epidermal growth factor egf signaling protein molecule. atoms are represented as spheres with conventional color coding.

acid afatinib amino are as atoms brigatinib cancer cell cetuximab coding colon color conventional disease egf egfr epidermal erlotinib factor gefitinib growth health icotinib inhibitor lapatinib lung model molecular molecule osimertinib panitumumab pdb2kv4 peptide polymer polypeptide protein receptor represented residue science scientific signaling spheres structure targeted tumor