Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/2E80
Cytochrome c-552ACETATE IONCALCIUM IONNITRITE IONPROTOPORPHYRIN IX CONTAINING FEYTTRIUM (III) ION
cytochrome cnitrite reductasewolinellabound
https://www.ncbi.nlm.nih.gov/Structure/pdb/3OIR
SULFATE TRANSPORTER SULFATE TRANSPORTER FAMILY PROTEINChloride IonFormic Acid
crystal structuresulfate transporterfamilyproteinwolinella