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. 2009 Jun 10;37(14):4736–4742. doi: 10.1093/nar/gkp452

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© 2009 The Author(s)

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Different anti-terminator signal sequences. (A) rrnG leader sequence of E. coli. boxB, boxA and boxC refer to the λ-like anti-terminator (AT) features. Each box sequence is numbered separately; boxA and boxC are underlined. (B) Phage λ nut anti-termination sequence. λnutR and λnutL differ in the sequence and length of the spacer between boxA and boxB, as well as position 9 in the loop region of boxB. (C) Domain order of E. coli NusA. The numbers show the boarders of the six domains: N-terminal domain (NTD), S1 domain (S1), K-homologous domain (KH), acidic repeat (AR).