Substrate SpecificityEstradiolCorpus LuteumProgesterone CongenersMifepristoneProgestinsKineticsEstrusLuteinizing HormonePregnancyUterusOvariectomyLuteal PhaseMolecular Sequence DataPregnancy, AnimalOvulationEndometriumReceptors, EstrogenOvaryHormone AntagonistsAmino Acid SequenceEstrogensDinoprostMenstrual CycleHydroxyprogesteronesBinding SitesLuteal CellsCattlePseudopregnancyChorionic GonadotropinFollicle Stimulating HormoneGranulosa CellsGonanes20-alpha-DihydroprogesteroneCatalysisGonadal Steroid HormonesOvarian FollicleSteroidsOviductsSheepNorpregnadienesProtein BindingModels, MolecularEstrous CycleFollicular PhasePregnenoloneCastrationLuteolysisBreast Neoplasms20-Hydroxysteroid Dehydrogenases3-Hydroxysteroid DehydrogenasesAdministration, IntravaginalTime FactorsProlactinOxytocinMyometriumRadioimmunoassayRecombinant ProteinsHydrolysisCells, CulturedBase SequenceAndrostenedioneEscherichia coliTestosteroneRNA, Messenger5-alpha-DihydroprogesteroneGonadotropin-Releasing HormoneCatalytic DomainHydrogen-Ion ConcentrationPhosphorylationProgesterone ReductaseEstroneDiestrusPregnancy MaintenanceSwineDose-Response Relationship, DrugProgesterone-Binding GlobulinPregnanoloneMedroxyprogesteroneImmunohistochemistryCrystallography, X-RayEmbryo ImplantationMenstruationAnestrusProstaglandins FMedroxyprogesterone AcetateProtein Structure, TertiaryProestrusProtein ConformationEstrus SynchronizationMutagenesis, Site-DirectedSequence Homology, Amino AcidPregnanediolMutationStructure-Activity RelationshipLabor, ObstetricHormonesCell LineCholesterol Side-Chain Cleavage EnzymePregnanediones