Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/6KOL 6KOL: Crystal structure of auracyanin from photosynthetic bacterium Roseiflexus castenholzii Blue (Type 1) copper domain proteinCHLORIDE IONCOPPER (II) ION crystal structure photosynthetic bacterium https://www.ncbi.nlm.nih.gov/protein/1OV8_A Chain A, Auracyanin B - Protein - NCBI b protein chain ncbi