The HARP-like Domain-Containing Protein AH2/ZRANB3 Binds to PCNA and Participates in Cellular Response to Replication Stress

Jingsong Yuan, Gargi Ghosal, Junjie Chen

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

Proteins with annealing activity are newly identified ATP-dependent motors that can rewind RPA-coated complementary single-stranded DNA bubbles. AH2 (annealing helicase 2, also named as ZRANB3) is the second protein with annealing activity, the function of which is still unknown. Here, we report that AH2 is recruited to stalled replication forks and that cells depleted of AH2 are hypersensitive to replication stresses. Furthermore, AH2 binds to PCNA, which is crucial for its function at stalled replication forks. Interestingly, we identified a HARP-like (HPL) domain in AH2 that is indispensible for its annealing activity in vitro and its function in vivo. Moreover, searching of HPL domain in SNF2 family of proteins led to the identification of SMARCA1 and RAD54L, both of which possess annealing activity. Thus, this study not only demonstrates the in vivo functions of AH2, but also reveals a common feature of this new subfamily of proteins with annealing activity.

Original languageEnglish (US)
Pages (from-to)410-421
Number of pages12
JournalMolecular Cell
Volume47
Issue number3
DOIs
StatePublished - Aug 10 2012

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Proliferating Cell Nuclear Antigen
Proteins
Single-Stranded DNA
Complementary DNA
Adenosine Triphosphate
pleiotrophin
Protein Domains

ASJC Scopus subject areas

  • Molecular Biology
  • Cell Biology

Cite this

The HARP-like Domain-Containing Protein AH2/ZRANB3 Binds to PCNA and Participates in Cellular Response to Replication Stress. / Yuan, Jingsong; Ghosal, Gargi; Chen, Junjie.

In: Molecular Cell, Vol. 47, No. 3, 10.08.2012, p. 410-421.

Research output: Contribution to journalArticle

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