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bgsu1236028531.pdf (1.79 MB)
ETD Abstract Container
Abstract Header
De Novo Design of Metalloproteins with Variant Hydrophobic Cores
Author Info
Xie, Fei
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1236028531
Abstract Details
Year and Degree
2009, Doctor of Philosophy (Ph.D.), Bowling Green State University, Photochemical Sciences.
Abstract
This work studies a series of related de novo designed luminescent Cu(I) metalloproteins having different cysteine-based metal binding sites within the hydrophobic cores. The peptide sequences are based on the (Ia-Eb-Ac-Ld-Ee-Gf-Kg)n heptad repeat which is known to form two-stranded coiled coil in aqueous solution. The metal-binding cysteine residues are placed at the hydrophobic a and/or d positions in the middle of the peptide sequences. With subtle changes of the metal-binding site, the resultant Cu(I) metalloproteins give distinctly different structures and properties. The peptide C16C19GGY exists as a random coil and the Cu(I)-C16C19GGY metalloprotein exists as a 4-helix bundle (Cu4P4, P = peptide) which gives strong room temperature emission at 600 nm. The peptide C12C16GGY exists as a random coil and the Cu(I)-C12C16GGY metalloprotein exists as a 4-helix bundle (Cu4P4) which gives strong room temperature emission at 575 nm. The peptide C12C16C19GGY exists as a random coil and the Cu(I)-C12C16C19GGY metalloprotein exists as a 4-helix bundle (Cu8P4) which gives strong room temperature emission at 605 nm. The peptide C12C19GGY exists as a random coil and the Cu(I)-C12C19GGY metalloprotein also exists as a random coil (Cu4P4) which gives strong room temperature emission at 600 nm. The peptide C16GGY, C19GGY exist as two-stranded coiled-coils and the Cu(I)-C16GGY, Cu(I)-C19GGY metalloproteins exist as 4-helix bundles (Cu3P4) which gives very weak room temperature emission at 603 nm and 630 nm respectively.
Committee
Michael Y. Ogawa, PhD (Advisor)
George S. Bullerjahn, PhD (Committee Member)
Thomas H. Kinstle, PhD (Committee Member)
Moira van Staaden, PhD (Committee Member)
Pages
132 p.
Subject Headings
Chemistry
Keywords
De novo
;
Metalloprotein
;
Copper
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Citations
Xie, F. (2009).
De Novo Design of Metalloproteins with Variant Hydrophobic Cores
[Doctoral dissertation, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1236028531
APA Style (7th edition)
Xie, Fei.
De Novo Design of Metalloproteins with Variant Hydrophobic Cores.
2009. Bowling Green State University, Doctoral dissertation.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1236028531.
MLA Style (8th edition)
Xie, Fei. "De Novo Design of Metalloproteins with Variant Hydrophobic Cores." Doctoral dissertation, Bowling Green State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1236028531
Chicago Manual of Style (17th edition)
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Document number:
bgsu1236028531
Download Count:
787
Copyright Info
© 2009, all rights reserved.
This open access ETD is published by Bowling Green State University and OhioLINK.