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Identification of a hydrogen bond in the Phe M197→Tyr mutant reaction center of the photosynthetic purple bacteriumRhodobacter sphaeroidesby X-ray crystallography and FTIR spectroscopy1
1999
FEBS Letters
In bacterial reaction centers the charge separation process across the photosynthetic membrane is predominantly driven by the excited state of the bacteriochlorophyll dimer (D). An X-ray structure analysis of the Phe M197C CTyr mutant reaction center from Rhodobacter sphaeroides at 2.7 A î resolution suggests the formation of a hydrogen bond as postulated by Wachtveitl et al. [Biochemistry 32, 12875^12886, 1993] between the Tyr M197 hydroxy group and one of the 2a-acetyl carbonyls of D. In
doi:10.1016/s0014-5793(99)01614-2
pmid:10601661
fatcat:i4litn57onetzca5yi3p6utcpi