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  <xs:element id="bku_ExtendedMaturityAndPaymentDeferralMember" abstract="true" name="ExtendedMaturityAndPaymentDeferralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bku_TermExtensionAndPaymentDeferralMember" abstract="true" name="TermExtensionAndPaymentDeferralMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bku_OtherLoanModificationMember" abstract="true" name="OtherLoanModificationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bku_FinancingReceivableModifiedWeightedAveragePaymentDeferral" abstract="false" name="FinancingReceivableModifiedWeightedAveragePaymentDeferral" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bku_InterestRateCollarMember" abstract="true" name="InterestRateCollarMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bku_PayFixedForwardStartingInterestRateSwapsMember" abstract="true" name="PayFixedForwardStartingInterestRateSwapsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bku_PayvariableinterestrateswapsMember" abstract="true" name="PayvariableinterestrateswapsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bku_InterestRateCapsSoldMember" abstract="true" name="InterestRateCapsSoldMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bku_RiskParticipationAgreementPurchasedDerivativeNotionalAmount" abstract="false" name="RiskParticipationAgreementPurchasedDerivativeNotionalAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_RiskParticipationAgreementPurchasedDerivativeAssetFV" abstract="false" name="RiskParticipationAgreementPurchasedDerivativeAssetFV" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_RiskParticipationAgreementPurchasedDerivativeLiabilityFV" abstract="false" name="RiskParticipationAgreementPurchasedDerivativeLiabilityFV" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_RiskParticipationAgreementSoldDerivativeNotionalAmount" abstract="false" name="RiskParticipationAgreementSoldDerivativeNotionalAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_RiskParticipationAgreementSoldDerivativeAssetFV" abstract="false" name="RiskParticipationAgreementSoldDerivativeAssetFV" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_RiskParticipationAgreementSoldDerivativeLiabilityFV" abstract="false" name="RiskParticipationAgreementSoldDerivativeLiabilityFV" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_GrossAmountsRecognizedDerivativeAssetsAndLiabilities" abstract="false" name="GrossAmountsRecognizedDerivativeAssetsAndLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_DerivativeAssetLiabilityCollateralOffset" abstract="false" name="DerivativeAssetLiabilityCollateralOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_DerivativeAssetLiabilityFairValueAmountNotOffsetAgainstCollateral" abstract="false" name="DerivativeAssetLiabilityFairValueAmountNotOffsetAgainstCollateral" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_DerivativeAssetLiabilityFairValueGrossLiabilityAsset" abstract="false" name="DerivativeAssetLiabilityFairValueGrossLiabilityAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_DerivativeAssetLiabilityFairValueOfCollateral" abstract="false" name="DerivativeAssetLiabilityFairValueOfCollateral" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_DerivativeAssetNetAmountNotOffset" abstract="false" name="DerivativeAssetNetAmountNotOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_DerivativeLiabilityNetAmountNotOffset" abstract="false" name="DerivativeLiabilityNetAmountNotOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_ImpairedLoansMember" abstract="true" name="ImpairedLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bku_OREOandRepossessedAssetsMember" abstract="true" name="OREOandRepossessedAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bku_LendingrelatedcommitmentsTable" abstract="true" name="LendingrelatedcommitmentsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bku_LendingrelatedcommitmentsLineItems" abstract="true" name="LendingrelatedcommitmentsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bku_NoninterestBearingDepositLiabilitiesDomesticAverageBalance" abstract="false" name="NoninterestBearingDepositLiabilitiesDomesticAverageBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_NonInterestBearingAverageRateInPercent" abstract="false" name="NonInterestBearingAverageRateInPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bku_InterestBearingDepositLiabilitiesDomesticAverageBalance" abstract="false" name="InterestBearingDepositLiabilitiesDomesticAverageBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_InterestBearingAverageRateInPercent" abstract="false" name="InterestBearingAverageRateInPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bku_SavingsAndMoneyMarketAverageBalance" abstract="false" name="SavingsAndMoneyMarketAverageBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_AverageRateDomesticDepositSavingsAndMoneyMarket" abstract="false" name="AverageRateDomesticDepositSavingsAndMoneyMarket" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bku_TimeDepositsAverageBalance" abstract="false" name="TimeDepositsAverageBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_AverageRateDomesticDepositTimeDeposit" abstract="false" name="AverageRateDomesticDepositTimeDeposit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bku_DepositsAverageBalance" abstract="false" name="DepositsAverageBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_AverageRateDomesticDeposits" abstract="false" name="AverageRateDomesticDeposits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bku_InterestExpenseMoneyMarketAndSavingsDeposits" abstract="false" name="InterestExpenseMoneyMarketAndSavingsDeposits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bku_Publicfundsdepositsincludedindeposits" abstract="false" name="Publicfundsdepositsincludedindeposits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
