Abstract
Two recombinant proteins of the CTC family were prepared: the general stress protein CTC from Bacillus subtilis and its homolog from Aquifex aeolicus. The general stress protein CTC from B. subtilis forms a specific complex with 5S rRNA and its stable fragment of 60 nucleotides, which contains internal loop E. The ribosomal protein TL5 from Thermus thermophilus, which binds with high affinity to 5S rRNA in the loop E region, was also shown to replace the CTC protein from B. subtilis in its complexes with 5S rRNA and its fragment. The findings suggest that the protein CTC from B. subtilis binds to the same site on 5S rRNA as the protein TL5. The protein CTC from A. aeolicus, which is 50 amino acid residues shorter from the N-terminus than the proteins TL5 from T. thermophilus and CTC from B. subtilis, does not interact with 5S rRNA.
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Korepanov, A.P., Gongadze, G.M. & Garber, M.B. General Stress Protein CTC from Bacillus subtilis Specifically Binds to Ribosomal 5S RNA. Biochemistry (Moscow) 69, 607–611 (2004). https://doi.org/10.1023/B:BIRY.0000033733.60180.e3
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DOI: https://doi.org/10.1023/B:BIRY.0000033733.60180.e3