Table 1. Mass spectrometry data of SnoN-interacting proteins in HaCaT cells.

Identified proteina,b	gi number	Mass	Scorec	Number of peptides matched	Ion score range
Gel slice 1
SnoN	4885599	76955	137	10	7–69
RBM10	12644371	103396	80	4	6–63
Ski	4506967	79955	64	5	21–49
Gel slice 2
SnoN	4885599	76955	214	19	8–68
Skb1Hs/PRMT5d	232410	72740	161	12	2–82
STK38/NDR1	6005814	54155	115	9	17–52
PTP1Bd	4505995	52609	106	8	4–53
Smad4	4885457	60401	104	12	5–62
α-tubulin	340021	50120	87	3	17–68
Gel Slice 3
No significant hits

^aIdentified proteins represent peptides only present in the SnoN-expressing samples, and not in the control cells.

^bTrypsin, immunoglobulin and keratin are considered contaminants and are omitted from this list.

^conly identified proteins with a score of ≥50 are shown here.

^dThese identified proteins were also present in the control cells, but the number of peptides matched and overall score was much lower in the control cells than in the SnoN-expressing samples.