Ett heterogent kärnribonukleoprotein som finns i cellkärnan och cytoplasman. Proteinet deltar i regleringen av genuttrycket på nästan alla nivåer: transkription, mRNA-beredning, mRNA-transport, mRNA-stabilisering och translation. Det har hög affinitet för polypyrimidinrikt RNA och för enkelsträngat polypyrimidinrikt DNA. Ett flertal isomerer av detta protein finns, pga alternativ spjälkning, och de uppvisar olika nukleinsyrabindande egenskaper.
A heterogeneous-nuclear ribonucleoprotein found in the CELL NUCLEUS and the CYTOPLASM. Heterogeneous-nuclear ribonucleoprotein K has been implicated in the regulation of gene expression at nearly all levels: GENETIC TRANSCRIPTION; mRNA processing (RNA PROCESSING, POST-TRANSCRIPTIONAL), mRNA transport, mRNA stability, and translation (TRANSLATION, GENETIC). The hnRNP protein has a strong affinity for polypyrimidine-rich RNA and for single-stranded polypyrimidine-rich DNA. Multiple hnRNP K protein isoforms exist due to alternative splicing and display different nucleic-acid-binding properties.
Inga svenska synonymer finns.
Heterogeneous Nuclear Ribonucleoprotein K — Ribonucleoprotein K, Heterogeneous-Nuclear — hnRNP K — hnRNP K Protein — dC-Stretch-Binding Protein — dC Stretch Binding Protein — Heterogeneous Nuclear Ribonucleoprotein Particle K Protein