RNAi screen result	RNAPII IP (MG132)	CSB IP	CSB IP (MG132)	Chrom.	Chrom. (MG132)	Ubi /Phospo	Ubi /Phospho (MG132)
W

Gene name	MGoogle Score	RNAi high	RNAi low	RNAPII-IP (MG132)	CSB-IP	CSB-IP (MG132)	Chrom.	Chrom. (MG132)
MGAT5	1	-2.020	2.970
POMGNT1	0	-0.420	-0.440
POMGNT2	0	0.720	-0.520				0.650	-0.290
OGT	0	1.490	-0.570	-0.592	-0.437	0.134		-0.210
EXT2	0	-1.290	1.340

Gene name	PTM type	PTM site	UV	UV (MG132)	Sequence
EXT2	Ubiquitylation	K126		0.339	_VYIYALKK(gl)_
EXT2	Ubiquitylation	K181		0.503	_IK(gl)ETAQAMAQLSR_
EXT2	Ubiquitylation	K523		-0.044	_VPLK(gl)VVR_
EXT2	Ubiquitylation	K531		0.165	_TAENK(gl)LSNR_
MGAT5	Ubiquitylation	K55		0.783	_EQILDLSK(gl)R_
OGT	Ubiquitylation	K16	-0.519	-0.569	_(ac)ASSVGNVADSTEPTK(gl)R_
OGT	Ubiquitylation	K168	0.402		_SDLGNLLK(gl)ALGR_
OGT	Ubiquitylation	K550	0.459	0.519	_DLK(gl)LSDGR_
OGT	Ubiquitylation	K752	-0.448	-0.267	_AFLDSLPDVK(gl)IVK_
OGT	Ubiquitylation	K755		-0.071	_AFLDSLPDVKIVK(gl)_
OGT	Ubiquitylation	K991		0.231	_LGTDLEYLK(gl)K_
OGT	Ubiquitylation	K1010	0.122		_ISSPLFNTK(gl)QYTMELER_
POMGNT1	Ubiquitylation	K11	-1.033		_(ac)MDDWKPSPLIK(gl)PFGAR_