TABLE 1.

Absolute quantifications of housekeeping proteins in HLM and HLS9

Protein	Gene	HLM (pmol/mg protein)			HLS9 (pmol/mg protein)
		Mean	S.D.	CV	Mean	S.D.	CV
				%			%
Conventional housekeeping proteins	GAPDH	187.56	47.20	25.17	217.26	38.01	17.50
	TUBB	10.13	5.54	54.68	4.31	2.52	58.44
	ACTB	3.32	2.41	72.52	2.99	1.48	49.50
Most stable proteins in HLM	PPIA	63.97	11.21	17.53	168.24	35.24	20.94
	PRDX4	66.37	12.65	19.06	59.92	11.15	18.61
	CAND1	3.51	0.68	19.41	2.49	0.68	27.41
	APEH	9.98	1.98	19.89	5.25	0.92	17.49
	PAICS	13.14	2.73	20.76	8.01	1.65	20.57
Most stable proteins in HLS9	TPI1	35.91	8.55	23.80	138.19	18.41	13.32
	PRDX1	150.31	40.63	27.03	179.04	25.72	14.37
	PGAM1	10.94	2.63	23.99	37.17	6.07	16.33
	PAK1IP1	0.60	0.13	21.76	0.68	0.11	16.72
	APRT	6.46	1.57	24.29	19.40	3.25	16.77

ACTB, β-actin; TUBB, β-tubulin.