Has an important role in DNA replication and in maintaining genome integrity during replication stress (By similarity). Promotes PCNA deubiquitination (By similarity). As component of the Elg1 RFC-like complex, regulates the functions of the DNA polymerase processivity factor PCNA by unloading it from DNA after replication during the S phase of the cell cycle (PubMed:27198229). The PCNA-unloading might be regulated via interaction with the Enok acetyltransferase complex (PubMed:27198229). Might have a role in restarting of stalled/regressed replication forks during replication stress (By similarity). In the ovaries, has a role in nurse cell endoreplication (PubMed:27198229). Component of a heteropentameric Elg1 RFC-like complex composed of one large subunit (elg1) and four small subunits (RfC4, RfC38, CG8142 and RfC3) (PubMed:27198229). As part of the complex, might interact with the Enok complex, composed of enok, Br140, Eaf6 and Ing5 (PubMed:27198229). Within the Enok complex, interacts directly with Br140 (PubMed:27198229). Expressed at higher levels in the germline nurse cells than in the somatic follicle cells. RNAi-mediated knockdown in the ovaries, results in lower DNA content in the nurse cells and defective development of egg chambers (PubMed:27198229). Simultaneous knockdown of elg1 and enok, results in relatively bigger and higher DNA content than single elg1 knockdown (PubMed:27198229). Further, egg chambers in ~25% of the ovarioles are able to develop beyond stage 9 with morphologically normal nurse cells (PubMed:27198229). Belongs to the ELG1 family.