| Literature DB >> 1850001 |
R A Pauptit1, H Zhang, G Rummel, T Schirmer, J N Jansonius, J P Rosenbusch.
Abstract
Trigonal crystals of the integral membrane protein porin from Escherichia coli have been grown and characterized. They belong to space group P321 with unit cell constants a = b = LL8.4, c = 52.7 A, alpha = beta = 90 degrees, gamma = 120 degrees. The crystals grow as well-defined hexagonal prisms to a size of 0.25 mm in all dimensions, and diffract to 2.7 A. The molecular symmetry coincides with 3-fold crystallographic symmetry, giving two trimers per unit cell (1 monomer/asymmetric unit). This corresponds to VM = 2.9 A3/Da. Native X-ray data to 3.0 A resolution have been collected on a FAST area detector and a search for heavy atom derivatives is underway.Entities:
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Year: 1991 PMID： 1850001 DOI： 10.1016/0022-2836(91)90696-4
Source DB: PubMed Journal: J Mol Biol ISSN： 0022-2836 Impact factor: 5.469