Primary Quinone (QA) Binding Site of Bacterial Photosynthetic Reaction Centers:  Mutations at Residue M265 Probed by FTIR Spectroscopy

In the primary quinone (QA) binding site of Rb. sphaeroides reaction centers (RCs), isoleucine M265 is in extensive van der Waals contact with the ubiquinone headgroup. Substitution of threonine or serine for this residue (mutants M265IT and M265IS), but not valine (mutant M265IV), lowers the redox...

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Veröffentlicht in:	Biochemistry (Easton) 2003-04, Vol.42 (14), p.4064-4074
Hauptverfasser:	Wells, Todd A, Takahashi, Eiji, Wraight, Colin A
Format:	Artikel
Sprache:	eng
Schlagworte:	Benzoquinones - metabolism Binding Sites Models, Molecular Mutagenesis Photosynthetic Reaction Center Complex Proteins - chemistry Photosynthetic Reaction Center Complex Proteins - genetics Photosynthetic Reaction Center Complex Proteins - metabolism Spectroscopy, Fourier Transform Infrared
Online-Zugang:	Volltext
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