Polarized Range-Extended X-Ray Absorption Spectroscopy of Oriented Photosystem Ii Membranes in the S (1) State
Conference
·
· AIP Conf.Proc.882:346,2007
OSTI ID:953862
Detailed information about the orientation of particular Mn-Mn and Mn-Ca vectors in the oxygen evolving complex (OEC) of the Photosystem II in the S{sub 1} state provide a critical starting point for the analysis of the structural changes in the OEC along the catalytic S{sub i}-state cycle. The method of polarized range-extended EXAFS is an important technical development, that allows: (i) resolution of the 2.7 {angstrom} and 2.8 {angstrom} Mn-Mn interactions; (ii) resolution of 3.2 {angstrom} Mn-Mn and 3.4 {angstrom} Mn-Ca; (iii) determination of 2.7 {angstrom}, 2.8 {angstrom}, 3.2 {angstrom} Mn-Mn and 3.4 {angstrom} Mn-Ca vectors orientation relative to the membrane normal.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 953862
- Report Number(s):
- SLAC-REPRINT-2009-528
- Conference Information:
- Journal Name: AIP Conf.Proc.882:346,2007
- Country of Publication:
- United States
- Language:
- English
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