issue contents

Journal logoSTRUCTURAL
ISSN: 2059-7983

November 2017 issue

Highlighted illustration

Cover illustration: Four new types of d(CGCGCG)2 crystals have been obtained (Z3A, Z3B, Z4A and Z4B) in the course of investigating Z-DNA crystallized under various conditions. Their high-resolution structures have been described and compared with other crystal forms of Z-DNA duplexes (Luo et al., p. 940). The reciprocal lattice of the Z4A crystal is shown here with three reciprocal orthorhombic unit cells of the three twinned domains represented in different colours. Reflections belonging simultaneously to all three domains have contributions from all colours. This figure also illustrates the diffraction pattern of the 5ebi crystal, with each colour representing pairs of superposed reflections resulting from two twin domains related by one of the three twofold axes in the plane of the figure.

research papers

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This work describes eight crystal forms of the neuronal Nogo Receptor, a cell-surface receptor involved in neuronal plasticity. These are the first structures of this protein with a native disulfide pattern, and suggest a novel mode of self-interaction.

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The synergy between current phase-refinement techniques and out-of-mainstream refinement methods leads to a dramatic advance in the state of the art.

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The crystal structure of the L-asparaginase from T. kodakarensis has been determined at 2.18 Å resolution, revealing a number of distinctive structural features. This enzyme has many applications in food processing and chemotherapy.

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Six crystal structures of serum albumins, caprine (two forms), ovine (two forms) and their complexes with 3,5-diiodosalicylic acid (DIS), have been determined at resolutions in the range 1.78–2.55 Å. Comparison with homologous complexes of bovine, equine and human serum albumins shows surprising differences in their DIS-binding properties.

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YiuA, a Yersinia pestis substrate-binding protein, contains a putative basic triad binding motif in the canonical substrate-binding site, indicative of a metal-chelate complex binding site. Additional structural and simulation analyses support the putative function of YiuA binding bacterial siderophores.

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Four highly pseudomerohedrally twinned crystal structures of the hexamer duplex d(CGCGCG)2 in the left-handed Z-DNA form are described and are compared with other pseudohexagonal crystal structures of Z-DNA oligomers.

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