EXAFS structural study of FX, the low-potential Fe-S center in photosystem I.
作者信息
McDermott A E, Yachandra V K, Guiles R D, Sauer K, Klein M P, Parrett K G, Golbeck J H
机构信息
Laboratory of Chemical Biodynamics, Lawrence Berkeley Laboratory, University of California, Berkeley 94720.
出版信息
Biochemistry. 1989 Oct 3;28(20):8056-9. doi: 10.1021/bi00446a013.
PMID:2690931
Abstract
We present iron extended X-ray absorption fine structure (EXAFS) spectra of a photosystem I core preparation containing FX, the very low potential iron-sulfur cluster in photosystem I. The preparation lacks FA and FB. The amplitude of Fe-Fe backscattering in the EXAFS spectrum indicates that FX may be a [4Fe-4S] cluster and is not a [2Fe-2S] cluster or clusters.
摘要
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