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Glucose dissociates DDX21 dimers to regulate mRNA processing and promote epidermal differentiation (RNA-Seq III)

ABSTRACT: Glucose dissociates DDX21 dimers to regulate mRNA processing and promote epidermal differentiation (RNA-Seq III)

PROVIDER: PRJNA784988 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17078221_1.fastq.gz	Fastqsanger.gz
	SRR17078221_2.fastq.gz	Fastqsanger.gz
	SRR17078222_1.fastq.gz	Fastqsanger.gz
	SRR17078222_2.fastq.gz	Fastqsanger.gz
	SRR17078223_1.fastq.gz	Fastqsanger.gz

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Glucose dissociates DDX21 dimers to regulate mRNA processing and promote epidermal differentiation

Project description:Glucose dissociates DDX21 dimers to regulate mRNA processing and promote epidermal differentiation

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Glucose dissociates DDX21 dimers to regulate mRNA processing and promote epidermal differentiation (RNA-Seq III)

Project description:Glucose is an important cellular energy source, however, glucose’s function as a second messenger remains relatively unexplored. Here, we find that glucose binds directly to DDX21 to regulate its function during epidermal differentiation. Specifically, glucose binds to the ATP-binding domain of DDX21 to induce a conformational change and inhibit helicase activity. Glucose binding inhibits the dimerization of DDX21 leading to re-localization from the nucleolus to the nucleoplasm and reassembly of DDX21 into larger protein complexes, increasing its association with splicing factors. This occurs during keratinocyte differentiation, where glucose accumulation is necessary, and results in DDX21 binding to RNA processing proteins and mRNA introns. Consequently, DDX21 regulates the splicing of key differentiation factors and promotes epidermal differentiation in a glucose-dependent manner. These findings reveal a novel mechanism of glucose regulation of cell signaling.

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