Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/1B58 1B58: OLIGO-PEPTIDE BINDING PROTEIN (OPPA) COMPLEXED WITH KYK PROTEIN (LYS-TYR-LYS)PROTEIN (OLIGO-PEPTIDE BINDING PROTEIN)URANYL (VI) ION oligo peptide binding protein oppa