SPRTN binds monoUb:K164-PCNA associated with POLH

Stable Identifier
Reaction [binding]
Homo sapiens
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SPRTN (Spartan, C1orf124, DVC1) contains a PIP box and a UBZ domain that both participate in binding to monoubiquitinated PCNA (MonoUb:K164-PCNA), thus regulating POLH-mediated translesion DNA synthesis (TLS). The SPRTN UBZ domain may also interact with other monoubiquitinated proteins at the site of DNA damage. SPRTN can also bind RAD18 and function in a positive feedback loop to increase (or maintain) PCNA monoubiquitination (Centore et al. 2012, Ghosal et al. 2012).

Endogenous SPRTN is predominantly expressed during S and G2 phases of the cell cycle, and is rapidly degraded by the APC:CDH1 complex at mitotic exit (Mosbech et al. 2012).

Literature References
PubMed ID Title Journal Year
22681887 Spartan/C1orf124, a reader of PCNA ubiquitylation and a regulator of UV-induced DNA damage response

Centore, RC, Zou, L, Tse, A, Yazinski, SA

Mol. Cell 2012
23042605 DVC1 (C1orf124) is a DNA damage-targeting p97 adaptor that promotes ubiquitin-dependent responses to replication blocks

Hartmann-Petersen, R, Lukas, J, Beli, P, Lukas, C, Choudhary, C, Gibbs-Seymour, I, Bekker-Jensen, S, Mailand, N, Pocock, R, Mosbech, A, Povlsen, L, Smedegaard, S, Nielsen, SV, Kagias, K, Sedgwick, G, Thorslund, T

Nat. Struct. Mol. Biol. 2012
22902628 Proliferating cell nuclear antigen (PCNA)-binding protein C1orf124 is a regulator of translesion synthesis

Leung, JW, Fong, KW, Chen, J, Nair, BC, Ghosal, G

J. Biol. Chem. 2012
Orthologous Events
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