Vol. 270, p. 14523
Page 14527, Fig. 2B: During preparation of this figure, a stretch of 56 amino acid residues of SMDF after residue 49 (P) were inadvertently deleted and mistakenly inserted before residue 158 (Q). The correct SMDF sequence was shown in Fig. 1A. The error does not affect the interpretation of the results or conclusions drawn in the paper. The corrected panel B is shown below.
Figure 2: