Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/5K51
Hypoxanthine-guanine phosphoribosyltransferase5-(6-oxidanylidene-3~{H}-purin-9-yl)pentylphosphonic acid
trypanosomehypoxanthineguaninecomplex
https://elifesciences.org/articles/13044v1
evolutionary diversificationtrypanosomehaptoglobinhaemoglobinreceptor