TABLE 1

Proteins identified from CsCl gradients

Proteins Identified from Fractions 1 and 2
Architectural/structural and associated proteins
Cytokeratin 18	39^a	a6,a7^b
Cytokeratin 8	34^a	a5,a6^b
Cytokeratin 19	24^a	a7,a8^b
Plectin 1	58^a	a1^b
Alpha-actinin 4	27^a	a2^b
Translation regulators
EF-2	30^a	a2^b
Stress response
60-kDa heat shock protein, mitochondrial precursor (HSP-60)	19^a	a4,a5^b
Heat shock protein HSP-90-β (HSP-90)	28^a	a2,a3^b
Heat shock protein HSP-90-α (HSP-86)	34^a	a2,a3^b
Others
Importin β1-subunit	25^a	a2,a3^b
Fatty acid synthase	23^a	a1^b
Proteins Identified from Fractions 7, 8, and 9
Architectural/structural and associated proteins
Cytokeratin 2e	12^a	b2^b
Cytokeratin 18	9^a	b5^b
Cytokeratin 19	11^a	b6^b
Cytokeratin 1	13^a	b2^b
Cytokeratin 10	9^a	b2,b3^b
Cytokeratin 9	6^a	b2,b3^b
Cytokeratin 8	11^a	b3^b
Translation regulators
Elongation factor 1-γ	3^a	b4^b
Elongation factor 1-α2	4^a	b4^b
Others
Alpha-enolase	6^a	b4^b