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Cloning of the Full-Length cDNA of Porcine Antithrombin III and Comparison with its Human Homolog

机译:猪抗凝血酶III全长cDNA的克隆及其与人类同源物的比较

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ThecharacterizationofporcineantithrombinIII(ATIII)#8212;ahighlypowerfulanticoagulant#8212;isessentialforusingporcineliverinxenotransplantationapplications.TheobjectiveofthisstudywastoclarifythefunctionsofporcineATIIIthroughcomparisonwithhumanATIII.WeclonedporcineATIIIandcompareditsimportantfunctionalsiteswiththoseofhumanATIII.Thefull-lengthcDNAofporcineATIIIwasclonedbyscreeningaporcinelivercDNAlibrary,andtheATIIIactivitiesof23pigsweredetermined.Thefull-lengthcDNAofporcineATIIIspanned1498bpandencoded463aminoacids.PorcineATIIIshared87.67%nucleotideidentityand89.06%aminoacididentitywithhumanATIII.CompleteidentitywasfoundatactivecenterArg393#8211;Ser394,andremarkablyhighsimilaritieswerefoundat2criticalheparin-bindingsites(residues41through49and114through156)andinsomekeyresiduesinvolvedinheparinbinding.AnATIIIassayfoundnosignificantdifferencebetweenporcineandhumanplasma.ThehighlevelofsimilaritybetweenporcineATIIIandhumanATIIIsuggeststhatporcineATIIIwillfunctioninamannersimilartohumanATIIIinxenotransplantation.
机译:ThecharacterizationofporcineantithrombinIII(ATIII)#8212; ahighlypowerfulanticoagulant#8212; isessentialforusingporcineliverinxenotransplantationapplications.TheobjectiveofthisstudywastoclarifythefunctionsofporcineATIIIthroughcomparisonwithhumanATIII.WeclonedporcineATIIIandcompareditsimportantfunctionalsiteswiththoseofhumanATIII.Thefull-lengthcDNAofporcineATIIIwasclonedbyscreeningaporcinelivercDNAlibrary,andtheATIIIactivitiesof23pigsweredetermined.Thefull-lengthcDNAofporcineATIIIspanned1498bpandencoded463aminoacids.PorcineATIIIshared87.67%nucleotideidentityand89.06%aminoacididentitywithhumanATIII.CompleteidentitywasfoundatactivecenterArg393#8211; Ser394,andremarkablyhighsimilaritieswerefoundat2criticalheparin-bindingsites(residues41through49and114through156)andinsomekeyresiduesinvolvedinheparinbinding猪与人血浆之间没有相似性的ATIII分析。猪ATIII与人ATIII之间的高度相似性表明,猪ATIII的作用与人ATIII相似异种移植。

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