Date of Award

Spring 5-18-2019

Degree Type


Degree Name

Master of Science - Natural Sciences


College of Science and Mathematics

First Advisor

Odutayo Odunuga

Second Advisor

Michele Harris

Third Advisor

Kefa Onchoke

Fourth Advisor

Robert Wiggers


Striated muscle UNC-45 (SM UNC-45) protein acts as a chaperone for cardiac and skeletal muscle myosins; regulating their folding, assembly into thick filaments, interaction with other sarcomeric proteins, and degradation. GATA4 is an important transcription factor that regulates the expression of several cardiac muscle proteins, including myosin. A previous study demonstrated for the first time that SM UNC-45 (also known as UNC-45B) physically interacted with GATA4. The major revelation from this study is that SM UNC-45 has the potential to exert both short-term (protein level) and long-term (gene level) controls over myosin and therefore muscle structure and function. The aim of this study was to identify the specific domain in UNC-45 that interacted with GATA4 using protein-protein interaction techniques. Pull down assays suggested that GATA4 bound to the UCS domain of SM UNC-45, and possibly required flanking sequence in the central domain. Understanding this interaction can provide important mechanistic insight into how the SM UNC-45/GATA4 complex modulates muscle structure, function, and perhaps myopathies.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Available for download on Monday, May 20, 2024

Included in

Biochemistry Commons



Tell us how this article helped you.