LDLR-4: A Unique Gene Regulating Gene Expression (G3949)

Target Name: LDLR

NCBI ID: G3949

LDLR

LDLR-4: A Unique Gene Regulating Gene Expression

LDLR (long double-stranded RNA) is a gene that encodes for a protein known as long double-stranded RNA binding protein (LDBP). LDBP is a nuclear protein that plays a crucial role in the regulation of gene expression. It is composed of two subunits, p160 and p162, which contain distinct N-terminal and C-terminal regions, respectively. LDBP functions as a negative regulator of RNA polymerase II (RNA-II) by binding to specific regions of the RNA polymerase II active site, thereby inhibiting its catalytic activity.

LDLR variants have been identified, and one of them, LDLR variant 4 (LDLR-4), has been shown to play a unique role in the regulation of gene expression in various organisms. LDLR-4 is a unique variant of LDLR, as it has a specific substitution in its amino acid sequence, which results in a alteration in its stability and function.

LDLR-4 functions as a positive regulator of gene expression in E. coli bacteria. It has been shown to enhance the expression of genes encoding proteins involved in cell growth, metabolism, and stress responses, such as the bacterial flagellum and the bacterial cytochrome P450 enzyme. Additionally, LDLR-4 has been shown to promote the translation of mRNA into protein, which may contribute to its positive role in gene expression.

LDLR-4 has also been shown to play a negative role in the regulation of gene expression in human cancer cells. It has been shown to suppress the translation of mRNA encoding anti-cancer proteins and enhance the translation of mRNA encoding pro-cancer proteins.

In addition to its role in gene expression, LDLR-4 has also been shown to play a structural role in the regulation of RNA polymerase II. It has been shown to interact with the active site of RNA-II, which may contribute to its function as a negative regulator.

Conclusion

LDLR variant 4 is a unique gene that has been shown to play a crucial role in the regulation of gene expression in various organisms. Its specific substitution in the amino acid sequence has resulted in a alteration in its stability and function, such as enhanced translation of mRNA into protein and positive regulation of gene expression. Additionally, LDLR-4 has been shown to play a negative role in the regulation of gene expression in human cancer cells.

Given its unique role in gene expression, LDLR-4 may be a promising drug target or biomarker for the development of cancer therapies. Further research is needed to fully understand the mechanisms of LDLR-4 and its role in the regulation of gene expression.

Protein Name: Low Density Lipoprotein Receptor

Functions: Binds LDL, the major cholesterol-carrying lipoprotein of plasma, and transports it into cells by endocytosis. In order to be internalized, the receptor-ligand complexes must first cluster into clathrin-coated pits

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