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Uploaded on Feb 16, 2012
When myomesin is pulled, as it is when muscles contract and extend, its helices (green) unfold. This strategy, discovered by scientists at EMBL Hamburg, enables the elastic part of this protein to stretch to two and a half times its original length. Published in PLoS Biology on 14 February 2012. More information: www.embl.org/press/2012/20120214_Hamburg.