University of New Mexico
EVOLUTION AND CHARACTERIZATION OF A NEW REVERSIBLY PHOTOSWITCHABLE CHROMOPROTEIN
Abstract
dc:description.abstractWe report the molecular engineering and spectral characterization of a new reversibly photoswitchable chromoprotein, B11 a variant of thermostable green protein (TGP) that has been evolved for favorable solubility, thermostability, and enhanced crystallization properties. Its 2.5 \xc5 joint X-ray and neutron structure shows the location of critical hydrogen atoms, and reveals the position, orientation, and protonation states of solvent molecules in the chromophore and surrounding amino acids, which have not been ascertained to date from current X-ray structures. We report 1.65 \xc5 ground state and light-induced state X-ray crystal structures of B11, which differs from TGP by four amino acids and has a weak fluorescence in its ground state, and these structures are compared to the wild-type TGP structure. These structures will enhance future engineering of new and novel fluorescent proteins.
Degree
thesis:*- Name thesis:degree_name
- Nanoscience and Microsystems
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Nanoscience and Microsystems
- Year dc:date.available
- 2014
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Langan, Patricia
- Contributors dc:contributor
-
- Freyer, James
- Bradbury, Andrew
- Lidke, Diane
- Houston, Jessica
Subjects
dc:subject × 2Rights
- Language dc:language
- English
Identifiers
dc:identifier.*- OAI identifier oai:identifier
- oai:digitalrepository.unm.edu:nsms_etds-1010