Replication Initiator 1 (REPIN1)

AP4; RIP60; ZNF464; Zfp464; Replication Initiation Region Protein(60kD); Zinc Finger Protein 464; 60 kDa origin-specific DNA-binding protein; ATT-binding protein

SPN	Q289
HGNC	17922
MGI	1889817
PubMed	21701954
RGD	1549707
UniProt	Q9BWE0
Wiki	REPIN1

Replication initiator 1 is a protein encoded by the REPIN1 gene. Homodimers of RIP60 (replication initiation-region protein 60 kDA) purified from nuclear extract bind two ATT-rich sites in oribeta and foster the formation of a twisted 720 bp DNA loop in vitro.

RIP60 contains 15 C(2)H(2)zinc finger (ZF) DNA binding motifs organized in three clusters, termed hand Z1 (ZFs 1-5), hand Z2 (ZFs 6-8) and hand Z3 (ZFs 9-15). A proline-rich region is located between hands Z2 and Z3. Gel mobility shift and DNase I footprinting experiments show hands Z1 and Z2 independently bind the oribeta RIP60 sites specifically, but with different affinities. Hand Z3 binds DNA, but displays no specificity for RIP60 sites.

Reference

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