期刊
ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS
卷 67, 期 -, 页码 536-540出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S174430911100786X
关键词
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资金
- Austrian Science Fund [F1722, F1720]
- Austrian Science Fund (FWF) [W1207] Funding Source: Austrian Science Fund (FWF)
The structure of full-length host factor Q beta (Hfq) from Escherichia coli obtained from a crystal belonging to space group P1, with unit-cell parameters a = 61.91, b = 62.15, c = 81.26 angstrom, alpha = 78.6, beta = 86.2, gamma = 59.9 degrees, was solved by molecular replacement to a resolution of 2.85 angstrom and refined to R-work and R-free values of 20.7% and 25.0%, respectively. Hfq from E. coli has previously been crystallized and the structure has been solved for the N-terminal 72 amino acids, which cover similar to 65% of the full-length sequence. Here, the purification, crystallization and structural data of the full 102-amino-acid protein are presented. These data revealed that the presence of the C-terminus changes the crystal packing of E. coli Hfq. The crystal structure is discussed in the context of the recently published solution structure of Hfq from E. coli.
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