Protein Name: Proliferating cell nuclear antigen
|
UniprotKB/SwissProt ID: PCNA_MOUSE (P17918)
Gene Name: Pcna
Organism: Mus musculus (Mouse).
Function: Auxiliary protein of DNA polymerase delta and is involved in the control of eukaryotic DNA replication by increasing the polymerase's processibility during elongation of the leading strand. Induces a robust stimulatory effect on the 3'- 5' exonuclease and 3'-phosphodiesterase, but not apurinic- apyrimidinic (AP) endonuclease, APEX2 activities. Has to be loaded onto DNA in order to be able to stimulate APEX2. Plays a key role in DNA damage response (DDR) by being conveniently positioned at the replication fork to coordinate DNA replication with DNA repair and DNA damage tolerance pathways. Acts as a loading platform to recruit DDR proteins that allow completion of DNA replication after DNA damage and promote postreplication repair: Monoubiquitinated PCNA leads to recruitment of translesion (TLS) polymerases, while 'Lys-63'-linked polyubiquitination of PCNA is involved in error-free pathway and employs recombination mechanisms to synthesize across the lesion (By similarity).
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Nucleus. Note=Forms nuclear foci representing sites of ongoing DNA replication and vary in morphology and number during S phase. Together with APEX2, is redistributed in discrete nuclear foci in presence of oxidative DNA damaging agents.
| |
|
Network with metabolic pathway:
|
|
Graphical Visualization of S-nitrosylation Sites:
|
| Overview of Protein S-nitrosylation Sites with Functional and Structural Information |  |
|
