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    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="enta_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_AccruedLiabilitiesManufacturing" name="AccruedLiabilitiesManufacturing" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="enta_AccruedResearchAndDevelopmentExpensesCurrent" name="AccruedResearchAndDevelopmentExpensesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="enta_CapitalExpenses" name="CapitalExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="enta_CashCashEquivalentsShortTermAndLongTermMarketableSecurities" name="CashCashEquivalentsShortTermAndLongTermMarketableSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="enta_CashConsiderationReceivedUnderCollaborationFromSaleOfPreferredStockResearchFundingPaymentsMilestonePaymentsAndRoyalties" name="CashConsiderationReceivedUnderCollaborationFromSaleOfPreferredStockResearchFundingPaymentsMilestonePaymentsAndRoyalties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="enta_EstimatedMinimumLeasePayments" name="EstimatedMinimumLeasePayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="enta_FairValueMeasurementsInterTransfersBetweenLevels" name="FairValueMeasurementsInterTransfersBetweenLevels" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="enta_IncreaseDecreaseInOperatingLeaseRightOfUseAssets" name="IncreaseDecreaseInOperatingLeaseRightOfUseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="enta_IncreaseDecreaseInRightOfUseAssetAndLeaseLiability" name="IncreaseDecreaseInRightOfUseAssetAndLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="enta_LeaseExpirationPeriod" name="LeaseExpirationPeriod" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="enta_LesseeOperatingLeaseExtendPeriod" name="LesseeOperatingLeaseExtendPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="enta_MarketableSecuritiesMaturityPeriod" name="MarketableSecuritiesMaturityPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="enta_MinimumLeasePayments" name="MinimumLeasePayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="enta_NonConvertiblePreferredStockLiabilities" name="NonConvertiblePreferredStockLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="enta_PremiumOnMarketableSecurities" name="PremiumOnMarketableSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="enta_PrepaidLeaseDepositExpenseNoncurrent" name="PrepaidLeaseDepositExpenseNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="enta_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTargetSharesEarnedMaximumLimit" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTargetSharesEarnedMaximumLimit" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="enta_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTargetSharesEarnedMinimumLimit" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTargetSharesEarnedMinimumLimit" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="enta_ShareBasedCompensationArrangementByShareBasedPaymentAwardVested" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVested" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="enta_TenantImprovementAllowance" name="TenantImprovementAllowance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="enta_AbbVieMember" name="AbbVieMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_CorporateBondsAndUSTreasuryNotesMember" name="CorporateBondsAndUSTreasuryNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_FirstLeaseMember" name="FirstLeaseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_FiveHundredArsenalStreetWatertownMassachusettsMember" name="FiveHundredArsenalStreetWatertownMassachusettsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_FourHundredTalcottAvenueWatertownMassachusettsMember" name="FourHundredTalcottAvenueWatertownMassachusettsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_LongTermMarketableSecuritiesMember" name="LongTermMarketableSecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_MeasurementInputProbabilitiesOfPayoutMember" name="MeasurementInputProbabilitiesOfPayoutMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_PerformanceShareUnitsAndRelativeStockholderReturnUnitsMember" name="PerformanceShareUnitsAndRelativeStockholderReturnUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_RelativeStockholderReturnUnitsRTSRUsMember" name="RelativeStockholderReturnUnitsRTSRUsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_SeriesOneNonConvertiblePreferredStockMember" name="SeriesOneNonConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_ShortTermMarketableSecuritiesMember" name="ShortTermMarketableSecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_UnvestedPerformanceSharesMember" name="UnvestedPerformanceSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_UnvestedRelativeStockholderReturnUnitsRTSRUsMember" name="UnvestedRelativeStockholderReturnUnitsRTSRUsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_UnvestedRestrictedStockMember" name="UnvestedRestrictedStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="enta_DisclosureOfNonConvertiblePreferredStockTextBlock" name="DisclosureOfNonConvertiblePreferredStockTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
