Clusters of deep intronic RbFox motifs embedded in large assembly of splicing regulators sequences regulate alternative splicing.

ABSTRACT: The RbFox RNA binding proteins regulate alternative splicing of genes governing mammalian development and organ function. They bind to the RNA sequence (U)GCAUG with high affinity but also non-canonical secondary motifs in a concentration dependent manner. However, the hierarchical requirement of RbFox motifs, which are widespread in the genome, is still unclear. Here we show that deep intronic, tightly clustered RbFox1 motifs cooperate and are important regulators of alternative exons splicing. Bioinformatic analysis revealed that (U)GCAUG-clusters are widely present in both mouse and human genes and are embedded in sequences binding the large assembly of splicing regulators (LASR). Integrative data analysis from eCLIP and RNAseq experiments showed a global increase in RNA isoform modulat

SUBMITTER: Tomassoni-Ardori F 

PROVIDER: S-EPMC12435732 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature