hnRNP C1/C2 (D6S3N) Rabbit mAb #91327

Heterogeneous nuclear ribonucleoprotein C1/C2 (hnRNP C1/C2) has multiple biological functions including transcriptional regulation, DNA repair, and RNA processing. hnRNP C1/C2 acts as a ‘molecular ruler’ in the mRNA processing pathway, committing nascent transcripts from the chromatin template to the mRNA export pathway once the nascent transcript becomes longer than 200-300 nucleotides (1). hnRNP C1/C2 associates with SWI/SNF and NurD family members to form the locus control region (LCR)-associated remodeling complex (LARC), which binds to β-globin gene promoter to prevent transcriptional silencing. Studies indicate that without hnRNP C1/C2, LARC does not associate with its target DNA sequence (2,3). hnRNP C1/C2 and other hnRNP family members interact with DNA damage response (DDR) proteins (4). hnRNP proteins regulate double stranded break (DSB) repair by promoting either homologous recombination (HR) or non-homologous end joining (NHEJ) (4). hnRNP C1/C2 downregulates the expression of miR-21, which leads to the increased expression of programmed cell death 4 (PDCD4) protein in glioblastoma multiforme (GBM) (5). Research studies have shown that silencing of hnRNP C1/C2 renders GBM cells more susceptible to apoptosis (5).