Table 3. Mass spectrometry analysis of renal tubular cell lysates size-fractionated by SDS gel electrophoresis.

Gel regions as MW spans that are subjected to mass spectrometry	Bands recognized by anti-DNaseI antibody on western blot		Presence of DNaseI protein verified by mass spectrometry		Common DNaseI peptides identified by mass spectrometry
	Nuclear extract	Cytoplasmic extract	Nuclear extract	Cytoplasmic extract	Nuclear extract	Cytoplasmic extract
38–40 kDa	No bands	40 kDa	No	Yes	Not detected	LLDNLNQDAPDTYHYVVSEPLGR YDIALVQEVR
50–55 kDa	52 kDa	55 kDa	Yes	Yes	YDIALVQEVR	LLDNLNQDAPDTYHYVVSEPLGR