ATTENTION: The software behind KU ScholarWorks is being upgraded to a new version. Starting July 15th, users will not be able to log in to the system, add items, nor make any changes until the new version is in place at the end of July. Searching for articles and opening files will continue to work while the system is being updated.
If you have any questions, please contact Marianne Reed at mreed@ku.edu .
Studies of the C-terminal Region of the Gamma Subunit of the Chloroplast ATP Synthase
dc.contributor.advisor | Richter, Mark L. | |
dc.contributor.author | He, Feng | |
dc.date.accessioned | 2008-08-05T02:49:27Z | |
dc.date.available | 2008-08-05T02:49:27Z | |
dc.date.issued | 2008-06-18 | |
dc.date.submitted | 2008 | |
dc.identifier.other | http://dissertations.umi.com/ku:2439 | |
dc.identifier.uri | http://hdl.handle.net/1808/4023 | |
dc.description.abstract | The C-terminal region of the γ subunit of the ATP synthase forms a "catch" with an anionic loop on one of the three β subunits within the catalytic αβ hexamer of the F1 segment. A series of single and multiple amino acid substitutions within this region of the chloroplast γ subunit were constructed utilizing site-directed mutagenesis. The mutations were reconstituted with α and β subunits into both hybrid and native enzymes. The kinetics analysis of the mutant enzymes suggests that the "catch" is not required for ATP hydrolysis but critical for proton coupling and ATP synthesis functions. Nucleotide binding and exchange studies using TNP-ADP showed that substituting three residues in the "catch" region simultaneously inhibited the nucleotide exchange at a non-catalytic site. The results have led to the new hypothesis that the catch residues perform the critical function of substrate (MgADP) recruitment and enzyme activation during photophosphorylation. | |
dc.format.extent | 165 pages | |
dc.language.iso | EN | |
dc.publisher | University of Kansas | |
dc.rights | This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author. | |
dc.subject | Chemistry | |
dc.subject | Biochemistry | |
dc.subject | Biophysics | |
dc.subject | Biology | |
dc.subject | Plant physiology | |
dc.subject | Atp synthase | |
dc.subject | Gamma subunit | |
dc.title | Studies of the C-terminal Region of the Gamma Subunit of the Chloroplast ATP Synthase | |
dc.type | Dissertation | |
dc.contributor.cmtemember | Richter, Mark | |
dc.contributor.cmtemember | Weaver, Robert | |
dc.contributor.cmtemember | Kuczera, Krzysztof | |
dc.contributor.cmtemember | De Guzman, Roberto N. | |
dc.contributor.cmtemember | Siahaan, Teruna | |
dc.thesis.degreeDiscipline | Molecular Biosciences | |
dc.thesis.degreeLevel | PH.D. | |
kusw.oastatus | na | |
kusw.oapolicy | This item does not meet KU Open Access policy criteria. | |
kusw.bibid | 6599443 | |
dc.rights.accessrights | openAccess |