Table 1.

Correlation of the level of the anti-DnaJ antibodies (IgG) with the levels of the anti-DNAJA1/2 autoantibodies (IgG) in the sera of the rheumatoid arthritis (RA) patients

	DnaJ (2.5)	DnaJ (0.15)
DNAJA1
(2.5)	0.631, p < 0.001
(0.15)		0.847, p < 0.001
DNAJA2
(2.5)	−0.151, p = 0.333
(0.15)		−0.150, p = 0.338
DNAJA1f
(2.5)	0.442, p = 0.003
(0.15)		0.33, p = 0.029
DNAJA2f
(2.5)	0.176, p = 0.259
(0.15)		0.161, p = 0.302

The levels of the antibodies were assayed by ELISA test in the sera of 43 RA patients (presented in Table S1, Supplementary data) as described in “Materials and methods,” using antigens at the concentrations (in micrograms per milliliter) indicated in parentheses. DNAJA1^f and DNAJA2^f are the farnesylated proteins produced in the baculovirus system. The other proteins were produced in the bacterial system. The correlations between the antibody levels are presented as Pearson’s coefficients (r). The statistically significant values are shown in italics