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Target intelligence / Profile preview
Homeobox protein Mohawk (MKX)
- Target
- MKX
- Molecular classification
- Transcription factor, Homeobox protein, Three Amino acid Loop Extension (TALE) atypical homeobox class
01
Overview
Homeobox protein Mohawk (MKX) is a transcription factor belonging to the Iroquois-related (IRX) subclass of homeobox genes, specifically a "three-amino acid loop extension" (TALE) homeodomain protein. MKX is crucial for tendon and ligament development, promoting collagen fiber growth and extracellular matrix production during embryogenesis and in adult tissue homeostasis. MKX represses MyoD and inhibits muscle differentiation, favoring tendon cell fate. Loss of MKX leads to tendon hypoplasia, reduced type I collagen, and abnormal tendon structure in animal models. MKX is also implicated in the maintenance of ligamentous tissues, osteogenic inhibition in specific progenitor cell populations, and as a mechanosensitive regulator of tissue differentiation and repair. MKX is not a classical therapeutic target (e.g., receptor or enzyme), but it is studied as a biomarker and a potential regenerative medicine target for tendon repair and degenerative musculoskeletal diseases.
- Other names
- Iroquois homeobox protein-like 1IRXL1C10orf48IFRXMGC39616
02
Biological functions
Regulation of tendon formation and differentiation (tenogenesis)Regulation of extracellular matrix genes (especially collagen I)Maintenance and regeneration of tendons and ligamentsInhibition of osteogenic (bone) differentiation in certain progenitor cellsRegulation of MyoD expression and muscle differentiationResponse to mechanical stress
03
Disease associations
Musculoskeletal disorders and tendon injuries (e.g., healing, hypoplasia, degenerative tendon disease)OsteoarthritisAccelerated disc degenerationFibrosis and abnormal ossification of tendon/ligament tissue
04
Biomarkers
Marker for tendon/ligament progenitor cellsMarker for tenogenic differentiation potentialDecreased expression may indicate aging or degeneration of tendons
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