Myc genes are a family of proto-oncogenes (L- Myc, N- Myc and C- Myc) that codes for Myc proteins which are transcriptor factors implicated in cellular proliferation, differentiation, apoptosis, metabolism, adhesion and self-renovation of tumor stem cells. Myc protein can act as transcriptional activator/repressor, and is activated via response to diverse mitogenic signals (including Wnt, Shh and EGF) and has been found to be up-regulated in several types of cancers. c-Myc participates gene transcription regulation and binds DNA in a non-specific manner, yet can specifically recognizes core sequence 5'-CAC[GA]TG-3' also. c-Myc heterodimerization with another bHLH protein namely Myc-associated factor X (MAX) is required for efficient c-Myc- DNA binding. c-Myc interacts with several proteins such as TAF1C, SPAG9, PARP10, KDM5A, KDM5B, NO66, PIM2 and with FBXW7 when phosphorylated at Thr-58/Ser-62. c-Myc activate the transcription of growth-related genes and c- Myc overexpression induce cell-cycle progression thereby implicating in a variety of cancers. Moreover, a chromosomal aberration involving c-Myc has been linked to a form of B-cell chronic lymphocytic leukemia and defective c-MYC is responsible for Burkitt lymphoma also.