8bbs
From Proteopedia
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[8bbs]] 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=8BBS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8BBS FirstGlance]. <br> | <table><tr><td colspan='2'>[[8bbs]] 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=8BBS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8BBS FirstGlance]. <br> | ||
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=NAP:NADP+NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NAP</scene>, <scene name='pdbligand=QBO:(4~{R})-4-[(1~{R},2~{S},5~{R},6~{R},13~{S},14~{S},17~{R},19~{R})-6,14-dimethyl-17-oxidanyl-7,8,9,10-tetrazapentacyclo[11.8.0.0^{2,6}.0^{7,11}.0^{14,19}]henicosa-8,10-dien-5-yl]pentanoic+acid'>QBO</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]] 1.4Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=NAP:NADP+NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NAP</scene>, <scene name='pdbligand=QBO:(4~{R})-4-[(1~{R},2~{S},5~{R},6~{R},13~{S},14~{S},17~{R},19~{R})-6,14-dimethyl-17-oxidanyl-7,8,9,10-tetrazapentacyclo[11.8.0.0^{2,6}.0^{7,11}.0^{14,19}]henicosa-8,10-dien-5-yl]pentanoic+acid'>QBO</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=8bbs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8bbs OCA], [https://pdbe.org/8bbs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8bbs RCSB], [https://www.ebi.ac.uk/pdbsum/8bbs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8bbs 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=8bbs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8bbs OCA], [https://pdbe.org/8bbs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8bbs RCSB], [https://www.ebi.ac.uk/pdbsum/8bbs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8bbs 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 == | ||
| - | Aldo-keto reductase 1C3 (AKR1C3) catalyzes the reduction of androstenedione to testosterone and reduces the effectiveness of chemotherapeutics. AKR1C3 is a target for treatment of breast and prostate cancer and AKR1C3 inhibition could be an effective adjuvant therapy in the context of leukemia and other cancers. In the present study, steroidal bile acid fused tetrazoles were screened for their ability to inhibit AKR1C3. Four C24 bile acids with C-ring fused tetrazoles were moderate to strong AKR1C3 inhibitors (37-88% inhibition), while B-ring fused tetrazoles had no effect on AKR1C3 activity. Based on a fluorescence assay in yeast cells, these four compounds displayed no affinity for estrogen receptor-alpha, or the androgen receptor, suggesting a lack of estrogenic or androgenic effects. A top inhibitor showed specificity for AKR1C3 over AKR1C2, and inhibited AKR1C3 with an IC(50) of approximately 7 muM. The structure of AKR1C3.NADP(+) in complex with this C-ring fused bile acid tetrazole was determined by X-ray crystallography at 1.4 A resolution, revealing that the C24 carboxylate is anchored to the catalytic oxyanion site (H117, Y55); meanwhile the tetrazole interacts with a tryptophan (W227) important for steroid recognition. Molecular docking predicts that all four top AKR1C3 inhibitors bind with nearly identical geometry, suggesting that C-ring bile acid fused tetrazoles represent a new class of AKR1C3 inhibitors. | ||
| - | + | ==See Also== | |
| - | + | *[[Prostaglandin F synthase 3D structures|Prostaglandin F synthase 3D structures]] | |
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Structure of AKR1C3 in complex with a bile acid fused tetrazole inhibitor
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Categories: Homo sapiens | Large Structures | Bekic S | Brynda J | Celic AS | Kugler M | Marinovic M | Petri ET | Rezacova P | Skerlova J | Skoric D
