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)
PTBP1	0	-1.070	1.860	-0.617	-1.830	-1.113
RBM22	0	0.250	0.540	-0.425	-1.788	0.001	-1.588	-0.510

Gene name	PTM type	PTM site	UV	UV (MG132)	Sequence
PTBP1	Ubiquitylation	K13	-0.461	0.072	_(ac)MDGIVPDIAVGTK(gl)R_
PTBP1	Ubiquitylation	K92	0.474	0.219	_VTNLLMLK(gl)GK_
PTBP1	Ubiquitylation	K94	1.069	0.999	_VTNLLMLKGK(gl)_
PTBP1	Ubiquitylation	K134	0.323		_GQPIYIQFSNHK(gl)ELK_
PTBP1	Ubiquitylation	K137	-0.157	-0.233	_ELK(gl)TDSSPNQAR_
PTBP1	Phosphorylation	T138	0.390		_ELKT(ph)DSSPNQAR_
PTBP1	Phosphorylation	S140	0.879		_ELKTDS(ph)SPNQAR_
PTBP1	Phosphorylation	S141	0.446	0.650	_ELKTDSS(ph)PNQAR_
PTBP1	Ubiquitylation	K259	0.361		_IDFSK(gl)LTSLNVK_
PTBP1	Ubiquitylation	K266	0.803	-0.412	_LTSLNVK(gl)YNNDK_
PTBP1	Ubiquitylation	K410	0.833		_ITLSK(gl)HQNVQLPR_
PTBP1	Ubiquitylation	K428	0.281		_EGQEDQGLTK(gl)DYGNSPLHR_
PTBP1	Ubiquitylation	K482	1.293	1.265	_VLFSSNGGVVK(gl)GFK_
PTBP1	Ubiquitylation	K489	0.598		_FFQK(gl)DRK_
PTBP1	Ubiquitylation	K528	0.710		_VSFSK(gl)STI_