Phosphoglycolate phosphatase (EC 3.1.3.18), isolated from maize leaf bundle sheath, was purified 200-fold to a specific activity of about 99 gmol mg-1 protein, rain -a. The purification procedure included Sephadex G-75 filtration, and diethylaminoethyl-cellulose and Phospho-Ultrogel A6R chromatograp
Phosphoglycolate phosphatase: purification and preparation of antibodies
β Scribed by Faith C. Belanger; William L. Ogren
- Publisher
- Springer
- Year
- 1987
- Tongue
- English
- Weight
- 803 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0166-8595
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β¦ Synopsis
Phosphoglycolate phosphatase was partially purified from leaves of Nicotiana rustica using ion exchange and chromatofocusing columns. The native molecular weight of the enzyme was determined to be about 58 kD from Ferguson plots, with a subunit size of about 32 kD. The native enzyme is thus likely to be a dimer. A polyclonal antibody prepared against the LDS denatured enzyme cross reacted with proteins from Nicotiana tabacum, Glycine max, Spinacea oleracea and Arabidopsis thaniana. There was little or no reaction with an Arabidopsis mutant lacking phosphoglycolate ph0sphatase activity, indicating a much reduced level of phosphoglycolate phosphatase protein in the mutant.
π SIMILAR VOLUMES
A method for the synthesis of [3ZP]phosphoglycolate is described; this substrate is used to assay phosphoglycolate phosphatase activity. This enzyme activity was demonstrated in several rat tissues. In human red cells, activity of the enzyme was age dependent. A correlation was found between 2,3-dip
Maize root membranes were extracted and the solubilized proteins were affinity-purified using an ABA-BSA-Sepharose 4B matrix. The retained proteins were eluted with 4 M urea or M ABA. ABA could elute the binding proteins but other phytohormones, such as M A or GAS, could not. ABA binding activity wa