Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/2AHX 2AHX: Crystal structure of ErbB4/HER4 extracellular domain Receptor tyrosine-protein kinase erbB-42-acetamido-2-deoxy-beta-D-glucopyranoseSULFATE ION crystal structureextracellulardomain