Sheanell Burton

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Mutation screening of the major autosomal dominant polycystic kidney disease (ADPKD) locus, PKD1, has proved difficult because of the large transcript and complex reiterated gene region. We have developed methods, employing long polymerase chain reaction (PCR) and specific reverse transcription-PCR, to amplify all of the PKD1 coding area. The gene was(More)
The genes for the large and small subunits of ribulose bisphosphate carboxylase/oxygenase (Rubisco) from Anacystis nidulans have been expressed in Escherichia coli under the control of the lac promoter to produce active enzyme. The enzyme can be purified from the cells to yield up to 200 mg Rubisco/l cultured bacteria, and is indistinguishable from the(More)
Human serum albumin has been constitutively expressed in a Saccharomyces cerevisiae brewing yeast. After cell growth and disruption the product was associated with the insoluble fraction and represented approximately 1% of total cell protein. After the cell debris was extensively washed, the albumin was solubilized with 8 M urea and 28 mM 2-mercaptoethanol(More)
The conditions for refolding reduced and denatured human serum albumin (HSA) were investigated with a view to maximising the yield of native monomeric albumin. Refolding by dialysis was found to be preferable to dilution as a means of chaotrope (urea) and reductant (2-mercaptoethanol) removal. Dialysis of denatured HSA solutions containing 4-8 M urea and 14(More)
Penicillin amidase was coupled to a periodate-oxidised dextran by reductive alkylation in the presence of sodium cyanoborohydride. A loss of activity (25%) was observed but the conjugate enzyme dextran was more thermostable than the native enzyme. Native and dextran-conjugated penicillin amidase were immobilised on amino activated silica (Promaxon,(More)
Grape pomace is a potential source of natural antioxidant and antimicrobial agents. Phenolic compounds, antioxidant, and antibacterial properties of pomace extracts from four Virginia-grown grape varieties were investigated. White grape pomaces had higher (P < 0.05) solvent extraction yield than red varieties. Concentrations of total phenolic (TPC), total(More)
Isolation of Ribulose-P2 carboxylase/oxygenase and its purification to homogeneity often results in losses of enzyme activity. Attempts were made to decrease these losses by adding fructose-P2, SO ] , Pi or PPi to the buffers used during early stages of the extraction and purification of the enzyme. Yield and final specific activity were not improved, but(More)
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