Skip to main content
. Author manuscript; available in PMC: 2011 Apr 2.
Published in final edited form as: J Mol Biol. 2010 Feb 2;397(3):677–688. doi: 10.1016/j.jmb.2010.01.068

Figure 1.

Figure 1

(a) Base sequences of the DNA template strand and of the RNA transcript in tR2 transcription termination site from bacteriophage λ. The GC-rich sequence with inverted symmetry is boxed. The sequences corresponding to the A-rich tract are shown in bold. Transcription terminates at one of the two positions indicated by a “t”. The most frequent termination point is at the first of these positions.

(b) Base sequence and numbering of base pairs in the RNA-DNA hybrid investigated.

(c) The structures of GC and AU/T base pairs with the imino protons highlighted.