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Overall structure of human ERp44. (A) Stereo ribbon view of the structure of ERp44. The dotted lines denotes the regions (residues 51–53, 119–130, 170–177 and 332–350) that are not resolved. The dimensions of the clover-like molecule are indicated. (B) Secondary structure topology of Trx (left) and ERp44 (right). The latter was made using TopDraw (Bond, 2003): green box, helix; red arrow, β sheet; and red dot, cysteine residue. ERp44, human ERp44; Trx, thioredoxin.
