FIG. 4. Structural comparison between the LHCI-PSI
supercomplex and PSI monomer. a, typical top view class average
projection of the LHCI-PSI supercomplex. b, detailed top view
of the LHCI antenna domain with the density attributed to the
PSI core overlaid with a surface-rendered spacefill representation
of the amino acids from the 2.5 Å resolved cyanobacterial PSI
monomer structure (2). c, typical top view projection of the
C. reinhardtii PSI monomer obtained from the F2 fraction. d,
the green surface-rendered cyanobacterial PSI monomer view overlaid
onto the C. reinhardtii PSI monomer from c. Circled in red is
the PsaL subunit region of 1JB0.pdb. Bar represents 10 nm.
