Specific binding of tRNAMet to 23S rRNA of Escherichia coli. | Zendy

J E Dahlberg | Zendy; Chris Kintner | Zendy; Elsebet Lund | Zendy

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Specific binding of tRNAMet to 23S rRNA of Escherichia coli.

Author(s) -

J E Dahlberg,

Chris Kintner,

Elsebet Lund

Publication year - 1978

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.011

H-Index - 771

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.75.3.1071

Subject(s) - 23s ribosomal rna , ribosome , ribosomal rna , transfer rna , escherichia coli , sequence (biology) , biology , nucleotide , p site , ribosomal protein , rna , genetics , microbiology and biotechnology , biochemistry , gene

tRNAMetf binds to 23S rRNA of Escherichia coli, forming a complex with a melting temperature of 75 degrees (in 0.6 M NaCl). The regions within the RNAs that bind to each other have been isolated and their nucleotide sequences have been determined. The interacting region in tRNAMetf is 17 nucleotides long, extending from G5 in the acceptor stem to D21 (D = 5.6-dihydrouridine) in the D loop. The sequence in 23S rRNA is complementary to that sequence except for an extra Up in the middle and allowing a Gp.D base pair. We propose that association of these two sequences may play a role in initiation of protein synthesis by tRNAMetf. In addition, part of this sequence in 23S rRNA may also stabilize tRNA binding to the ribosome during elongation of nascent polypeptides.

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