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Proteomics

Random mutagenesis affects B. subtilis glutamate dehydrogenase thermostability

Published in Gene Therapy Weekly, January 5th, 2006

A study from Japan has chronicled the molecular properties and enhancement of thermostability by random mutagenesis of glutamate dehydrogenase from Bacillus subtilis (Bs-GluDH).

"Bs-GluDH was cloned, and expressed at considerable magnitude in Escherichia coli," wrote M.I.H. Khan and colleagues, Shimane University.

"The recombinant Bs-GluDH was purified to homogeneity and has been determined to have a hexameric structure (Mr 270 kDa) with strict specificity for 2-oxoglutarate and L-glutamate, requiring NADH and NAD+ as cofactors respectively."

The researchers wrote, "The enzyme showed low thermostability...

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