University Of California Researchers Develop New Enzyme Linked to Cell Growth, Cancer
A team of scientists from the University of California has made a groundbreaking discovery regarding ZCCHC4, an innovative enzyme responsible for modifying RNA molecules.
The presence of ZCCHC4 has been found to have a significant impact on cell proliferation and has been linked to various forms of cancer. Additionally, the researchers have successfully identified the precise mechanism by which the ZCCHC4 enzyme recognizes its specific substrate.
ZCCHC4, during its function, introduces a specific RNA modification called N6-methyladenosine (m6A) into ribosomes, which are essential organelles within cells composed of RNA and proteins.
Furthermore, the researchers have uncovered that ZCCHC4 controls both protein synthesis and cell proliferation by incorporating these m6A modifications into ribosomes.
Notably, the overexpression of ZCCHC4 has been observed in hepatocellular carcinoma samples, which is the most frequently diagnosed type of primary liver cancer.
The significance of m6A in RNA metabolism and biology has garnered considerable attention in recent years. However, the precise mechanisms governing its dynamic programming and distribution throughout the cell remain poorly understood.
To delve into this subject, the researchers first generated a structurally rigid fragment of ZCCHC4 that retained its enzymatic activity. Subsequently, they successfully crystallized this protein structure and employed x-ray diffraction techniques to analyze the resulting crystals.
Through meticulous analysis of the data obtained, the researchers ultimately unveiled the detailed structure of ZCCHC4.
The investigation of this novel enzyme was spearheaded by Jikui Song, an associate professor of biochemistry at UC Riverside, alongside the contributions of Mengjiang Huang, Jiuwei Lu, Wendan Ren, and Linfeng Gao from UC Riverside, as well as Dongxu Li and Gang Greg Wang from the University of North Carolina at Chapel Hill.
