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Expression purification crystallization and preliminary X-ray analysis of Pseudomonas aeruginosa PelD

Journal Article · · Acta Crystallographica Section F: Structural Biology and Crystallization Communications
The production of the PEL polysaccharide in Pseudomonas aeruginosa requires the binding of bis-(3',5')-cyclic dimeric guanosine monophosphate (c-di-GMP) to the cytoplasmic GGDEF domain of the inner membrane protein PelD. Here, the overexpression, purification and crystallization of a soluble construct of PelD that encompasses the GGDEF domain and a predicted GAF domain is reported. Diffraction-quality crystals were grown using the hanging-drop vapour-diffusion method. The crystals grew as flat plates, with unit-cell parameters a = 88.3, b = 114.0, c = 61.9 {angstrom}, {alpha} = {beta} = {gamma} = 90.0{sup o}. The PelD crystals exhibited the symmetry of space group P2{sub 1}2{sub 1}2 and diffracted to a minimum d-spacing of 2.2 {angstrom}. On the basis of the Matthews coefficient (V{sub M} = 2.29 {angstrom}{sup 3} Da{sup -1}), it was estimated that two molecules are present in the asymmetric unit.
Research Organization:
BROOKHAVEN NATIONAL LABORATORY (BNL)
Sponsoring Organization:
USDOE SC OFFICE OF BIOLOGICAL & ENVIRONMENTAL RESEARCH
DOE Contract Number:
AC02-98CH10886
OSTI ID:
1041627
Report Number(s):
BNL--96931-2012-JA; KP1605010
Journal Information:
Acta Crystallographica Section F: Structural Biology and Crystallization Communications, Journal Name: Acta Crystallographica Section F: Structural Biology and Crystallization Communications Journal Issue: 2 Vol. 68; ISSN 1744-3091
Country of Publication:
United States
Language:
English

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