Table 1.

Components of the general Saccharomyces cerevisiae Pol III transcription machinery and their paralogs in Drosophila

Transcription factor/polymerase subunit	Orthologous and/or paralogous transcription factors
Saccharomyces cerevisiae	Drosophila	Vertebrates
TFIIIC:TFC7 (τ55)	XP_002134843 and XP_001360915 in Dpp.	TFIIIC35
XP_002021117 and XP_002017815 in Dp.
TFIIIB:BRF1	BRF1	BRF1, BRF2
TBP	TBP, TRF1, TRF2	TBP, TRF2, TRF3
Pol III:RPC31	RPC31	POLR3G, RPC32α
(NP_788522.1 in Dm)	POLR3GL, RPC32β

The Dpp and Dp proteins XP_001360915 and XP_002017815 are 98% identical and 99% homologous. The proteins XP_002134843 and XP_002021117 are identical. Dp, Drosophila persimilis; Dpp, Drosophila pseudoobscura pseudoobscura; Dm, Drosophila melanogaster and vertebrates.