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Whitesolid
2079-00-7
C17H26N8O5
422.4
BlasticidinSinhibitsproteinsynthesisinprokaryoticandeukaryoticcellsbybindingtotheribosomalP-sitewhichstrengthenstRNAbindingandslowsdownandpreventssubsequentpeptidesynthesis. ResistancetoblasticidinSisconferredbybsr,BSD,andblsresistancegenesisolatedfromBacilluscereusK55-S1,Aspergillusterreus,andStreptoverticillumspp,respectively. Thebsrresistancegeneisa420bpfragmentandencodesa15kDablasticidinSdeaminasewhichcatalyzesthereactionofblasticidinStodeaminohydroxyblasticidinS.DeaminohydroxyblasticidinSisaBIOLOGicallyinactivederivativeofblasticidinSanddoesnotinteractwithorinhibitprokaryoticoreukaryoticribosomes. Thebsdresistancegeneisa393bpfragmentandalsoencodesablasticidinSdeaminaseenzymewhichcatalyzesasimilarreactiontotheBSRdeaminase.AstudybyKimuraetal.foundthetransfectionfrequencywithbsdtobe80XgreaterthanwithbsrwhenusingFM3Acells. Theblsgeneresistancegeneencodesanacetyltransferasewhichinteractswithacetyl-coenzymeAandpreventsblasticidinSfrominhibitingproteinsynthesis. -20°C BlasticidinSHClisbiologicallyactiveagainstsusceptIBLemammalianandprokaryoticcells. WhitesolidMechanismsofresistance
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