Primary Citation PubMed: 23166518
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Evolution of minimal specificity and promiscuity in steroid hormone receptors.
(2012) PLoS Genet 8
PubMed: 23166518 | PubMedCentral: PMC3499368 | DOI: 10.1371/journal.pgen.1003072
AncSR2 structures with progesterone and DOC have PDB accessions 4FN9 and 4FNE, respectively.
Publication Year: 2012
X-ray crystal structure of the ancestral 3-ketosteroid receptor-progesterone-mifepristone complex shows mifepristone bound at the coactivator binding interface.
(2013) PLoS One 8
PubMed: 24260475 | PubMedCentral: PMC3834340 | DOI: 10.1371/journal.pone.0080761
Improved resolution of the ancSR2-progesterone structure permits visualization of D-ring contacts The structure overlays very closely with the structures of both the ancSR2–progesterone comple... (PDB accession code: 4FN9) and the PR–progesterone complex (PDB accession code: 1A28); the root mean squared deviation values for all atoms between these structures are 0.3 Å and 0.6 Å, respectively ( Figure 6A ).
A second bound mifepristone molecule sits at the base of the receptor and interacts with crystallographic symmetry mates; this molecule alters the crystal packing conditions from a previously published structure of the ancSR2—progesterone complex (PDB accession code: 4FN9) [ 17 ].
Initial phases were determined using the previously published ancSR2–progesterone complex (PBD accession code: 4FN9) as the initial search model in Phenix-MR v1.7.1 [ 19 , 20 ].
A cartoon representation of the ancSR2–progesterone–mifepristone (slate blue), ancSR2–progesterone (orange, PDB accession code: 4FN9), and progesterone receptor–progesterone (purple, PDB accession code 1A28) complexes overlay with high overall structural similarity.
Publication Year: 2013
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