The c-Myc protein is a transcription factor, which is encoded by the c-Myc gene on human chromosome 8q24. c-Myc is a multifunctional, nuclear phosphoprotein that functions as a transcription factor with a theoretical molecular weight of 62kDa. However, c-Myc is extremely labile and is degraded very quickly even in extracts prepared with boiling SDS sample buffer, such that a molecular weight of ~40 kDa has been observed. c-Myc is part of a heterodimeric complex with Max that acts as a potent transcriptional activator. c-Myc is modified by glycosylation and phosphorylation and has been shown to interact with numerous proteins including SMAD2, SMAD3, LSD1/KDM1A, MAD, and Sp1 (1).
A basic Helix-Loop-Helix, Leucine Zipper domain (bHLH/LZ), designated Max, specifically associates with c-Myc, N-Myc and L-Myc proteins. The Myc-Max complex binds to DNA in a sequence-specific manner under conditions where neither Max nor Myc exhibit appreciable binding. Max can also form heterodimers with other bHLH-Zip proteins, Mad and Mxi1. c-Myc plays a role in cell cycle progression, apoptosis, cellular transformation and angiogenesis (2). Mutations, overexpression, rearrangement and translocation of this gene have been associated with a variety of cancers including B-cell Lymphomas, acute myeloid leukemia, glioblastoma, stomach adenocarcinoma, and prostate adenocarcinoma (3).
1. Wilkinson, D. S., Tsai, W. W., Schumacher, M. A., & Barton, M. C. (2008). Chromatin-bound p53 anchors activated Smads and the mSin3A corepressor to confer transforming-growth-factor-beta-mediated transcription repression. Mol Cell Biol, 28(6), 1988-1998. doi:10.1128/mcb.01442-07
2. Pedrosa, A. R., Bodrug, N., Gomez-Escudero, J., Carter, E. P., Reynolds, L. E., Georgiou, P. N.,... Hodivala-Dilke, K. M. (2019). Tumor Angiogenesis Is Differentially Regulated by Phosphorylation of Endothelial Cell Focal Adhesion Kinase Tyrosines-397 and -861. Cancer Res, 79(17), 4371-4386. doi:10.1158/0008-5472.Can-18-3934
3. Nagasaka, M., Tsuzuki, K., Ozeki, Y., Tokugawa, M., Ohoka, N., Inoue, Y., & Hayashi, H. (2019). Lysine-Specific Demethylase 1 (LSD1/KDM1A) Is a Novel Target Gene of c-Myc. Biol Pharm Bull, 42(3), 481-488. doi:10.1248/bpb.b18-00892
|Product By Gene ID
- Proto-oncogene c-Myc
- myc-related translation/localization regulatory factor
- Class E basic helix-loop-helix protein 39
- myc proto-oncogene protein
- v-myc avian myelocytomatosis viral oncogene homolog
- avian myelocytomatosis viral oncogene homolog
- Transcription factor p64
- v-myc myelocytomatosis viral oncogene homolog (avian)