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Mol. Cell. Biol., Jul 1996, 3308-3316, Vol 16, No. 7
BR Cairns, NL Henry and RD Kornberg
The SWI1/ADR6, SWI2/SNF2, SWI3, SNF5, and SNF6 gene products are all
required for proper transcriptional control of many genes in the yeast
Saccharomyces cerevisiae. Genetic studies indicated that these gene
products might form a multiprotein SWI/SNF complex important for chromatin
transitions preceding transcription from RNA polymerase II promoters.
Biochemical studies identified a SWI/SNF complex containing these and at
least six additional polypeptides. Here we show that the 29-kDa component
of the SWI/SNF complex is identical to TFG3/TAF30/ANC1. Thus, a component
of the SWI/SNF complex is also a member of the TFIIF and TFIID
transcription complexes. TFG3 interacted with the SNF5 component of the
SWI/SNF complex in protein interaction blots. TFG3 is significantly similar
to ENL and AF-9, two proteins implicated in human acute leukemia. These
results suggest that ENL and AF-9 proteins interact with the SNF5 component
of the human SWI/SNF complex and raise the possibility that the SWI/SNF
complex is involved in acute leukemia.
Copyright © 1996, American Society for Microbiology
TFG/TAF30/ANC1, a component of the yeast SWI/SNF complex that is similar to the leukemogenic proteins ENL and AF-9
Department of Structural Biology, Stanford University School of Medicine, California 94305, USA.
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