Crystallization of the archaeal transcription termination factor NusA: a significant decrease in twinning under microgravity conditions.
Acta Crystallogr Sect F Struct Biol Cryst Commun 2007;
63:69-73. [PMID:
17277442 PMCID:
PMC2330117 DOI:
10.1107/s1744309106054625]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2006] [Accepted: 12/15/2006] [Indexed: 11/11/2022]
Abstract
The transcription termination factor NusA from Aeropyrum pernix was crystallized using a counter-diffusion technique in both terrestrial and microgravity environments. Crystallization under microgravity conditions significantly reduced the twinning content (1.0%) compared with terrestrially grown crystals (18.3%) and improved the maximum resolution from 3.0 to 2.29 A, with similar unit-cell parameters. Based on a comparison of the crystal parameters, the effect of microgravity on protein crystallization is discussed.
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