3H4C:
reference: Structure of the C-terminal domain of transcription factor IIB from Trypanosoma brucei., Ibrahim BS, Kanneganti N, Rieckhof GE, Das A, Laurents DV, Palenchar JB, Bellofatto V, Wah DA, Proc Natl Acad Sci U S A. 2009 Aug 11;106(32):13242-7. Epub 2009 Aug 3. PMID: 19666603

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