issue contents

ISSN: 2053-230X

February 2017 issue

Highlighted illustration

Cover illustration: Quaternary structure of Methylobacterium extorquens AM1 malyl-CoA lyase (González et al., p. 79).

research communications

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The crystal structure of the N-terminal anticodon-binding domain of the nondiscriminating aspartyl-tRNA synthetase from the human pathogen H. pylori was determined at a resolution of 2.0 Å. Two important turns (78GAGL81 and 83NPKL86), along with the conserved Pro84, are proposed to play a crucial role in the recognition of tRNAAsp and tRNAAsn.

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Polysaccharide monooxygenase 2 from N. crassa was expressed from a glycoengineered strain of P. pastoris. Crystals of the protein bearing modified N-linked glycans showed improved X-ray diffraction at 100 K (1.20 Å resolution) and permitted room-temperature neutron diffraction data collection to 2.12 Å resolution.

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The structure of M. extorquens malyl-CoA lyase is reported, along with a detailed analysis of the domain motions involved in regulating its enzymatic activity.

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Recombinant D-threonine aldolase from the green alga C. reinhardtii was purified to homogeneity and crystallized. An X-ray diffraction data set was collected to 1.85 Å resolution.

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D-glycero-β-D-manno-Heptose-1-phosphate adenylyltransferase (HldC) from B. pseudomallei has been cloned, expressed, purified and crystallized. Synchrotron X-ray data from a selenomethionine-substituted HldC crystal were collected to 2.8 Å resolution.

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The crystal structure of the 15-residue peptaibol bergofungin A resembles that of the closely related samarosporin I. The differences in these structures, as well as the significant variation in their respective antibiotic functions, are presented.

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The crystal structure of PD1 from the Haemophilus surface fibril was determined at a resolution of 3.3 Å, revealing a novel domain arrangement.

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