Search results for "Maltose-Binding Proteins"

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Expression of Active Streptolysin O in Escherichia coli as a Maltose-Binding-Protein-Streptolysin-O Fusion Protein. The N-Terminal 70 Amino Acids are…

1996

Streptolysin 0 (SLO) is the prototype of a family of cytolysins that consists of proteins which bind to cholesterol and form very large transmembrane pores. Structure/function studies on the pore-forming cytolysin SLO have been complicated by the proteolytic inactivation of a substantial portion of recombinant SLO (rSLO) expressed in Escherichia coli. To overcome this problem, translational fusions between the E. coli maltose-binding protein (MBP) gene and SLO were constructed, using the vectors pMAL-p2 and pMAL-c2. MBP-SLO fusion proteins were degraded if secreted into the E. coli periplasm, but intact, soluble MBP-SLO fusion proteins were produced at high levels in the cytoplasm. Active S…

ErythrocytesMonosaccharide Transport Proteinsgenetic structuresProtein ConformationStreptococcus pyogenesRecombinant Fusion ProteinsMolecular Sequence Datamedicine.disease_causeHemolysisBiochemistryMaltose-Binding ProteinsStructure-Activity RelationshipMaltose-binding proteinProtein structureBacterial ProteinsEscherichia colimedicineHumansCloning MolecularEscherichia coliSequence DeletionPore-forming toxinBase SequencebiologyEscherichia coli ProteinsFluoresceinsFusion proteineye diseasesTransmembrane proteinBiochemistryLiposomesStreptolysinsbiology.proteinATP-Binding Cassette TransportersStreptolysinsense organsCytolysinCarrier ProteinsSequence AnalysisEuropean Journal of Biochemistry
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Isolation of carcinoembryonic antigen N-terminal domains (N-A1) from soluble aggregates

2011

Abstract Carcinoembryonic antigen (CEA) was identified as a prominent tumor-associated antigen in human colorectal cancer and it is still intensively investigated. However, its physiological role remains unclear. The CEA molecule is composed of seven highly hydrophobic, immunoglobulin-like domains, six of which contain a single disulphide bridge. The production of recombinant protein containing Ig-like domains in bacterial expression systems often results in partial degradation or insolubility due to aggregation hampering the analysis of their native structure and function. Here, we present a new method of expression and purification of CEA N-terminal domains (N-A1) fused to MBP in Escheric…

Guanidinium chlorideCircular dichroismRecombinant Fusion Proteinsmedicine.disease_causeMaltose-Binding Proteinslaw.inventionchemistry.chemical_compoundCarcinoembryonic antigenlawProtein purificationEscherichia colimedicineTEV proteaseHumansDisulfidesEscherichia coliGuanidinebiologyProtein StabilityCircular DichroismFusion proteinCarcinoembryonic AntigenProtein Structure TertiarySolubilitychemistryBiochemistryChromatography GelRecombinant DNAbiology.proteinElectrophoresis Polyacrylamide GelBiotechnologyProtein Expression and Purification
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