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. Author manuscript; available in PMC: 2018 May 3.
Published in final edited form as: Adv Exp Med Biol. 2012;726:549–584. doi: 10.1007/978-1-4614-0980-9_24

Figure 8.

Figure 8

Motor velocity and internal forces resisting DNA packaging. A) φ29 motor velocity vs. % of genome packaged (measured with 5 pN force feedback) in various ionic conditions (see legend). B) φ29 motor velocity vs. applied load force (measured at low capsid filling with no feedback). C) φ29 internal force vs. % of genome packaged deduced from the measurements in panels A&B. D) Internal force vs. % of genome packaged measured for phage λ in the absence of gpD (a putative capsid stabilizing protein). Proposed capsid expansion and capsid rupture events are marked by the dashed vertical lines.