Science Advances

Supplementary Materials

The PDFset includes:

  • Fig. S1. Isolation and characterization of trimeric WL-PSI and FRL-PSI and dimeric FRL-PSII complexes from F. thermalis PCC 7521.
  • Fig. S2. Resolution of the FRL-PSI density map.
  • Fig. S3. Sequence alignments of PSI subunit polypeptides.
  • Fig. S4. Reversed-phase HPLC elution profiles identifying various pigments.
  • Fig. S5. LHG 3 and Chl A18 site conservation in all type 1 reaction center structures excluding the FRL-PSI structure presented here.
  • Fig. S6. Details of A20/A21 and A33 Chls.
  • Fig. S7. PA H bonding and possible Chl f A38.
  • Table S1. Cryo-EM data collection, refinement, and validation statistics for FRL-PSI.
  • Table S2. Sequence identity matrices of homologous PSI subunit polypeptides from F. thermalis and T. elongatus.
  • Table S3. Superposition RMSD comparing T. elongatus PSI (PDB ID, 1JB0) subunits to F. thermalis FRL-PSI subunits (PDB ID, 6PNJ).
  • Legends for data S1 and S2
  • References (55, 56)

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Other Supplementary Material for this manuscript includes the following:

  • Data S1 (.pdf format). (JPred4 output).
  • Data S2 (.pdf format). (caption, data separate). Final PDB verification report for 6PNJ.

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