Heterogeneous nuclear ribonucleoprotein K (HNRNPK)

One of the major pre-mRNA-binding proteins. Likely to play a role in the nuclear metabolism of hnRNAs, especially for pre-mRNAs that contain cytidine-rich sequences.

Can also bind poly(C) single- stranded DNA. Plays an essential role in p53/TP53 response to DNA damage, acting at the level of both transcription activation and repression.