期刊
ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS
卷 64, 期 -, 页码 1184-1187出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1744309108038724
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Sox17 is a member of the SRY-related high-mobility group (HMG) of transcription factors that have been shown to direct endodermal differentiation in early mammalian development. The LAMA1 gene encoding the alpha-chain of laminin-1 has been reported to be directly bound and regulated by Sox17. This paper describes the details of initial crystallization attempts with the HMG domain of mouse Sox17 (mSox17-HMG) with a 16-mer DNA element derived from the LAMA1 enhancer and optimization strategies to obtain a better diffracting crystal. The best diffracting crystal was obtained in a condition containing 0.1 M Tris-HCl pH 7.4, 0.2 M MgCl2, 30% PEG 3350 using the hanging-drop vapour-diffusion method. A highly redundant in-house data set was collected to 2.75 A resolution with 99% completeness. The presence of the mSox17-HMG-DNA complex within the crystals was confirmed and Matthews analysis indicated the presence of one complex per asymmetric unit.
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