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Figure 2
The protruding β-hairpin and the nearby helix A2 exhibit structural plasticity in the Tim50 molecule. (a) The Tim50_new structure in gold is superimposed with the Tim50_old structure in silver. The Tim50 molecules in this figure are rotated about 90° around the horizontal axis from the orientation in Fig. 1[link]. The putative presequence-binding groove faces the reader in this figure. The secondary structures A2, B2 and B3 are labeled. The N-terminus and C-terminus of Tim50 are labeled. The Tim50_new structure shown here is monomer E in the asymmetric unit, which belongs to group I. (b) Structure superimposition of Tim50_new monomers from groups I and II. The group I monomer E is in gold and the group II monomer A is in cyan. The secondary structures A2, B2 and B3 are labeled. The N-terminus and C-terminus of Tim50 are labeled. The Tim50 molecules in this figure are in similar orientations to those in (a). The putative presequence-binding groove is labeled.

Journal logoSTRUCTURAL BIOLOGY
COMMUNICATIONS
ISSN: 2053-230X
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