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. 2010 Aug 26;2(9):1821–1843. doi: 10.3390/v2091821

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© 2010 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 3. — A transverse section-based representation of the firing of the connector subunits. A coiled peptide segment and a dark sphere represent an activated connector subunit. An uncoiled peptide segment and a light sphere represent a completely deactivated connector subunit. The DNA molecule is in the middle. This representation of the connector is a section with some details missing and modified to avoid confusion. Specifically, the clip and crown are, together, represented by one circle and only one peptide segment is shown; the subunits are not in contact. (a) The motor is shown at the end of a dwell with all 12 subunits activated. The motor is shown at the end of the (b) first, (c) second, (d) third and (e) fourth mini-bursts. (f) The motor is shown during a stalled mini-burst. (g) The motor is shown after an activation of the mobile peptide segments that began after a stalled mini-burst.