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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Curr Opin Biotechnol. 2012 Jan 7;23(4):503–509. doi: 10.1016/j.copbio.2011.12.023

Figure 2.

Figure 2

(A) Structure of the Phage T4 DNA packaging motor [28]. (B) Measuring single phi29 viral DNA packaging using optical tweezers [34,35]. (C) Average motor velocity vs. % of genome packaged at 5 pN load. (D) High-resolution measurements of DNA translocation, showing phi29 packaging occurs in bursts of four ~2.5 bp steps [43]. (E) Schematic model of motor subunit coordination [43].