MYB (Myeloblastosis Viral Oncogene Homolog) is a proto-oncogene that encodes a transcription factor. It belongs to the MYB family of proteins, which are involved in the regulation of cell proliferation, differentiation, and apoptosis.
Function: MYB plays a crucial role in hematopoiesis, specifically in the development of hematopoietic stem cells and progenitor cells into various blood cell lineages. It regulates the expression of genes involved in cell cycle progression, DNA replication, and differentiation. See: Function
Structure: The MYB protein contains a highly conserved DNA-binding domain, known as the MYB domain, which consists of three imperfect repeats. This domain allows MYB to bind to specific DNA sequences and regulate the transcription of target genes. See: Structure
Role in Cancer: Overexpression or mutations of MYB have been implicated in several types of cancer, including acute myeloid leukemia (AML), T-cell acute lymphoblastic leukemia (T-ALL), and colon cancer. In these cancers, MYB can promote uncontrolled cell growth and inhibit differentiation. See: Role%20in%20Cancer
Regulation: The expression and activity of MYB are tightly regulated by various mechanisms, including transcriptional control, post-translational modifications, and interactions with other proteins. Dysregulation of these mechanisms can contribute to the oncogenic potential of MYB. See: Regulation
Therapeutic Target: Due to its importance in cancer development, MYB has emerged as a potential therapeutic target. Strategies aimed at inhibiting MYB expression or activity are being explored as potential cancer therapies. See: Therapeutic%20Target
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