View source for 9htk


==Cereblon isoform 4 from Magnetospirillum gryphiswaldense in complex with glutarimide based compound 2n==
<StructureSection load='9htk' size='340' side='right'caption='[[9htk]], [[Resolution|resolution]] 1.49&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9htk]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Magnetospirillum_gryphiswaldense Magnetospirillum gryphiswaldense]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9HTK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9HTK 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]] 1.49&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A1I4R:(3~{R})-3-phenylsulfanylpiperidine-2,6-dione'>A1I4R</scene>, <scene name='pdbligand=A1IXA:(3~{S})-3-phenylsulfanylpiperidine-2,6-dione'>A1IXA</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=9htk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9htk OCA], [https://pdbe.org/9htk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9htk RCSB], [https://www.ebi.ac.uk/pdbsum/9htk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9htk ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A4TVL0_9PROT A4TVL0_9PROT] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
In this work we present an easy, one-step synthetic protocol to explore a large chemical space of glutarimide-based cereblon (CRBN) ligands for targeted protein degradation. It is built upon our recently suggested approach to generating structurally diverse series of alpha-substituted glutarimide derivatives through an efficient Rh(II)-catalyzed X-H insertion reaction of 3-diazopiperidine-2,6-dione, with moderate to high yields. In total, 25 glutarimide derivatives incorporating variable side chains were synthesized and evaluated in vitro. All ligands showed a favorable lipophilicity, and several were able to outperform the binding affinity of thalidomide as a reference. In addition, most compounds showed low intrinsic cytotoxicity in myeloma cell lines and human peripheral blood mononuclear cells, and did not recruit canonical neosubstrates. A cellular thermal shift assay further demonstrated that the most potent analogs stabilize CRBN in live cells, confirming their on-target engagement. The development of the series was accompanied by a crystallographic study, which rationalizes the observed improvements in binding affinity and neosubstrate selectivity, and can support further development towards molecular glue activity and PROTACs design.

Extending the chemical space of glutarimide-based cereblon ligands through an efficient Rh(II)-catalyzed X-H insertion reaction.,Levashova E, Bischof L, Bunev A, Sapegin A, Grygor'eva O, Kudinov A, Ebeling S, Tatarinov I, Dar'in D, Kantin G, Hartmann MD, Kalinin S Eur J Med Chem. 2025 Oct 3;301:118235. doi: 10.1016/j.ejmech.2025.118235. PMID:41086529<ref>PMID:41086529</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 9htk" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Magnetospirillum gryphiswaldense]]
[[Category: Bischof L]]
[[Category: Hartmann MD]]