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==Human placental aromatase cytochrome P450 (CYP19A1) refined at 2.75 angstrom==
==Human placental aromatase cytochrome P450 (CYP19A1) refined at 2.75 angstrom==
<StructureSection load='3s79' size='340' side='right' caption='[[3s79]], [[Resolution|resolution]] 2.75&Aring;' scene=''>
<StructureSection load='3s79' size='340' side='right'caption='[[3s79]], [[Resolution|resolution]] 2.75&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3s79]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3S79 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3S79 FirstGlance]. <br>
<table><tr><td colspan='2'>[[3s79]] is a 1 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=3S79 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3S79 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ASD:4-ANDROSTENE-3-17-DIONE'>ASD</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</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]] 2.75&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3s7s|3s7s]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ASD:4-ANDROSTENE-3-17-DIONE'>ASD</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CYP19A1, ARO1, CYAR, CYP19 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3s79 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3s79 OCA], [https://pdbe.org/3s79 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3s79 RCSB], [https://www.ebi.ac.uk/pdbsum/3s79 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3s79 ProSAT]</span></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Unspecific_monooxygenase Unspecific monooxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.14.1 1.14.14.1] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3s79 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3s79 OCA], [http://pdbe.org/3s79 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3s79 RCSB], [http://www.ebi.ac.uk/pdbsum/3s79 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3s79 ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
== Disease ==
[[http://www.uniprot.org/uniprot/CP19A_HUMAN CP19A_HUMAN]] Defects in CYP19A1 are a cause of aromatase excess syndrome (AEXS) [MIM:[http://omim.org/entry/139300 139300]]; also known as familial gynecomastia. AEXS is characterized by an estrogen excess due to an increased aromatase activity.  Defects in CYP19A1 are the cause of aromatase deficiency (AROD) [MIM:[http://omim.org/entry/613546 613546]]. AROD is a rare disease in which fetal androgens are not converted into estrogens due to placental aromatase deficiency. Thus, pregnant women exhibit a hirsutism, which spontaneously resolves after post-partum. At birth, female babies present with pseudohermaphroditism due to virilization of extern genital organs. In adult females, manifestations include delay of puberty, breast hypoplasia and primary amenorrhoea with multicystic ovaries.<ref>PMID:8265607</ref> <ref>PMID:8530621</ref> <ref>PMID:9211678</ref>
[https://www.uniprot.org/uniprot/CP19A_HUMAN CP19A_HUMAN] Defects in CYP19A1 are a cause of aromatase excess syndrome (AEXS) [MIM:[https://omim.org/entry/139300 139300]; also known as familial gynecomastia. AEXS is characterized by an estrogen excess due to an increased aromatase activity.  Defects in CYP19A1 are the cause of aromatase deficiency (AROD) [MIM:[https://omim.org/entry/613546 613546]. AROD is a rare disease in which fetal androgens are not converted into estrogens due to placental aromatase deficiency. Thus, pregnant women exhibit a hirsutism, which spontaneously resolves after post-partum. At birth, female babies present with pseudohermaphroditism due to virilization of extern genital organs. In adult females, manifestations include delay of puberty, breast hypoplasia and primary amenorrhoea with multicystic ovaries.<ref>PMID:8265607</ref> <ref>PMID:8530621</ref> <ref>PMID:9211678</ref>  
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/CP19A_HUMAN CP19A_HUMAN]] Catalyzes the formation of aromatic C18 estrogens from C19 androgens.
[https://www.uniprot.org/uniprot/CP19A_HUMAN CP19A_HUMAN] Catalyzes the formation of aromatic C18 estrogens from C19 androgens.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Human cytochrome P450 aromatase catalyzes with high specificity the synthesis of estrogens from androgens. Aromatase inhibitors (AIs) such as exemestane, 6-methylidene-androsta-1,4-diene-3,17-dione, are preeminent drugs for the treatment of estrogen-dependent breast cancer. The crystal structure of human placental aromatase has shown an androgen-specific active site. By utilizing the structural data, novel C6-substituted androsta-1,4-diene-3,17-dione inhibitors have been designed. Several of the C6-substituted 2-alkynyloxy compounds inhibit purified placental aromatase with IC50s in the nM range. Anti-proliferation studies in a MCF-7 breast cancer cell line demonstrate that some of these compounds have EC50s better than 1nM, exceeding exemestane. X-ray structures of aromatase-complexes of two potent compounds reveal that, per their design, the novel side groups protrude into the opening to the access channel unoccupied in the enzyme-substrate/exemestane complexes. The observed structure-activity relationship is borne out by the X-ray data. Structure-guided design permits utilization of the aromatase-specific interactions for the development of next generation AIs.


Novel Aromatase Inhibitors By Structure-Guided Design.,Ghosh D, Lo J, Xi J, Hubbell S, Egbuta C, Jiang W, An J, Morton D, Valette D, Griswold J, Davies HM J Med Chem. 2012 Sep 5. PMID:22951074<ref>PMID:22951074</ref>
==See Also==
 
*[[Cytochrome P450 3D structures|Cytochrome P450 3D structures]]
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3s79" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Unspecific monooxygenase]]
[[Category: Large Structures]]
[[Category: Ghosh, D]]
[[Category: Ghosh D]]
[[Category: Oxidoreductase]]

Latest revision as of 15:48, 14 March 2024

Human placental aromatase cytochrome P450 (CYP19A1) refined at 2.75 angstromHuman placental aromatase cytochrome P450 (CYP19A1) refined at 2.75 angstrom

Structural highlights

3s79 is a 1 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 2.75Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

CP19A_HUMAN Defects in CYP19A1 are a cause of aromatase excess syndrome (AEXS) [MIM:139300; also known as familial gynecomastia. AEXS is characterized by an estrogen excess due to an increased aromatase activity. Defects in CYP19A1 are the cause of aromatase deficiency (AROD) [MIM:613546. AROD is a rare disease in which fetal androgens are not converted into estrogens due to placental aromatase deficiency. Thus, pregnant women exhibit a hirsutism, which spontaneously resolves after post-partum. At birth, female babies present with pseudohermaphroditism due to virilization of extern genital organs. In adult females, manifestations include delay of puberty, breast hypoplasia and primary amenorrhoea with multicystic ovaries.[1] [2] [3]

Function

CP19A_HUMAN Catalyzes the formation of aromatic C18 estrogens from C19 androgens.

See Also

References

  1. ↑ Ito Y, Fisher CR, Conte FA, Grumbach MM, Simpson ER. Molecular basis of aromatase deficiency in an adult female with sexual infantilism and polycystic ovaries. Proc Natl Acad Sci U S A. 1993 Dec 15;90(24):11673-7. PMID:8265607
  2. ↑ Morishima A, Grumbach MM, Simpson ER, Fisher C, Qin K. Aromatase deficiency in male and female siblings caused by a novel mutation and the physiological role of estrogens. J Clin Endocrinol Metab. 1995 Dec;80(12):3689-98. PMID:8530621
  3. ↑ Carani C, Qin K, Simoni M, Faustini-Fustini M, Serpente S, Boyd J, Korach KS, Simpson ER. Effect of testosterone and estradiol in a man with aromatase deficiency. N Engl J Med. 1997 Jul 10;337(2):91-5. PMID:9211678 doi:10.1056/NEJM199707103370204

3s79, resolution 2.75Å

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