Fig. 2: The three crystal conformations determined for AbnA. | Communications Biology

Fig. 2: The three crystal conformations determined for AbnA.

From: Integrative structure determination reveals functional global flexibility for an ultra-multimodular arabinanase

Fig. 2: The three crystal conformations determined for AbnA.

a Comparison between the AbnA-Conf1 and the AbnA-Conf2 structures, revealing an opening-closing movement of Domain4. b Superposition of the AbnA-Conf1 (in purple) and AbnA-Conf2 (in red) structures, revealing a ~13 Å downward movement in the relative position of Domain4. This comparison shows that only in the AbnA-Conf2 structure, unlike the AbnA-Conf1 structure, there are hydrogen bond interactions between Domain1 and Domain4. c Superposition of the AbnA-Conf3 (in color) and the AbnA-conf2 (in gray) structures one on the other, viewed from the side (alignment based on Domain 1) and from above (alignment based on Domain4). Such superposition reveals an internal rotation of Domain4 by about 45° relative to the AbnA-Conf2 structure. d Superposition of the AbnA-Conf2 (in blue) and AbnA-Conf3 (in red) structures reveals that the two structures possess different interactions between Domain1 and Domain4.

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