PMID:7035170

From EcoliWiki
Jump to: navigation, search
Citation

Hayzer, DJ and Leisinger, T (1982) Proline biosynthesis in Escherichia coli. Purification and characterisation of glutamate-semialdehyde dehydrogenase. Eur. J. Biochem. 121:561-5

Abstract

Glutamate-semialdehyde dehydrogenase, catalysing the reduction in vivo of gamma-glutamyl phosphate to glutamate 5-semialdehyde in the pathway of proline biosynthesis in Escherichia coli, has been purified to homogeneity. High initial levels of the enzyme were achieved by using a multicopy ColEl-pro A, B hybrid plasmid. The protein has a molecular weight of 1.89 X 10(5) and consists of four identical subunits of molecular weight 4.7 X 10(4) each. The pH optimum is 7.0 and the protein is stable for at least 10 min between pH 6.0-9.0 and for long periods at pH 7.0 It is rapidly inactivated at temperatures greater than 50 degrees C. The enzyme is very sensitive to inhibition by p-chloro-mercuribenzoate, copper and nickel ions.

Links

PubMed

Keywords

Aldehyde Oxidoreductases/antagonists & inhibitors; Aldehyde Oxidoreductases/isolation & purification; Chromatography, DEAE-Cellulose; Chromatography, Gel; Electrophoresis, Polyacrylamide Gel; Escherichia coli/enzymology; Glutamate-5-Semialdehyde Dehydrogenase; Hydrogen-Ion Concentration; Macromolecular Substances; Molecular Weight; Proline/biosynthesis; Temperature

Significance

You can help EcoliWiki by summarizing why this paper is useful

Useful Materials and Methods

You can help Ecoliwiki by describing the useful materials (strains, plasmids, antibodies, etc) described in this paper.

Annotations

<annotationlinks/>

EcoliWiki Links

Add links to pages that link here (e.g. gene, product, method pages)

References

See Help:References for how to manage references in EcoliWiki.