4dbs: Difference between revisions

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4dbs]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DBS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4DBS FirstGlance]. <br>
<table><tr><td colspan='2'>[[4dbs]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DBS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4DBS FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0HV:3-[(4-NITRONAPHTHALEN-1-YL)AMINO]BENZOIC+ACID'>0HV</scene>, <scene name='pdbligand=NAP:NADP+NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NAP</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]] 1.852&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0HV:3-[(4-NITRONAPHTHALEN-1-YL)AMINO]BENZOIC+ACID'>0HV</scene>, <scene name='pdbligand=NAP:NADP+NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NAP</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=4dbs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4dbs OCA], [https://pdbe.org/4dbs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4dbs RCSB], [https://www.ebi.ac.uk/pdbsum/4dbs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4dbs 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=4dbs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4dbs OCA], [https://pdbe.org/4dbs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4dbs RCSB], [https://www.ebi.ac.uk/pdbsum/4dbs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4dbs ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/AK1C3_HUMAN AK1C3_HUMAN]] Catalyzes the conversion of aldehydes and ketones to alcohols. Catalyzes the reduction of prostaglandin (PG) D2, PGH2 and phenanthrenequinone (PQ) and the oxidation of 9-alpha,11-beta-PGF2 to PGD2. Functions as a bi-directional 3-alpha-, 17-beta- and 20-alpha HSD. Can interconvert active androgens, estrogens and progestins with their cognate inactive metabolites. Preferentially transforms androstenedione (4-dione) to testosterone.
[https://www.uniprot.org/uniprot/AK1C3_HUMAN AK1C3_HUMAN] Catalyzes the conversion of aldehydes and ketones to alcohols. Catalyzes the reduction of prostaglandin (PG) D2, PGH2 and phenanthrenequinone (PQ) and the oxidation of 9-alpha,11-beta-PGF2 to PGD2. Functions as a bi-directional 3-alpha-, 17-beta- and 20-alpha HSD. Can interconvert active androgens, estrogens and progestins with their cognate inactive metabolites. Preferentially transforms androstenedione (4-dione) to testosterone.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Castrate resistant prostate cancer (CRPC) is associated with increased androgen receptor (AR) signaling often brought about by elevated intratumoral androgen biosynthesis and AR amplification. Inhibition of androgen biosynthesis and/or AR antagonism should be efficacious in the treatment of CRPC. AKR1C3 catalyzes the formation of potent AR ligands from inactive precursors and is one of the most upregulated genes in CRPC. AKR1C3 inhibitors should not inhibit the related isoforms, AKR1C1 and AKR1C2 that are involved in 5alpha-dihydrotestosterone inactivation in the prostate. We have previously developed a series of flufenamic acid analogs as potent and selective AKR1C3 inhibitors [Adeniji, A. O. et al., J. Med. Chem.2012, 55, 2311]. Here we report the X-ray crystal structure of one lead compound 3-((4-(trifluoromethyl)phenyl) amino)benzoic acid (1) in complex with AKR1C3. Compound 1 adopts a similar binding orientation as flufenamic acid, however, its phenylamino ring projects deeper into a subpocket and confers selectivity over the other AKR1C isoforms. We exploited the observation that some flufenamic acid analogs also act as AR antagonists and synthesized a second generation inhibitor, 3-((4-nitronaphthalen-1-yl)amino)benzoic acid (2). Compound 2 retained nanomolar potency and selective inhibition of AKR1C3 but also acted as an AR antagonist. It inhibited 5alpha-dihydrotestosterone stimulated AR reporter gene activity with an IC(50)=4.7muM and produced a concentration dependent reduction in androgen receptor levels in prostate cancer cells. The in vitro and cell-based effects of compound 2 make it a promising lead for development of dual acting agent for CRPC. To illuminate the structural basis of AKR1C3 inhibition, we also report the crystal structure of the AKR1C3.NADP(+).2 complex, which shows that compound 2 forms a unique double-decker structure with AKR1C3.
 
Crystal structures of AKR1C3 containing an N-(aryl)amino-benzoate inhibitor and a bifunctional AKR1C3 inhibitor and androgen receptor antagonist. Therapeutic leads for castrate resistant prostate cancer.,Chen M, Adeniji AO, Twenter BM, Winkler JD, Christianson DW, Penning TM Bioorg Med Chem Lett. 2012 Mar 29. PMID:22507964<ref>PMID:22507964</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4dbs" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Prostaglandin F synthase|Prostaglandin F synthase]]
*[[Prostaglandin F synthase 3D structures|Prostaglandin F synthase 3D structures]]
== References ==
<references/>
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</StructureSection>
</StructureSection>

Latest revision as of 17:30, 14 March 2024

Crystal structure of human 17beta-hydroxysteroid dehydrogenase type 5 (AKR1C3) in complex with NADP+ and 3'-[(4-nitronaphthalen-1-yl)amino]benzoic acidCrystal structure of human 17beta-hydroxysteroid dehydrogenase type 5 (AKR1C3) in complex with NADP+ and 3'-[(4-nitronaphthalen-1-yl)amino]benzoic acid

Structural highlights

4dbs is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.852Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

AK1C3_HUMAN Catalyzes the conversion of aldehydes and ketones to alcohols. Catalyzes the reduction of prostaglandin (PG) D2, PGH2 and phenanthrenequinone (PQ) and the oxidation of 9-alpha,11-beta-PGF2 to PGD2. Functions as a bi-directional 3-alpha-, 17-beta- and 20-alpha HSD. Can interconvert active androgens, estrogens and progestins with their cognate inactive metabolites. Preferentially transforms androstenedione (4-dione) to testosterone.

See Also

4dbs, resolution 1.85Å

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