4qi4: Difference between revisions
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==Dehydrogenase domain of Myriococcum thermophilum cellobiose dehydrogenase, MtDH== | |||
<StructureSection load='4qi4' size='340' side='right'caption='[[4qi4]], [[Resolution|resolution]] 2.70Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4qi4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermothelomyces_myriococcoides Thermothelomyces myriococcoides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4QI4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4QI4 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CD:CADMIUM+ION'>CD</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</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=4qi4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4qi4 OCA], [https://pdbe.org/4qi4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4qi4 RCSB], [https://www.ebi.ac.uk/pdbsum/4qi4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4qi4 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/A9XK88_9PEZI A9XK88_9PEZI] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
A new paradigm for cellulose depolymerization by fungi focuses on an oxidative mechanism involving cellobiose dehydrogenases (CDH) and copper-dependent lytic polysaccharide monooxygenases (LPMO); however, mechanistic studies have been hampered by the lack of structural information regarding CDH. CDH contains a haem-binding cytochrome (CYT) connected via a flexible linker to a flavin-dependent dehydrogenase (DH). Electrons are generated from cellobiose oxidation catalysed by DH and shuttled via CYT to LPMO. Here we present structural analyses that provide a comprehensive picture of CDH conformers, which govern the electron transfer between redox centres. Using structure-based site-directed mutagenesis, rapid kinetics analysis and molecular docking, we demonstrate that flavin-to-haem interdomain electron transfer (IET) is enabled by a haem propionate group and that rapid IET requires a closed CDH state in which the propionate is tightly enfolded by DH. Following haem reduction, CYT reduces LPMO to initiate oxygen activation at the copper centre and subsequent cellulose depolymerization. | |||
Structural basis for cellobiose dehydrogenase action during oxidative cellulose degradation.,Tan TC, Kracher D, Gandini R, Sygmund C, Kittl R, Haltrich D, Hallberg BM, Ludwig R, Divne C Nat Commun. 2015 Jul 7;6:7542. doi: 10.1038/ncomms8542. PMID:26151670<ref>PMID:26151670</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4qi4" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Thermothelomyces myriococcoides]] | |||
[[Category: Divne C]] | |||
[[Category: Gandini R]] | |||
[[Category: Hallberg BM]] | |||
[[Category: Haltrich D]] | |||
[[Category: Kittl R]] | |||
[[Category: Ludwig R]] | |||
[[Category: Sygmund C]] | |||
[[Category: Tan TC]] | |||