Investigating quinone function in bacterial photosynthetic reaction centers.

Title: Investigating quinone function in bacterial photosynthetic reaction centers.
Identifier: AAI3231999
identifier: 3231999
Creator: Zhang, Xinyu.
Contributor: Adviser: Marilyn R. Gunner
Date: 2006
Language: English
Publisher: City University of New York.
Subject: Chemistry, Physical
Abstract: Bacterial Reaction Centers (RCs) Functions and electron transfer kinetics were measured with the different non-native quinone at the QA and QB sites. A new low potential quinone 2-methyl,3-dimethylamino-1,4-Naphthoquinone (dMA-NQ) has been synthesized. The quinone was added as a low potential electron donor in the RCs and transfer electron to 1,4-Naphthoquinone (NQ) at Q B while increasing driving force between QA and QB sites. The kinetics between those non-native quinones is detectable and characterized. The quinone binding affinity at QB site may be 10-20 times weaker than those at QA site up to the size of 2-methyl-1,4-Naphthoquinone. The temperature dependence of the back reaction with dMA-NQ as QA and NQ as QB, the upper level for the energy of NQB is estimated.
Type: dissertation
Source: PQT Legacy CUNY.xlsx
degree: Ph.D.

Media: Investigating quinone function in bacterial photosynthetic reaction centers.