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Proc Natl Acad Sci U S A. 1994 Apr 26;91(9):3854-6.

The sequence, and its evolutionary implications, of a Thermococcus celer protein associated with transcription.

Author information

1
Department of Microbiology, University of Illinois, Urbana 61801.
2
U IL, Urbana

Abstract

Through random search, a gene from Thermococcus celer has been identified and sequenced that appears to encode a transcription-associated protein (110 amino acid residues). The sequence has clear homology to approximately the last half of an open reading frame reported previously for Sulfolobus acidocaldarius [Langer, D. & Zillig, W. (1993) Nucleic Acids Res. 21, 2251]. The protein translations of these two archaeal genes in turn are homologs of a small subunit found in eukaryotic RNA polymerase I (A12.2) and the counterpart of this from RNA polymerase II (B12.6). Homology is also seen with the eukaryotic transcription factor TFIIS, but it involves only the terminal 45 amino acids of the archaeal proteins. Evolutionary implications of these homologies are discussed.

PMID:
8171001
PMCID:
PMC43680
[Indexed for MEDLINE]
Free PMC Article

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