Table 1.

MS analysis of proteins of interest on 2D-DIGE gel

Spot ID	Protein name	Accession no.	MW (Da)	PI	Peptide counts	Protein score	Protein score % C.I.	Fold increase (cGMP + TGF-β1 vs. TGF-β1)
14	Tubulin β-2 C chain	gi 40018568	49769	4.79	21	184	100	3.33
27	BRCC36	gi 198278575	32994.7	5.84	10	99	100	2.42
15	Vimentin, isoform-β	gi 149021114	53668.1	5.06	29	256	100	2.24
13	Vimentin, isoform-β	gi 149021114	53668.1	5.06	25	256	100	2.21
17	Vimentin, isoform-β	gi 149021114	53668.1	5.06	29	290	100	2.13
18	Aldose reductase	giI6978491	35774.3	6	6	41	43	2.0

MW, Molecular weight; PI, isoelectric point. β2-Tubulin is a cytoskeletal protein. BRCC36 and vimentin are both cytosolic and nuclear proteins (24, 25). The low protein score (43% C.I.) of aldose reductase suggests a possibility of incorrect protein identification. ID, Identification.