Purification of nicotinamide adenine dinucleotide phosphate- specific glutamate dehydrogenase from Chlorella sorokiniana and partial characterization of its physical, kinetic, and immunological properties
<p>The ammonium inducible nicotinamide phosphate-specific glutamate dehydrogenase from Chlorella sorokiniana has been purified 260-fold to homogeneity. Depending on the technique used, the native enzyme appeared to have a molecular mass of 290,000 to 400,000 daltons and to be composed of subun...
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ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-439442021-05-05T05:40:17Z Purification of nicotinamide adenine dinucleotide phosphate- specific glutamate dehydrogenase from Chlorella sorokiniana and partial characterization of its physical, kinetic, and immunological properties Gronostajski, Richard Mark Biochemistry and Nutrition Schmidt, Robert R. Lightfoot, Donald R. Bunce, George Edwin LD5655.V855 1977.G747 Chlorella sorokiniana Dehydrogenases Isoenzymes <p>The ammonium inducible nicotinamide phosphate-specific glutamate dehydrogenase from Chlorella sorokiniana has been purified 260-fold to homogeneity. Depending on the technique used, the native enzyme appeared to have a molecular mass of 290,000 to 400,000 daltons and to be composed of subunits with an identical molecular weight of 58,000. Differences in the molecular weight of the native enzyme, as determined by sedimentation equilibrium, Sephadex G-200 gel filtration and gradient polyacrylamide gel electrophoresis, indicate that the native enzyme may be elliptical in shape.</p> <p> The amino acid composition of the enzyme is high in glycine, glutamate, and asparate. Moreover, the arginine to lysine ratio is similar to those measured in other glutamate dehydrogenases. The Nterminal amino acid is unavailable to dansylation. All six cysteines in the enzyme are in the free sulfhydryl form.</p> <p> The enzyme is very specific for the reduced and oxidized forms of nicotinamide adenine dinucleotide phosphate and has less than 0.5 percent of maximal activity, using the oxidized and reduced forms of nicotinamide adine dinucleotide. With low concentrations of the substrates, no cooperativity was seen; however severe substrate inhibition was observed with a-ketoglutarate. Antiserum produced to the subunits of the enzyme yielded a single precipitin band against purified enzyme in Ouchterlony double diffusion analysis. "Rocket" immunoelectrophoresis has been used to quantify the amount of antigen present in samples of the purified enzyme.</p> Master of Science 2014-03-14T21:41:25Z 2014-03-14T21:41:25Z 1977-08-05 2010-07-28 2010-07-28 2010-07-28 Thesis Text etd-07282010-020210 http://hdl.handle.net/10919/43944 http://scholar.lib.vt.edu/theses/available/etd-07282010-020210/ OCLC# 06741347 LD5655.V855_1977.G747.pdf In Copyright http://rightsstatements.org/vocab/InC/1.0/ 98 leaves BTD application/pdf application/pdf Virginia Tech |
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LD5655.V855 1977.G747 Chlorella sorokiniana Dehydrogenases Isoenzymes |
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LD5655.V855 1977.G747 Chlorella sorokiniana Dehydrogenases Isoenzymes Gronostajski, Richard Mark Purification of nicotinamide adenine dinucleotide phosphate- specific glutamate dehydrogenase from Chlorella sorokiniana and partial characterization of its physical, kinetic, and immunological properties |
description |
<p>The ammonium inducible nicotinamide phosphate-specific glutamate
dehydrogenase from Chlorella sorokiniana has been purified 260-fold to
homogeneity. Depending on the technique used, the native enzyme
appeared to have a molecular mass of 290,000 to 400,000 daltons and to
be composed of subunits with an identical molecular weight of 58,000.
Differences in the molecular weight of the native enzyme, as determined
by sedimentation equilibrium, Sephadex G-200 gel filtration and gradient
polyacrylamide gel electrophoresis, indicate that the native enzyme
may be elliptical in shape.</p>
<p>
The amino acid composition of the enzyme is high in glycine,
glutamate, and asparate. Moreover, the arginine to lysine ratio is
similar to those measured in other glutamate dehydrogenases. The Nterminal
amino acid is unavailable to dansylation. All six cysteines
in the enzyme are in the free sulfhydryl form.</p>
<p>
The enzyme is very specific for the reduced and oxidized forms of
nicotinamide adenine dinucleotide phosphate and has less than 0.5 percent
of maximal activity, using the oxidized and reduced forms of
nicotinamide adine dinucleotide. With low concentrations of the
substrates, no cooperativity was seen; however severe substrate inhibition
was observed with a-ketoglutarate. Antiserum produced to the
subunits of the enzyme yielded a single precipitin band against
purified enzyme in Ouchterlony double diffusion analysis. "Rocket"
immunoelectrophoresis has been used to quantify the amount of antigen
present in samples of the purified enzyme.</p> === Master of Science |
author2 |
Biochemistry and Nutrition |
author_facet |
Biochemistry and Nutrition Gronostajski, Richard Mark |
author |
Gronostajski, Richard Mark |
author_sort |
Gronostajski, Richard Mark |
title |
Purification of nicotinamide adenine dinucleotide phosphate- specific glutamate dehydrogenase from Chlorella sorokiniana and partial characterization of its physical, kinetic, and immunological properties |
title_short |
Purification of nicotinamide adenine dinucleotide phosphate- specific glutamate dehydrogenase from Chlorella sorokiniana and partial characterization of its physical, kinetic, and immunological properties |
title_full |
Purification of nicotinamide adenine dinucleotide phosphate- specific glutamate dehydrogenase from Chlorella sorokiniana and partial characterization of its physical, kinetic, and immunological properties |
title_fullStr |
Purification of nicotinamide adenine dinucleotide phosphate- specific glutamate dehydrogenase from Chlorella sorokiniana and partial characterization of its physical, kinetic, and immunological properties |
title_full_unstemmed |
Purification of nicotinamide adenine dinucleotide phosphate- specific glutamate dehydrogenase from Chlorella sorokiniana and partial characterization of its physical, kinetic, and immunological properties |
title_sort |
purification of nicotinamide adenine dinucleotide phosphate- specific glutamate dehydrogenase from chlorella sorokiniana and partial characterization of its physical, kinetic, and immunological properties |
publisher |
Virginia Tech |
publishDate |
2014 |
url |
http://hdl.handle.net/10919/43944 http://scholar.lib.vt.edu/theses/available/etd-07282010-020210/ |
work_keys_str_mv |
AT gronostajskirichardmark purificationofnicotinamideadeninedinucleotidephosphatespecificglutamatedehydrogenasefromchlorellasorokinianaandpartialcharacterizationofitsphysicalkineticandimmunologicalproperties |
_version_ |
1719402329618251776 |