2K3S:
reference: Solution structure of the calponin homology (CH)-domain from the smoothelin-like 1 protein: a unique Apo-calmodulin binding mode and the possible role of the C-terminal type 2 CH-domain in smooth muscle relaxation., Ishida H, Borman Meredith A, Ostrander J, Vogel Hans J, Macdonald Justin A, J Biol Chem. 2008 May 12;. PMID: 18477568

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