Before revision:  Journal of Biological Chemistry 285(41) 31682-31693 (2010) and a helix-capping motif within this loop PLoS One 8 (5) e63047 (2013) .
After revision:  Journal of Biological Chemistry 285(41) 31682-31693 (2010) and a helix-capping motif (PNAS 107(46) 19808-19813 (2010); PLoS One 8 (5) e63047 (2013) .