The concentration of salt in buffer A has been incorrectly documented in Materials and Methods, and the Results section. It should read as “buffer A (10 mM Tris–HCl (pH 8.0), 50 mM NaCl, 1 mM Na2EDTA)” and not “buffer A (10 mM Tris–HCl (pH 8.0), 100 mM NaCl, 1 mM Na2EDTA)”.
The authors would like to apologize for any inconvenience caused.
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