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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 10 of 139 (0.102 seconds)| 1 |
Quaestionum phytochemicarum.Kerndt, Karl Huldreich Theodor. January 1900 (has links)
Inaug.-Diss.--Leipzig.
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Some aspects of uptake in plantsCohen, D. January 1960 (has links)
No description available.
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The calmodulin stimulated ATPase of Zea mays LBriars, Sally-Anne January 1989 (has links)
Maize coleoptile microsomal vesicles showing calmodulin-stimulated ATPase activity were isolated from 4.5 day old dark grown seedlings. Calmodulin-stiirmlated ATPase activity was maximal (8 nmoles min<sup>-1</sup> (mg protein)<sup>-1</sup>) at 0.35 μM, inhibited by orthovanadate (Iso=20 μM), and specific for ATP. Calmodulin affinity chromatography was used to purify this ATPase after solubilisation with Triton X-100. Calmodulin-stimulated ATPase activity was present in the purified fraction, maximal stimulation (340 nmoles min<sup>-1</sup> (mg protein)<sup>-1</sup>) occurring at 0.3 μM calmodulin. After reconstitution into asolectin liposomes, maximal calmodulinstimulated ATPase activity (500 nmoles min<sup>-1</sup> (mg protein)<sup>-1</sup>) occurred at 0.025 μM. Affinity chromatography using buffers containing asolectin produced true basal activities; maximal calmodulin stimulation was at 0.01 μM (100 nmoles min<sup>-1</sup> (mg protein)<sup>-1</sup>). These results suggest that a calmodulin-stimulated ATPase was purified from the microsomal fraction. Inclusion of protease inhibitors (PMSF, chymostatin) during purification and electrophoresis yielded a polypeptide of 140,000 M<sub>r</sub>, similar to the M<sub>r</sub> of erythrocyte calmodulin-stimulated, calcium-pumping ATPase (CSCPA). Polypeptides of M<sub>r</sub> 91,000, 77-69,000, 51,000, and 40,000 were also present. A monospecific polyclonal antibody raised against erythrocyte CSCPA recognised the 140,000 M<sub>r</sub> polypeptide from maize, giving strong evidence that maize cells may contain a polypeptide similar to erythrocyte CSCPA. The reaction mechanism of the proposed maize CSCPA was investigated. After purification in the presence of PMSF phosphorylation was present at 140,000 M<sub>r</sub>; this turned over rapidly, was sensitive to hydroxylamine, dependent on calcium, inhibited by lanthanum and stimulated by calmodulin. This was consistent with formation of an acyl-phosphate intermediate, indicating that maize CSCPA is a P-type ATPase, having a reaction mechanism similar to that of the erythrocyte CSCPA. A monoclonal antibody (EA6) was raised to maize CSCPA purified without PMSF; this antibody recognised intact maize CSCPA and inhibited calmodulin-stimulated ATPase activity in microsomal fractions. This antibody also bound to other polypeptides present in microsomal and purified fractions, permitting tentative identification of proteolysis products.
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The biosynthesis of waxes in plantsMatsuda, Kaoru, 1931- January 1962 (has links)
No description available.
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Effects of the environment on the thiocyanate ion (SCN̄ ) and isothiocyanate (RNCS) content of the hypocotyl-root region of radish Raphanus sativus.Neil, Lawrence J. January 1971 (has links)
No description available.
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A phytochemical investigation of the leaves from Erigeron philadelphicusWitcher, Michael David 05 1900 (has links)
No description available.
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Studies on the isolation and biotransformation of pyrrolizidine alkaloids and related bioactive compoundsBonetti, Sandra J. 12 1900 (has links)
No description available.
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Cations of plant tissue determination, organic anion relations, and constancy of equivalent total content /Goates, Rex James, January 1947 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1947. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Bibliography: leaves [i]-iv.
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Die chemiese samestelling van chloroplastgrana in verband met hulle struktuurBot, Geertruida Margaretha. January 1939 (has links)
Proefschrift--Leiden. / Bibliography: p. [62]-65.
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A study of the esterase activity of Aleurites fordiiWessel, Carl John, January 1941 (has links)
Thesis (Ph. D.)--Catholic University of America. / Description based on print version record. Bibliography: p. 67-72.
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