://pdbe.org/1b9h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1b9h RCSB], [https://www.ebi.ac.uk/pdbsum/1b9h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1b9h ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[https://www.uniprot.org/uniprot/RIFK_AMYMS RIFK_AMYMS]] Catalyzes the dehydration and aromatization of 5-amino-5-deoxy-3-dehydroshikimate (aminoDHS) to 3-amino-5-hydroxybenzoate (AHBA), a compound that then serves as the starter unit for the assembly of a polyketide during the biosynthesis of rifamycin B and other ansamycin antibiotics. Can not utilize 5-deoxy-5-amino-3-dehydroquinate (aminoDHQ), 5-deoxy-5-aminoshikimate (aminoSA), quinate, 3-dehydroquinate, or 3-dehydroshikimate (DHS) as substrate.<ref>PMID:9497318</ref> In a complex with RifL, RifK may have a second function in the AHBA pathway, acting as a transaminase introducing the nitrogen into the first pathway intermediate, UDP-3-keto-D-glucose, to give UDP-kanosamine. Appears to use glutamine as the nitrogen donor; NH(4)+ or asparagine are 30% less effective as nitrogen donors and neither glutamate nor aspartate show activity.<ref>PMID:9497318</ref>
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[https://www.uniprot.org/uniprot/RIFK_AMYMS RIFK_AMYMS] Catalyzes the dehydration and aromatization of 5-amino-5-deoxy-3-dehydroshikimate (aminoDHS) to 3-amino-5-hydroxybenzoate (AHBA), a compound that then serves as the starter unit for the assembly of a polyketide during the biosynthesis of rifamycin B and other ansamycin antibiotics. Can not utilize 5-deoxy-5-amino-3-dehydroquinate (aminoDHQ), 5-deoxy-5-aminoshikimate (aminoSA), quinate, 3-dehydroquinate, or 3-dehydroshikimate (DHS) as substrate.<ref>PMID:9497318</ref> In a complex with RifL, RifK may have a second function in the AHBA pathway, acting as a transaminase introducing the nitrogen into the first pathway intermediate, UDP-3-keto-D-glucose, to give UDP-kanosamine. Appears to use glutamine as the nitrogen donor; NH(4)+ or asparagine are 30% less effective as nitrogen donors and neither glutamate nor aspartate show activity.<ref>PMID:9497318</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>
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[[Category: Streptomyces mediterranei margalith and beretta 1960]]
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[[Category: Amycolatopsis mediterranei]]
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: Beeby, M]]
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[[Category: Beeby M]]
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[[Category: Eads, J C]]
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[[Category: Eads JC]]
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[[Category: Floss, H G]]
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[[Category: Floss HG]]
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[[Category: Scapin, G]]
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[[Category: Scapin G]]
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[[Category: Yu, T W]]
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[[Category: Yu T-W]]

Current revision

CRYSTAL STRUCTURE OF 3-AMINO-5-HYDROXYBENZOIC ACID (AHBA) SYNTHASE

PDB ID 1b9h

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