https://www.ncbi.nlm.nih.gov/Structure/pdb/5CVT
5CVT: Structure of a single tryptophan mutant of Acetobacter aceti PurE containing...
N5-carboxyaminoimidazole ribonucleotide mutase2,5,8,11-TETRAOXATRIDECANEACETATE IONCITRIC ACIDPOTASSIUM ION
a singleacetobacter acetistructure