Fig. 3: Structure and interactions of Rba. sphaeroides PufX.
From: A previously unrecognized membrane protein in the Rhodobacter sphaeroides LH1-RC photocomplex
a Structure and density map (3.0σ) of PufX with orientation toward the presumed membrane plane. b Close contacts (<3.5 Å, dashed lines) between the PufX N-terminal region (transparent orange) and an LH1 α-polypeptide (chain ID: A, transparent green). c Close contacts (<3.5 Å, dashed lines) between the PufX C-terminal domain (transparent orange) and the RC L-subunit (transparent wheat). d Primary sequence of the full-length PufX in Rba. sphaeroides IL106. Sequence for the expressed PufX is shown by larger bold fonts. Membrane-spanning residues are underlined. The Glu58 and Pro61 (blue fonts) are both replaced by Gln in the type strain 2.4.1.
