Table 1. Summary of PAR-binding modules.

Module name	Recognition unit	Protein(s)	Reference(s)
PAR-binding zinc finger (PBZ)	Tandem ADP-ribose	APLF, CHFR	(76,161,172)
Macro domain	ADP-ribose	macroH2A1.1, ARTD7, ARTD8, ARTD9, macroD1, macroD2, macroD3, ALC1, TARG1, PARG	(108,173)
WWE domain	iso-ADP-ribose	RNF146, HUWE1, ULF, Deltex1, Deltex2, Deltex4, ARTD11	(174,175)
BRCT domain	ADP-ribose	BARD1, LIG4, NBS1, XRCC1, ECT2	(50,66,176)
FHA domain	iso-ADP-ribose	PNKP, APTX	(50)
OB-fold domain	iso-ADP-ribose	SSB1, CTC1, MEIOB, SSB2	(105)
RRM domain		NONO	(177)
PIN domain		EXO1, GEN1, SMG5	(106)
PAR-binding regulatory (PbR) motif		Chk1	(178)