RNAi screen result	RNAPII IP (MG132)	CSB IP	CSB IP (MG132)	Chrom.	Chrom. (MG132)	Ubi /Phospo	Ubi /Phospho (MG132)
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Gene name	MGoogle Score	RNAi high	RNAi low	RNAPII-IP (MG132)	CSB-IP	CSB-IP (MG132)	Chrom.	Chrom. (MG132)
ARHGAP21	0	1.110	-0.680				0.484	0.639

Gene name	PTM type	PTM site	UV	UV (MG132)	Sequence
ARHGAP21	Phosphorylation	S318	-0.570	-0.616	_TTS(ph)PPLSIPTTHLIHQPAGSR_
ARHGAP21	Phosphorylation	S458		0.574	_SVS(ph)QERLEDSVLMK_
ARHGAP21	Phosphorylation	S474		0.062	_S(ph)ASQGALTSPSVSFSNHR_
ARHGAP21	Phosphorylation	S476		0.570	_SAS(ph)QGALTSPSVSFSNHR_
ARHGAP21	Phosphorylation	S1098	-0.283	0.103	_TQSPHS(ph)PKEESERK_
ARHGAP21	Phosphorylation	S1377		0.244	_TGVS(ph)PGDVSDSATSDSTK_
ARHGAP21	Phosphorylation	S1503	-0.718	-0.864	_ESTPSEEPS(ph)PPHNSK_
ARHGAP21	Phosphorylation	S1671	0.412		_RNSEGS(ph)ELSCTEGSLTSSLDSR_
ARHGAP21	Phosphorylation	S1674	1.136		_RNSEGSELS(ph)CTEGSLTSSLDSR_
ARHGAP21	Phosphorylation	S1860	0.454	0.616	_LRTS(ph)TSDLSR_