Tryptophansynthaseisanenzymethatcatalyzesthefinaltwostepsinthebiosynthesisoftryptophan.ItiscommonlyfoundinEubacteria,Archaebacteria,Protista,Fungi,andPlantae,butisabsentfromanimalssuchashumans.Tryptophansynthasetypicallyexistsasanα-ββ-αcomplex.ThealphasubunitisresponsIBLeforthealdolcleavageofindoleglycerolphosphatetoindoleandglyceraldehyde3-phosphate:L-serine+1-C-(indol-3-yl)glycerol3-phosphate=L-tryptophan+D-glyceraldehyde3-phosphate+H2O.Thebetasubunitscatalyzetheirreversiblecondensationofindoleandserinetoformtryptophaninapyridoxalphosphate(PLP)dependentreaction.Theirassemblyintoacomplexleadstostructuralchangesinbothsubunitsresultinginreciprocalactivation.
Source | E.coli |
Description | RecombinantE.coliTryptophansynthasebetachainisproducedbyourE.coliexpressionsystemandthetargetgeneencodingThr2-Ile397isexpressedwitha6HistagattheN-terminus. |
Names | Tryptophansynthasebetachain,trpB |
Accession# | P0A879 |
Formulation | Lyophilizedfroma0.2μmfilteredsolutionofPBS,pH7.4. |
Shipping | Theproductisshippedatambienttemperature. |
Reconstitution | Alwayscentrifugetubesbeforeopening.Donotmixbyvortexorpipetting. |
Storage | Lyophilizedproteinshouldbestoredat<-20°C,thoughstableatroomtemperaturefor3weeks. |
Purity | Greaterthan95%asdeterminedbyreducingSDS-PAGE. |
Endotoxin | Lessthan0.1ng/µg(1IEU/µg)asdeterminedbyLALtest. |
AminoAcidSequence | MHHHHHHTTLLNPYFGEFGGMYVPQILMPALRQLEEAFVSAQKDPEFQAQFNDLLKNYAGRPTALTKCQNITAGTNTTLYLKREDLLHGGAHKTNQVLGQALLAKRMGKTEIIAETGAGQHGVASALASALLGLKCRIYMGAKDVERQSPNVFRMRLMGAEVIPVHSGSATLKDACNEALRDWSGSYETAHYMLGTAAGPHPYPTIVREFQRMIGEETKAQILEREGRLPDAVIACVGGGSNAIGMFADFINETNVGLIGVEPGGHGIETGEHGAPLKHGRVGIYFGMKAPMMQTEDGQIEESYSISAGLDFPSVGPQHAYLNSTGRADYVSITDDEALEAFKTLCLHEGIIPALESSHALAHALKMMRENPDKEQLLVVNLSGRGDKDIFTVHDILKARGEI |
