7rrb

<StructureSection load='7rrb' size='340' side='right'caption='[[7rrb]], [[Resolution|resolution]] 2.69&Aring;' scene=''>

<table><tr><td colspan='2'>[[7rrb]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7RRB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7RRB FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=6ZI:3-[4-(6-cyclopropylpyridin-3-yl)phenyl]-N-(4-fluorophenyl)oxetane-3-carboxamide'>6ZI</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=7rrb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7rrb OCA], [https://pdbe.org/7rrb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7rrb RCSB], [https://www.ebi.ac.uk/pdbsum/7rrb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7rrb ProSAT]</span></td></tr>

== Function ==

[[https://www.uniprot.org/uniprot/I23O1_HUMAN I23O1_HUMAN]] Catalyzes the cleavage of the pyrrol ring of tryptophan and incorporates both atoms of a molecule of oxygen.<ref>PMID:17671174</ref>

<div style="background-color:#fffaf0;">

== Publication Abstract from PubMed ==

3,3-Disubstituted oxetanes have been utilized as bioisosteres for gem-dimethyl and cyclobutane functionalities. We report the discovery of a novel class of oxetane indole-amine 2,3-dioxygenase (IDO1) inhibitors suitable for Q3W (once every 3 weeks) oral and parenteral dosing. A diamide class of IDO inhibitors was discovered through an automated ligand identification system (ALIS). Installation of an oxetane and fluorophenyl dramatically improved the potency. Identification of a biaryl moiety as an unconventional amide isostere addressed the metabolic liability of amide hydrolysis. Metabolism identification (Met-ID)-guided target design and the introduction of polarity resulted in the discovery of potent IDO inhibitors with excellent pharmacokinetic (PK) profiles in multiple species. To enable rapid synthesis of the key oxetane intermediate, a novel oxetane ring cyclization was also developed, as well as optimization of a literature route on kg scale. These IDO inhibitors may enable unambiguous proof-of-concept testing for the IDO1 inhibition mechanism for oncology.

Oxetane Promise Delivered: Discovery of Long-Acting IDO1 Inhibitors Suitable for Q3W Oral or Parenteral Dosing.,Li D, Sloman DL, Achab A, Zhou H, McGowan MA, White C, Gibeau C, Zhang H, Pu Q, Bharathan I, Hopkins B, Liu K, Ferguson H, Fradera X, Lesburg CA, Martinot TA, Qi J, Song ZJ, Yin J, Zhang H, Song L, Wan B, DAddio S, Solban N, Miller JR, Zamlynny B, Bass A, Freeland E, Ykoruk B, Hilliard C, Ferraro J, Zhai J, Knemeyer I, Otte KM, Vincent S, Sciammetta N, Pasternak A, Bennett DJ, Han Y J Med Chem. 2022 Mar 3. doi: 10.1021/acs.jmedchem.1c01670. PMID:35239336<ref>PMID:35239336</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 7rrb" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Indoleamine 2,3-dioxygenase]]

[[Category: Lesburg, C A]]

[[Category: Oxidoreductase]]