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Expression, Purification and Characterization of the BLM binding region of human Fanconi Anemia Group J Protein
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 Title & Authors
Expression, Purification and Characterization of the BLM binding region of human Fanconi Anemia Group J Protein
Yeom, Kyuho; Park, Chin-Ju;
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 Abstract
FANCJ is a DNA helicase which contributes genome stability by resolving G-quadruplex DNA from 5' to 3' direction. In addition to main ATPase helicase core, FANCJ has the protein binding region at its C-terminal part. BRCA1 and BLM are the binding partner of FANCJ and these protein-protein interactions contribute genomic stability and the proper response to replication stress. As the first attempt for studying FANCJ-BLM interaction, we prepared BLM binding region of FANCJ and characterized with CD and NMR spectroscopy. FANCJ (881-941) with N-ter 6xHis was purified as the oligomer. Secondary structure prediction based on CD data revealed that FANCJ (881-941) composed with sheet, turn and coils. HSQC spectra showed nonhomogeneous peak intensities with less number of peaks comparing than the number of amino acids in the construct. It indicated that optimization should be necessary for detailed further structural studies.
 Keywords
Helicase;Protein-Protein interaction;CD;NMR;
 Language
English
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