ERCC1 binds ERCC4 (XPF) to form a heterodimeric ERCC1:ERCC4 (ERCC1:XPF) complex with a DNA endonuclease activity, where ERCC4 is the catalytic subunit. Suitable substrates for the ERCC1:ERCC4 endonuclease are single strand DNA (ssDNA) and ssDNA region of a duplex DNA with an open bubble structure (Park et al. 1995).
Park, CH, Bessho, T, Sancar, A, Matsunaga, T
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