ETS transcription factor family

ETS Transcription Factor Family

Structure of an ETS domain bound to DNA

The ETS transcription factor family is a group of transcription factors that share a conserved DNA-binding domain known as the ETS domain. This family of proteins is involved in a wide range of biological processes, including cell proliferation, differentiation, apoptosis, and angiogenesis.

Structure

The defining feature of the ETS transcription factor family is the ETS domain, which is approximately 85 amino acids in length. This domain forms a winged helix-turn-helix structure that allows the protein to bind specifically to DNA sequences containing a GGAA/T core motif. The structure of an ETS domain bound to DNA can be seen in the adjacent image.

Function

ETS transcription factors regulate the expression of genes involved in critical cellular processes. They play a crucial role in the development and function of various tissues, including the immune system, vascular system, and nervous system.

Role in Development

During embryogenesis, ETS factors are essential for the proper formation of the mesoderm, endoderm, and ectoderm. They are also involved in the development of the hematopoietic system, where they regulate the differentiation of blood cells.

Role in Disease

Dysregulation of ETS transcription factors has been implicated in various diseases, particularly cancer. Overexpression or mutation of ETS genes can lead to uncontrolled cell growth and tumorigenesis. For example, the ETS-related gene (ERG) is frequently overexpressed in prostate cancer.

Members of the ETS Family

The ETS family consists of numerous members, each with distinct but sometimes overlapping functions. Some well-known members include:

• ETS1
• ETS2
• ERG
• ELK1
• Fli-1

Related Pages

• Transcription factor
• DNA-binding domain
• Gene expression
• Signal transduction