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Reference: Aravind L and Ponting CP (1998) Homologues of 26S proteasome subunits are regulators of transcription and translation. Protein Sci 7(5):1250-4

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Abstract

Single copies of an alpha-helical-rich motif are demonstrated to be present within subunits of the large multiprotein 26S proteasome and eukaryotic initiation factor-3 (eIF3) complexes, and within proteins involved in transcriptional regulation. In addition, p40 and p47 subunits of eIF3 are shown to be homologues of the proteasome subunit Mov34, and transcriptional regulators JAB1/pad1. Finally, the proteasome subunit S5a and the p44 subunit of the basal transcription factor IIH (TFIIH) are identified as homologues. The presence of homologous, and sometimes identical, proteins in contrasting functional contexts suggests that the large multisubunit complexes of the 26S proteasome, eIF3 and TFIIH perform overlapping cellular roles.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Aravind L, Ponting CP
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