MaRZF1

Gene Details:

RING-type ubiquitin E3 ligase MaRZF1 interacts with chlorophyll catabolic enzyme MaSGR1, which promotes the ubiquitination and proteasomal degradation of MaSGR1, causing the green ripening of banana fruit under high temperature.
These findings unravel an important novel regulatory cascade involving the MaRZF1-MaSGR1 complex that modulates high temperature-repressed chlorophyll degradation, explaining the green ripening banana phenomenon that occurred under high-temperature conditions, as well as enriching regulatory effects understanding of posttranslational modifications in temperature stress-caused fruit colour quality deterioration.
In contrast with the decrease in the MaSGR1 protein level, MaRZF1 protein level was noticeably increased in the anti-MaSGR1 antibody immunoprecipitated complex in fruits at 30°C compared with fruits at 20°C. These results suggest that high temperature induced ubiquitination of MaSGR1 and MaRZF1 may participate in this process.