epidermal growth factor (egf) signaling protein molecule. cartoon representation with secondary structure coloring (green sheets,

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