Structural highlights 
| 1prc is a 4 chain structure with sequence from Blastochloris viridis. The October 2001 RCSB PDB Molecule of the Month feature on Photosystem I  by David S. Goodsell is 10.2210/rcsb_pdb/mom_2001_10. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. 
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| Method: | X-ray diffraction, Resolution 2.3Å | 
| Ligands: | , , , , , , , , , | 
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT | 
  Function 
CYCR_BLAVI The reaction center of purple bacteria contains a tightly bound cytochrome molecule which re-reduces the photo oxidized primary electron donor.[1] 
  Evolutionary Conservation 
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
  References 
- ↑ Chen IP, Mathis P, Koepke J, Michel H. Uphill electron transfer in the tetraheme cytochrome subunit of the Rhodopseudomonas viridis photosynthetic reaction center: evidence from site-directed mutagenesis. Biochemistry. 2000 Apr 4;39(13):3592-602. PMID:10736158