Abstract:
:The interaction of water oxidising photosystem II preparations with the aqueous environment has been investigated using electron spin echo envelope modulation spectroscopy in the presence of 2H(2)O. The spectra show interaction of 2H of 2H(2)O with the preparation in the S(2) state. The component interacting with water decays during 1-4 weeks storage at 77 K. No interaction of water with the classical multiline S(2) Mn signal, which is more stable on storage at 77 K, was detected. The results show that a component of the water oxidation complex, possibly involving the Mn centre, is accessible to water and may be the water binding site for photosynthetic water oxidation.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Evans MC,Rich AM,Nugent JHdoi
10.1016/s0014-5793(00)01742-7keywords:
subject
Has Abstractpub_date
2000-07-14 00:00:00pages
113-7issue
1-2eissn
0014-5793issn
1873-3468pii
S0014-5793(00)01742-7journal_volume
477pub_type
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